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1.
Arthroplast Today ; 25: 101303, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38313190

RESUMEN

Background: Most studies evaluating robotic-assisted total knee arthroplasty (RA TKA) analyzed the advantages offered to high-volume surgeons. This study aims to determine if RA TKA improves radiographic or clinical outcomes for low-volume, non-arthroplasty-trained surgeons. Methods: Radiographic and early clinical outcomes of 19 RA TKAs and 41 conventional TKAs, all performed by a single, non-arthroplasty-trained orthopaedic surgeon, were compared. Radiographic outliers were based on surgeon targets and defined as tibial posterior slope outside of 0°-5°, tibial tray varus outside of 0°-3°, and the presence of notching. Clinical outcomes included inpatient narcotic usage, length of stay, range of motion, and Patient-Reported Outcome Measurement Information System scores. Results: There was a significant decrease in tibial slope outliers (RA TKA 0% vs non-RA TKA 22%, P = .024) and notching incidence (RA TKA 0% vs non-RA TKA 19.5%, P = .044) in the RA group. Tibial tray varus/valgus outliers trended lower in the RA TKA group (10.0% vs 26.8%, P = .189). Length of stay was significantly shorter in RA patients (48.0 hours [standard deviation: 25.5] vs 67.7 hours [34.3], P = .038). RA patients trended toward lower in postoperative inpatient total mean morphine equivalents usage (79.9 [89.2] vs 140.1 [169.3], P = .142) and inpatient mean morphine equivalents usage per day (30.36 [26.9] vs 45.6 [36.7], P = .105). There was no significant difference in Patient-Reported Outcome Measurement Information System scores or range of motion at first and second postoperative follow-up within 3 months. Conclusions: RA TKA reduced the incidence of radiographic outliers when compared to conventional TKA for a low-volume arthroplasty surgeon.

2.
Eur J Orthop Surg Traumatol ; 34(2): 927-955, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37776392

RESUMEN

PURPOSE: The integration of artificial intelligence (AI) tools, such as ChatGPT, in clinical medicine and medical education has gained significant attention due to their potential to support decision-making and improve patient care. However, there is a need to evaluate the benefits and limitations of these tools in specific clinical scenarios. METHODS: This study used a case study approach within the field of orthopaedic surgery. A clinical case report featuring a 53-year-old male with a femoral neck fracture was used as the basis for evaluation. ChatGPT, a large language model, was asked to respond to clinical questions related to the case. The responses generated by ChatGPT were evaluated qualitatively, considering their relevance, justification, and alignment with the responses of real clinicians. Alternative dialogue protocols were also employed to assess the impact of additional prompts and contextual information on ChatGPT responses. RESULTS: ChatGPT generally provided clinically appropriate responses to the questions posed in the clinical case report. However, the level of justification and explanation varied across the generated responses. Occasionally, clinically inappropriate responses and inconsistencies were observed in the generated responses across different dialogue protocols and on separate days. CONCLUSIONS: The findings of this study highlight both the potential and limitations of using ChatGPT in clinical practice. While ChatGPT demonstrated the ability to provide relevant clinical information, the lack of consistent justification and occasional clinically inappropriate responses raise concerns about its reliability. These results underscore the importance of careful consideration and validation when using AI tools in healthcare. Further research and clinician training are necessary to effectively integrate AI tools like ChatGPT, ensuring their safe and reliable use in clinical decision-making.


Asunto(s)
Fracturas del Cuello Femoral , Procedimientos Ortopédicos , Masculino , Humanos , Persona de Mediana Edad , Inteligencia Artificial , Reproducibilidad de los Resultados , Fracturas del Cuello Femoral/cirugía , Toma de Decisiones Clínicas
3.
OTA Int ; 6(5 Suppl): e292, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-38152435

RESUMEN

Objectives: Geriatric patients who sustain hip fractures and are taking factor Xa inhibitors (Xa-I) experience surgical delay. Our institution developed a pharmacokinetic protocol to formally guide and expedite surgical timing for these patients. The protocol is based on the patient's renal function and timing of last Xa-I dose. For patients with impaired renal function, longer wait times are recommended. The purpose of this study was to determine the effects of this protocol for patients with geriatric hip fracture taking Xa-I. Design: Retrospective cohort study. Setting: Level 1 trauma center. Patients/Participants: A total of 164 patients aged 65 and older who were taking Xa-I before admission and underwent hip fracture surgery; 68 patients in the Standard group (2014-2018) and 96 patients in the Expedited group (2020-2022, after protocol implementation). Intervention: Hip fracture surgery. Main Outcome Measurements: Time to surgery (TTS), transfusion rate, blood loss, 90-day complication rates. Results: The median TTS was significantly shorter in the Expedited group (28.6 hours, interquartile range 21.3 hours) than in the Standard group (44.8 hours, interquartile range 21.1 hours) (P < .001). There were no differences in overall transfusion rates. Multivariable regression analysis demonstrated that time to surgery was not predictive of transfusion rate in all patients (OR 1.00, 95% CI 0.99-1.02, P = .652). There were no differences in blood loss or rates of 90-day complications. Conclusion: Geriatric patients with hip fractures and taking factor Xa inhibitors may warrant earlier surgery without an increased risk of transfusion or bleeding. Level of Evidence: Therapeutic Level III.

4.
J Surg Orthop Adv ; 32(2): 107-110, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37668647

RESUMEN

This study sought to quantify the rate of culture-positive drape contamination with varying degrees of drape manipulation for intra-operative fluoroscopic imaging. In this prospective cohort study, 30 patients with operatively closed lower extremity fractures were evaluated. The clip-drape technique was employed to cover the emitter. Swab samples were collected for bacterial growth. A t-test was applied for statistical comparison. Three of 30 cases (10% of operations) showed evidence of contamination. There was no statistically significant difference between duration of drape use or the amount of drape manipulations. None of the 30 patients in this study developed surgical site infection 90-days post-surgery. The clip drape technique for lateral fluoroscopy appears to be effective in maintaining surgical field sterility. Moreover, the number of drape manipulations and length of time the drape was in use was not related to drape contamination. Level of Evidence: Therapeutic Level II. (Journal of Surgical Orthopaedic Advances 32(2):107-110, 2023).


Asunto(s)
Fracturas Óseas , Ortopedia , Humanos , Estudios Prospectivos , Fluoroscopía , Infección de la Herida Quirúrgica/epidemiología , Infección de la Herida Quirúrgica/prevención & control
5.
Orthopedics ; 45(3): 174-180, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35112967

RESUMEN

This study examined the correlation between preoperative transcutaneous oxygen perfusion (TcPO2) measurement and the success of wound healing after major lower extremity amputation. There is no validated consensus on how to accurately determine appropriate amputation levels. A TcPO2 greater than 30 to 40 mm Hg is widely cited as a positive predictor of postoperative wound healing, but its validity has not been well defined. A retrospective chart review was performed for patients who underwent above-knee amputation (AKA), through-knee amputation, or below-knee amputation (BKA) at a single institution from 2012 to 2018 with preoperative TcPO2 values and a minimum 30-day postoperative clinical follow-up. This review yielded 141 total amputations: 93 BKAs, 6 through-knee amputations, and 42 AKAs. Fifty-five amputations were unsuccessful, defined by postoperative wound dehiscence or infection. Of these, 37 were BKAs, 4 were through-knee amputations, and 14 were AKAs. There was a significant difference in preoperative TcPO2 between the successful and unsuccessful amputations, at 46.2 and 38.3 mm Hg, respectively (P=.02). A TcPO2 of 30 to 40 mm Hg showed a 68.8% success rate, and a TcPO2 of less than 20 mm Hg showed an 18.2% success rate. A receiver operating characteristic curve for TcPO2 predicting amputation success had an area under the curve of 0.53 for AKAs and 0.61 for BKAs; the diagnostic ability is far from prognostic. There is no linear association between TcPO2 and success rate. A TcPO2 of less than 20 mm Hg has a high positive predictive value for failure, but higher levels are not 100% predictive of wound healing success after amputation, as previously reported. [Orthopedics. 2022;45(3):174-180.].


Asunto(s)
Amputación Quirúrgica , Pierna , Humanos , Extremidad Inferior/cirugía , Oxígeno , Perfusión , Estudios Retrospectivos , Cicatrización de Heridas
6.
Orthopedics ; 44(4): 223-228, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34292806

RESUMEN

Geriatric hip fractures benefit from timely surgery. At the onset of the corona-virus disease 2019 (COVID-19) pandemic, shelter-in-place (SIP) orders were mandated in high-risk cities. The authors hypothesized that geriatric patients with hip fractures were more likely to present to the hospital greater than 24 hours after injury during SIP orders. They retrospectively reviewed patients 65 years or older who presented with hip fractures between March 20, 2020, and May 24, 2020 (SIP group), and between March 20, 2019, and May 24, 2019 (historical group). Primary outcomes were incidence of presentation greater than 24 hours after injury and mean number of days between injury and presentation. Secondary outcomes were incidence of preoperative deep venous thrombosis (DVT) and 30- and 90-day mortality rates. Thirty-three patients comprised the SIP group, and 50 patients comprised the historical group. There were no significant differences in their demographics or medical comorbidities. The SIP group was more likely to present greater than 24 hours after injury (P=.05) and presented a greater number of days after injury (P=.02). There was a significant difference in the incidence of preoperative DVT (P=.03). There were no significant differences in 30- and 90-day mortality rates. Geriatric patients who sustained hip fractures during SIP restrictions for COVID-19 were more likely to present greater than 24 hours after injury, have a greater number of days between injury and presentation, and be diagnosed with a preoperative DVT. [Orthopedics. 2021;44(4):223-228.].


Asunto(s)
COVID-19 , Fracturas de Cadera , Trombosis de la Vena , Anciano , Diagnóstico Tardío , Fracturas de Cadera/cirugía , Humanos , Cuarentena , Estudios Retrospectivos , SARS-CoV-2 , Trombosis de la Vena/diagnóstico
7.
J Alzheimers Dis ; 77(2): 459-504, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32925078

RESUMEN

COVID-19 is a severe infectious disease that has claimed >150,000 lives and infected millions in the United States thus far, especially the elderly population. Emerging evidence has shown the virus to cause hemorrhagic and immunologic responses, which impact all organs, including lungs, kidneys, and the brain, as well as extremities. SARS-CoV-2 also affects patients', families', and society's mental health at large. There is growing evidence of re-infection in some patients. The goal of this paper is to provide a comprehensive review of SARS-CoV-2-induced disease, its mechanism of infection, diagnostics, therapeutics, and treatment strategies, while also focusing on less attended aspects by previous studies, including nutritional support, psychological, and rehabilitation of the pandemic and its management. We performed a systematic review of >1,000 articles and included 425 references from online databases, including, PubMed, Google Scholar, and California Baptist University's library. COVID-19 patients go through acute respiratory distress syndrome, cytokine storm, acute hypercoagulable state, and autonomic dysfunction, which must be managed by a multidisciplinary team including nursing, nutrition, and rehabilitation. The elderly population and those who are suffering from Alzheimer's disease and dementia related illnesses seem to be at the higher risk. There are 28 vaccines under development, and new treatment strategies/protocols are being investigated. The future management for COVID-19 should include B-cell and T-cell immunotherapy in combination with emerging prophylaxis. The mental health and illness aspect of COVID-19 are among the most important side effects of this pandemic which requires a national plan for prevention, diagnosis and treatment.


Asunto(s)
Infecciones por Coronavirus , Pandemias , Neumonía Viral , COVID-19 , Infecciones por Coronavirus/diagnóstico , Infecciones por Coronavirus/tratamiento farmacológico , Infecciones por Coronavirus/epidemiología , Infecciones por Coronavirus/psicología , Infecciones por Coronavirus/terapia , Humanos , Inmunoterapia , Salud Mental , Apoyo Nutricional , Neumonía Viral/diagnóstico , Neumonía Viral/epidemiología , Neumonía Viral/psicología , Neumonía Viral/terapia , Tratamiento Farmacológico de COVID-19
8.
J Orthop Trauma ; 34(9): 469-475, 2020 09.
Artículo en Inglés | MEDLINE | ID: mdl-32815833

RESUMEN

OBJECTIVES: Perioperative fascia iliaca regional anesthesia (FIRA) decreases pain in hip fracture patients. The purpose of this study is to determine which hip fracture types and surgical procedures benefit most. DESIGN: Prospective observational study compared with a retrospective historical control. PATIENTS/PARTICIPANTS: Patients older than 60 years who received perioperative FIRA were compared with a historical cohort not receiving FIRA. SETTING: This study was conducted at a Level 1 trauma center. MAIN OUTCOME MEASUREMENTS: The primary outcome was morphine milliequivalents (MME) consumed during the index hospitalization. Fracture pattern-specific preoperative and postoperative MME consumption and surgical procedure-specific postoperative MME consumption was compared between the FIRA and non-FIRA groups. RESULTS: A total of 949 patients were included in this study, with 194 (20.4%) patients in the prospective protocol group. There were no baseline differences between cohorts. Preoperatively, only femoral neck fracture patients receiving FIRA used fewer MME (P < 0.001). Postoperatively, femoral neck fracture patients receiving FIRA used fewer MME on postoperative day (POD) 1 (P = 0.027) and intertrochanteric fracture patients used fewer MME on POD1 and POD2 (P = 0.013; P = 0.002). Cephalomedullary nail patients receiving FIRA used fewer MME on POD1 and POD2 (P = 0.004; P = 0.003). Hip arthroplasty patients receiving FIRA used fewer MME on POD1 (P = 0.037). Percutaneous pinning and sliding hip screw patients had no significant MME reduction from FIRA. CONCLUSIONS: Preoperatively, patients with femoral neck fractures benefit most from FIRA. Postoperatively, both patients with femoral neck fractures and intertrochanteric fractures benefit from FIRA. Patients undergoing cephalomedullary nail fixation or hip arthroplasty benefit most from FIRA postoperatively. LEVEL OF EVIDENCE: Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.


Asunto(s)
Anestesia de Conducción , Fracturas de Cadera , Fascia , Fracturas de Cadera/cirugía , Humanos , Estudios Prospectivos , Estudios Retrospectivos , Resultado del Tratamiento
9.
J Am Geriatr Soc ; 68(9): 2043-2050, 2020 09.
Artículo en Inglés | MEDLINE | ID: mdl-32442348

RESUMEN

BACKGROUND: Geriatric hip fracture patients are susceptible to the adverse effects of opioid-induced analgesia. Fascia iliaca blocks (FIBs) have emerged as an analgesic technique for this population. There are limited data on a preoperative FIB's effect on perioperative opioid intake. We hypothesized that preoperative FIB would reduce perioperative opioid consumption, measured in morphine milliequivalents (MMEs). DESIGN: This is a prospective observational study. SETTING: A level 1 trauma center in California. PARTICIPANTS: From March 2017 to December 2017, patients 65 years and older presenting with a hip fracture received a preoperative FIB and were prospectively observed. This cohort was compared with a historical control. INTERVENTION: All prospectively enrolled patients were given FIBs. For a single-shot FIB, a 30- to 40-mL bolus of 0.25% bupivacaine with 1:200,000 epinephrine was injected. For a continuous FIB, a bolus of 10 to 20 mL of 0.2% bupivacaine was injected, followed by a continuous infusion of 0.2% bupivacaine at 6 mL/h ending on the morning of postoperative Day 1. RESULTS: A total of 725 patients were included in this study, with 92 in the prospectively collected cohort. The mean age of this cohort was 84.2 (standard deviation = 8.4) years, and 69.2% were female. Patients who received a preoperative FIB consumed less MME preoperatively, 18.0 (interquartile range = 6.0-44.5) versus 29.5 (interquartile range = 6.0-56.5) (P = .007), with no change in pain scores. No differences were found in postoperative opioid consumption between groups. There was no difference in MME or pain score in patients with dementia. Subgroup analysis based on fracture pattern (femoral neck and intertrochanteric) demonstrated a significant decrease in preoperative MME consumption in femoral neck fractures only, 12.0 (interquartile range = 5.0-24.0) versus 29.0 (interquartile range = 12.0-59.0) (P < .001). CONCLUSION: FIBs reduce preoperative opioid intake and have low rates of opioid-related adverse events in geriatric hip fracture patients. LEVEL OF EVIDENCE: The level of evidence was II.


Asunto(s)
Analgésicos Opioides/uso terapéutico , Fracturas de Cadera/cirugía , Bloqueo Nervioso , Manejo del Dolor , Dolor Postoperatorio/tratamiento farmacológico , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Estudios Prospectivos
10.
Injury ; 51(6): 1337-1342, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32327234

RESUMEN

BACKGROUND: Fascia iliaca nerve blocks relieve pain in geriatric hip fracture patients and can be administered via a single-shot or continuous catheter. We compared perioperative opioid consumption and pain scores between these two blocks. METHODS: We performed a prospective, observational cohort study, including geriatric hip fracture patients who received a preoperative block. We compared morphine milligram equivalent (MME) consumption and visual analog scale (VAS) pain scores between single-shot and continuous fascia iliaca blocks at multiple time points: preoperative and on postoperative (POD) day 0, 1, and 2. We compared the change in preoperative total and hourly opioid consumption before and after block placement within and between groups. Secondary outcomes included opioid related adverse events, length of stay, and readmission rates. RESULTS: 107 patients were analyzed, 66 received a single-shot and 41 a continuous block. No significant differences were found between both blocks at any time point for median MME consumption or pain scores. MME [IQR]: preoperative 20.5 [6.0,48.8] vs. 24.0 [8.8,48.0], p=0.95; POD0 6.0 [0.0,18.6] vs. 10.0 [0.0,14.0], p=0.52; POD1 12.0 [0.0,30.0] vs. 18.0 [5.0,24.0], p=0.69; POD2 6.0 [0.0,21.2] vs. 12.0 [0.0,24.0], p=0.54. VAS [IQR]: preoperative 4.0 [2.2,5.3] vs. 4.6 [3.2,5.3], p=0.34; POD0 1.3 [0.0,3.7] vs. 2.5 [0.0,3.6], p=0.73; POD1 2.9 [1.7,4.4] vs. 3.7 [1.5,4.7], p=0.59; POD2 2.4 [1.0,4.4] vs. 3.3 [1.9,4.2], p=0.18. Preoperative MME/hr significantly decreased after the block for both groups: 1.05 [0.0,2.2] to 0.0 [0.0,0.0], p < 0.001; 1.4 [0.6,3.1] to 0.0 [0.0,0.1], p < 0.001. The reduction in MME/hr between groups was not significantly different: 0.9 [0.0,1.9] vs. 1.4 [0.6,3.1], p = 0.067. We found no significant differences in secondary outcomes between groups. CONCLUSIONS: We report no differences in opioid use and pain scores between single-shot and continuous catheter fascia iliaca nerve blocks. Both blocks similarly reduce preoperative opioid consumption.


Asunto(s)
Anestesia de Conducción/métodos , Fracturas de Cadera/cirugía , Bloqueo Nervioso/métodos , Manejo del Dolor/métodos , Anciano , Anciano de 80 o más Años , Analgésicos Opioides/uso terapéutico , Femenino , Humanos , Masculino , Dimensión del Dolor , Dolor Postoperatorio/tratamiento farmacológico , Estudios Prospectivos , Ultrasonografía Intervencional
11.
J Bone Joint Surg Am ; 102(10): 866-872, 2020 May 20.
Artículo en Inglés | MEDLINE | ID: mdl-32195685

RESUMEN

BACKGROUND: Fascia iliaca nerve blocks (FIBs) anesthetize the thigh and provide opioid-sparing analgesia for geriatric patients with hip fracture awaiting a surgical procedure. FIBs are recommended for preoperative pain management; yet, block administration is often delayed for hours after admission, and delays in pain management lead to worse outcomes. Our objective was to determine whether opioid consumption and pain following a hip fracture are affected by the time to block (TTB). We also examined length of stay and opioid-related adverse events. METHODS: This prospective cohort study included patients who were ≥60 years of age, presented with a hip fracture, and received a preoperative FIB from March 2017 to December 2017. Individualized care timelines, including the date and time of admission, block placement, and surgical procedure, were created to evaluate the effect that TTB and time to surgery (TTS) had on outcomes. Patterns among TTB, TTS, and morphine milligram equivalents (MME) were investigated using the Spearman rho correlation. For descriptive purposes, we divided patients into 2 groups based on the median TTB. Multivariable regression for preoperative MME and length of stay was performed to assess the effect of TTB. RESULTS: There were 107 patients, with a mean age of 83.3 years, who received a preoperative FIB. The median TTB was 8.5 hours. Seventy-two percent of preoperative MME consumption occurred before block placement (pre-block MME). A longer TTB was most strongly correlated with pre-block MME (rho = 0.54; p < 0.001), and TTS was not correlated. Patients with a faster TTB consumed fewer opioids preoperatively (12.0 compared with 33.1 MME; p = 0.015), had lower visual analog scale scores for pain on postoperative day 1 (2.8 compared with 3.5 points; p = 0.046), and were discharged earlier (4.0 compared with 5.5 days; p = 0.039). There were no differences in preoperative pain scores, postoperative opioid consumption, delirium, or opioid-related adverse events. Multivariate regression showed that every hour of delay in TTB was associated with a 2.8% increase in preoperative MME and a 1.0% increase in the length of stay. CONCLUSIONS: Faster TTB in geriatric patients with hip fracture may reduce opioid use, pain, and length of stay. LEVEL OF EVIDENCE: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.


Asunto(s)
Anestesia de Conducción/métodos , Fracturas de Cadera/cirugía , Bloqueo Nervioso/métodos , Manejo del Dolor/métodos , Anciano , Anciano de 80 o más Años , Analgésicos Opioides/uso terapéutico , Femenino , Humanos , Masculino , Persona de Mediana Edad , Dimensión del Dolor , Dolor Postoperatorio/tratamiento farmacológico , Estudios Prospectivos , Ultrasonografía Intervencional
12.
Patient Educ Couns ; 103(6): 1209-1215, 2020 06.
Artículo en Inglés | MEDLINE | ID: mdl-32035739

RESUMEN

OBJECTIVE: Evaluate the effectiveness of home talks (HTs), a novel model of health education delivered by village health workers (VHWs) with primary-level education to rural African mothers. Talk recipients were assessed by health census to be at risk for ill-health in one of 5 ways: malnutrition, diarrhea, respiratory disease, HIV, and poverty due to family size. METHODS: Each participant received a pre-test, immediate post-test and delayed post-test on their assigned HT topic and a pre-test and delayed post-test on a randomly assigned control topic. Differences in scoring were examined against controls and over time using paired t-tests and general linear regression analysis, respectively. RESULTS: Subjects lost knowledge gained from the HTs over time, but what they retained at 3 months was far greater than what they learned about the control topics (p-values <0.0001), independent of subjects' educational level. CONCLUSION: Targeted HTs to people with health census-identified risk factors resulted in learning and significant retention of knowledge. PRACTICE IMPLICATIONS: Positive behavioral change resulting from health education has been shown in diverse contexts. This personal model of home talk education by VHWs targeting vulnerable families is flexible and effective and may be used to improve community health in other impoverished settings worldwide.


Asunto(s)
Agentes Comunitarios de Salud , Educación en Salud , Madres/educación , Población Rural , Femenino , Humanos , Pobreza , Prevención Primaria , Uganda
13.
JBJS Case Connect ; 9(4): e0441, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-31834018

RESUMEN

CASE: A 72-year-old man presented 20 years after a Morel-Lavallée (ML) lesion with pain and drainage. Biopsies of the lesion and lymph nodes were positive for squamous cell carcinoma (SCC). There was no cutaneous involvement or distant metastasis. After chemotherapy and radiation, he underwent resection of the lesion and lymph nodes with flap closure. Two months postoperatively, he unfortunately developed malignant pleural effusions, hypercalcemia, and kidney injury and was eventually transferred to hospice care and died. CONCLUSION: This is the first report of SCC arising from a ML lesion. Chronic ML lesions should be treated aggressively and monitored for transformation into malignancy, even without cutaneous involvement.


Asunto(s)
Carcinoma de Células Escamosas/etiología , Lesiones por Desenguantamiento/complicaciones , Complicaciones Posoperatorias/etiología , Neoplasias de los Tejidos Blandos/etiología , Anciano , Carcinoma de Células Escamosas/patología , Carcinoma de Células Escamosas/terapia , Resultado Fatal , Cadera/patología , Humanos , Metástasis Linfática , Masculino , Complicaciones Posoperatorias/patología , Complicaciones Posoperatorias/terapia , Neoplasias de los Tejidos Blandos/patología , Neoplasias de los Tejidos Blandos/terapia
14.
J Orthop Trauma ; 33 Suppl 1: S38-S39, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-31290833

RESUMEN

Ankle malunions with a shortened fibula and syndesmosis widening can pose challenges to the patient and treating physician. Indications for revision-operative intervention include persistent pain and disability. Shortened fibula malunions can be addressed using a lengthening fibular osteotomy and revision fixation. Chronic syndesmotic injuries can be addressed with syndesmotic debridement, open reduction, and suture button fixation. In this video, we present our surgical technique and rationale for the management of a shortened fibular malunion with persistent syndesmotic widening.


Asunto(s)
Fracturas de Tobillo/cirugía , Traumatismos del Tobillo/cirugía , Articulación del Tobillo/cirugía , Tornillos Óseos , Fijación Interna de Fracturas/métodos , Fracturas Mal Unidas/cirugía , Osteotomía/métodos , Fracturas de Tobillo/diagnóstico , Traumatismos del Tobillo/diagnóstico , Articulación del Tobillo/diagnóstico por imagen , Peroné , Fracturas Mal Unidas/diagnóstico , Humanos , Masculino , Técnicas de Sutura , Tomografía Computarizada por Rayos X , Adulto Joven
15.
Artículo en Inglés | MEDLINE | ID: mdl-30075035

RESUMEN

The traditional technique for patella fracture fixation utilizes prominent hardware. Prominent hardware use, however, results in a high rate of reoperation for symptomatic implant removal. This biomechanical study evaluates the effectiveness of a novel patella fixation technique that minimizes implant prominence. Patellar transverse osteotomies were created in 13 pairs of cadaveric knees. Paired knees were assigned to either standard fixation (SF) using cannulated partially threaded screws and stainless steel wire tension band, or buried fixation (BF) using headless compression screws with a No. 2 FiberWire tension band and a No. 5 FiberWire cerclage suture. Quadriceps tendons were cyclically loaded to full extension followed by load to failure. The gap across the fracture site, stiffness, and load to failure were measured. The differences in stiffness and load to failure between the 2 groups were not statistically significant. During cyclic loading, significantly greater gapping was observed across the fracture site in the BF group compared with SF group (P < .05). Both constructs failed under loads that exceeded typical loads experienced during the postoperative rehabilitation period. Nevertheless, the BF technique demonstrated larger gap formation and a reduced load to failure than the SF technique. Further clinical studies are therefore underway to determine whether the use of constructs with decreased stability but increased patient comfort could improve clinical outcomes and reduce reoperation rates.


Asunto(s)
Tornillos Óseos , Fijación Interna de Fracturas/métodos , Fracturas Óseas/cirugía , Rótula/lesiones , Fenómenos Biomecánicos , Humanos , Rótula/cirugía
16.
Neuropharmacology ; 128: 324-339, 2018 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-29074304

RESUMEN

γ-aminobutyric acid (GABA) begins as the key excitatory neurotransmitter in newly forming circuits, with chloride efflux from GABA type A receptors (GABAARs) producing membrane depolarization, which promotes calcium entry, dendritic outgrowth and synaptogenesis. As development proceeds, GABAergic signaling switches to inhibitory hyperpolarizing neurotransmission. Despite the evidence of impaired GABAergic neurotransmission in neurodevelopmental disorders, little is understood on how agonist-dependent GABAAR activation controls the formation and plasticity of GABAergic synapses. We have identified a weakly depolarizing and inhibitory GABAAR response in cortical neurons that occurs during the transition period from GABAAR depolarizing excitation to hyperpolarizing inhibitory activity. We show here that treatment with the GABAAR agonist muscimol mediates structural changes that diminish GABAergic synapse strength through postsynaptic and presynaptic plasticity via intracellular Ca2+ stores, ERK and BDNF/TrkB signaling. Muscimol decreases synaptic localization of surface γ2 GABAARs and gephyrin postsynaptic scaffold while ß2/3 non-γ2 GABAARs accumulate in the synapse. Concurrent with this structural plasticity, muscimol treatment decreases synaptic currents while enhancing the γ2 containing benzodiazepine sensitive GABAAR tonic current in an ERK dependent manner. We further demonstrate that GABAAR activation leads to a decrease in presynaptic GAD65 levels via BDNF/TrkB signaling. Together these data reveal a novel mechanism for agonist induced GABAergic synapse plasticity that can occur on the timescale of minutes, contributing to rapid modification of synaptic and circuit function.


Asunto(s)
Factor Neurotrófico Derivado del Encéfalo/metabolismo , Quinasas MAP Reguladas por Señal Extracelular/metabolismo , Plasticidad Neuronal/fisiología , Receptores de GABA-A/metabolismo , Sinapsis/fisiología , Animales , Azepinas/farmacología , Benzamidas/farmacología , Butadienos/farmacología , Bloqueadores de los Canales de Calcio/farmacología , Corteza Cerebral/citología , Embrión de Mamíferos , Inhibidores Enzimáticos/farmacología , Fármacos actuantes sobre Aminoácidos Excitadores/farmacología , GABAérgicos/farmacología , Glutamato Descarboxilasa/metabolismo , Ácido Glutámico/farmacología , Muscimol/farmacología , Plasticidad Neuronal/efectos de los fármacos , Neuronas/efectos de los fármacos , Nimodipina/farmacología , Nitrilos/farmacología , Técnicas de Placa-Clamp , Ratas , Sinapsis/efectos de los fármacos
17.
J Bone Joint Surg Am ; 99(22): 1932-1940, 2017 Nov 15.
Artículo en Inglés | MEDLINE | ID: mdl-29135667

RESUMEN

BACKGROUND: Geriatric femoral neck fractures are associated with substantial morbidity and medical cost. We evaluated the incidence and management trends of femoral neck fractures in recent years in the U.S. METHODS: Patient data from 2003 through 2013 were obtained from the Nationwide Inpatient Sample database. Femoral neck fractures in patients ≥65 years old were identified and grouped using the International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) procedure codes for internal fixation, hemiarthroplasty, or total hip arthroplasty (THA). The nationwide incidence of femoral neck fractures was calculated and presented as an age-adjusted population rate. Univariable methods were used for trend analysis and comparisons between groups. Logistic regression modeling was used to analyze complications. RESULTS: From 2003 to 2013, we identified 808,940 femoral neck fractures in patients ≥65 years old. The national age-adjusted incidence of femoral neck fractures decreased from 242 per 100,000 U.S. adults in 2003 to 146 in 2013. The proportion of fractures managed operatively with THA increased over time (5.9% in 2003 versus 7.4% in 2013; p < 0.001). Concurrently, the use of hemiarthroplasty declined (65.1% versus 63.6%; p < 0.001). In 2013, the median age of the patients treated with THA was significantly younger (77.3 years) compared with that in the hemiarthroplasty and internal fixation groups (83.2 and 82.0 years). The THA group had significantly higher median initial hospital costs ($17,097) compared with the hemiarthroplasty and internal fixation groups ($14,776 and $10,462). CONCLUSIONS: In the last decade, the total number and population rate of femoral neck fractures in the elderly declined significantly. There was a modest but significant increase in the utilization of THA. CLINICAL RELEVANCE: This report identifies the changing trends in clinical practice in the treatment of geriatric femoral neck fractures in the U.S. Treating physicians should be aware of these trends, which include a decreasing national incidence of geriatric femoral neck fractures as well as an increase in the use of THA.


Asunto(s)
Artroplastia de Reemplazo de Cadera/estadística & datos numéricos , Fracturas del Cuello Femoral/epidemiología , Fijación Interna de Fracturas/estadística & datos numéricos , Hemiartroplastia/estadística & datos numéricos , Pautas de la Práctica en Medicina/tendencias , Factores de Edad , Anciano , Anciano de 80 o más Años , Artroplastia de Reemplazo de Cadera/tendencias , Bases de Datos Factuales , Femenino , Fracturas del Cuello Femoral/cirugía , Fijación Interna de Fracturas/tendencias , Hemiartroplastia/tendencias , Humanos , Incidencia , Modelos Logísticos , Masculino , Complicaciones Posoperatorias/epidemiología , Pautas de la Práctica en Medicina/estadística & datos numéricos , Estudios Retrospectivos , Estados Unidos/epidemiología
18.
Orthopedics ; 40(6): e982-e989, 2017 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-28968474

RESUMEN

This study described surgical treatment patterns for proximal humerus fractures among elderly patients, focusing on reverse total shoulder arthroplasty (TSA), and evaluated how the type of fixation affects inpatient factors (cost, length of stay), transfusion rates, and patient disposition (home vs skilled nursing facility). With Nationwide Inpatient Sample data from 2011 to 2013, the authors identified patients 65 years and older who had proximal humerus fractures and divided them into 3 groups: (1) open reduction and internal fixation (ORIF); (2) hemiarthroplasty; and (3) reverse TSA. From 2011 to 2013, 38,729 surgically treated proximal humerus fractures were identified. The rate of reverse TSA increased 1.8-fold during this time, from 13% of operative cases in 2011 to 24% of operative cases in 2013 (P<.001). At the same time, the rates of hemiarthroplasty and ORIF decreased (hemiarthroplasty, from 28% to 21%; ORIF, from 59% to 55%). Although reverse TSA accounted for 32.2% of arthroplasty procedures for proximal humerus fractures in 2011, this value was 53.3% in 2013 (P<.001). In 2013, mean total hospital cost for reverse TSA was $24,154, which was significantly higher than that for ORIF ($16,269) or hemiarthroplasty ($19,175) (P<.001). In a multivariable model, patients undergoing reverse TSA were less likely than those undergoing hemiarthroplasty to be discharged to a skilled nursing facility (odds ratio, 0.75; P=.027). The national rate of reverse TSA nearly doubled from 2011 to 2013. As of 2013, reverse TSA replaced hemiarthroplasty as the most commonly performed arthroplasty procedure for proximal humerus fractures for patients 65 years and older. Patients undergoing reverse TSA were more likely than those undergoing hemiarthroplasty to be discharged home. [Orthopedics. 2017; 40(6):e982-e989.].


Asunto(s)
Artroplastía de Reemplazo de Hombro/estadística & datos numéricos , Fracturas del Hombro/cirugía , Anciano , Artroplastía de Reemplazo de Hombro/economía , Bases de Datos Factuales , Epífisis/cirugía , Femenino , Fijación Interna de Fracturas/economía , Fijación Interna de Fracturas/estadística & datos numéricos , Hemiartroplastia/economía , Hemiartroplastia/estadística & datos numéricos , Costos de Hospital , Humanos , Húmero/cirugía , Tiempo de Internación/economía , Tiempo de Internación/estadística & datos numéricos , Masculino , Oportunidad Relativa , Reducción Abierta/estadística & datos numéricos , Alta del Paciente/estadística & datos numéricos , Fracturas del Hombro/economía
19.
J Shoulder Elbow Surg ; 25(11): 1854-1860, 2016 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-27528540

RESUMEN

BACKGROUND: Displaced intra-articular distal humeral fractures are a challenging injury in elderly patients. High rates of complications have led to the increasing use of total elbow arthroplasty (TEA) for primary treatment. This study presents US nationwide trends in primary TEA for distal humeral fractures in elderly patients (65 years and older) from 2002 to 2012. We hypothesized that there was an increase in the rate of TEA utilization. METHODS: Data were obtained from the Nationwide Inpatient Sample for the years 2002 to 2012. All inpatients 65 years and older with distal humeral fractures were identified and were divided into 2 subgroups based on the operation they received: (1) TEA and (2) open reduction-internal fixation (ORIF). RESULTS: Between 2002 and 2012, the annual frequency of TEA for elderly patients with distal humeral fractures increased 2.6-fold, with 147 patients in 2002 and 385 in 2012. In 2012, TEA was performed in 13% of operatively treated distal humeral fractures compared with only 5.1% in 2002 (P < .05). Mean hospital charges increased significantly for both the ORIF and TEA groups from 2002 to 2012. The average hospital charge for TEA in 2012 was $85,365, which was $16,358 higher than that for patients who underwent ORIF (P < .05). CONCLUSION: The national rate of primary TEA for the acute management of distal humeral fractures in elderly patients has increased significantly over the past 10 years. Given the significant complexity, long-term restrictions, and risks associated with TEA, this increasing trend should be analyzed closely.


Asunto(s)
Artroplastia de Reemplazo de Codo/estadística & datos numéricos , Fracturas del Húmero/cirugía , Anciano , Artroplastia de Reemplazo de Codo/tendencias , Articulación del Codo/cirugía , Femenino , Fijación Interna de Fracturas/estadística & datos numéricos , Fijación Interna de Fracturas/tendencias , Encuestas de Atención de la Salud , Capacidad de Camas en Hospitales , Precios de Hospital/estadística & datos numéricos , Hospitales/estadística & datos numéricos , Humanos , Masculino , Servicios de Salud Rural/estadística & datos numéricos , Estados Unidos/epidemiología , Servicios Urbanos de Salud/estadística & datos numéricos
20.
Injury ; 46 Suppl 3: S19-22, 2015 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-26458294

RESUMEN

INTRODUCTION: Surgical management of calcaneus fractures is technically demanding and has a high risk of wound complications. These fractures are traditionally managed with splinting until swelling has subsided, which can take weeks and leaves the fracture fragments displaced. We describe a novel protocol for the management of displaced intraarticular calcaneus fractures that utilises a temporising external fixator and staged conversion to plate fixation through a sinus tarsi approach. The goal of this technique was to enable earlier treatment with open reduction and internal fixation, minimise the amount of manipulation required at the time of definitive fixation and reduce the wound complication rate seen with the traditional extensile approach. METHODS: The records of patients with displaced calcaneus fractures from 2010-2014 were reviewed retrospectively. A total of nine patients with 10 calcaneus fractures were treated using this protocol. All patients underwent ankle-spanning medial external fixation within 48 hours after injury. Patients underwent conversion to open plate fixation through a sinus tarsi approach when skin turgor had returned to normal. Time to surgery, infection rate, wound complications, radiographic alignment, and time to radiographic union were recorded. RESULTS: The average Bohler's angle improved from 13.2 (range -2 to 34) degrees preoperatively to 34.3 (range 26 to 42) degrees postoperatively. The average time from external fixation to conversion to internal fixation was 4.8 (range 3 to 7) days. There were no immediate post-surgical complications. The average time to weight-bearing was 8.5 weeks. The average time to radiographic union was 9.5 (range 8 to 12) weeks. There were no infections or wound complications at the time of last follow-up. CONCLUSION: Early temporising external fixation for the acute management of displaced calcaneus fractures is a safe and effective method to reduce and stabilise the foot and may decrease the time to definitive fixation. There were no complications related to the use of the external fixator in this series.


Asunto(s)
Placas Óseas , Calcáneo/lesiones , Fijadores Externos , Traumatismos de los Pies/cirugía , Fijación de Fractura/métodos , Fracturas Óseas/cirugía , Infección de la Herida Quirúrgica/prevención & control , Adulto , Calcáneo/cirugía , Femenino , Traumatismos de los Pies/patología , Fijación de Fractura/instrumentación , Curación de Fractura , Fracturas Óseas/patología , Humanos , Masculino , Persona de Mediana Edad , Rango del Movimiento Articular , Estudios Retrospectivos , Infección de la Herida Quirúrgica/etiología , Resultado del Tratamiento , Soporte de Peso
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