Radiographic Assessment of Bone Quality Using 4 Radiographic Indexes: Canal Diaphysis Ratio Is Superior.

BACKGROUND: Osteoporosis increases the risk of periprosthetic fracture and loosening in hip arthroplasty. Many methods have been proposed to assess bone quality in X-rays, including both qualitative such as the Dorr classification and quantitative such as the Calcar-Canal Ratio (CCR) and Cortical-Thickness index/Canal-Bone ratio (CTI/CBR). The Canal-Diaphysis ratio (CDR) has been described as a predictor for hip fragility fractures; however, its relationship with bone mineral density (BMD) has not been described. The purpose of this study was to evaluate the correlation of the Dorr classification, CCR, CTI/CBR, and CDR with BMD of the proximal femur in patients without hip fracture. METHODS: Forty-seven patients over 45 years of age who had less than 6 months between radiographs and dual-energy X-ray absorptiometry were evaluated. Measurements of CCR, CBR, CDR, and Dorr classification were performed in all radiographs by 2 independent observers. RESULTS: The CDR had a high correlation (r = 0.74, P=<0.01) with BMD, whereas the CTI/CBR had a moderate correlation (r = 0.49, P=<0.01), and the CCR had no correlation with BMD (r = 0.06, P = .96). When evaluating the receiver operating characteristic curve, CDR showed the best performance (area under curve [AUC] = 0.75) followed by CBR (AUC = 0.73) and CCR (AUC = 0.61). The optimal cutoff value for the CDR was 0.49, with 100% sensitivity and 58% specificity. The inter- and intra-observer variability was good for all methods. No differences were found between Dorr classification of patients who had or did not have osteoporosis. CONCLUSION: Of all the analyzed methods, the CDR was found to have the best correlation with BMD. This study proposes the use of CDR as a tool for assessing bone quality when deciding the implant fixation method in hip arthroplasty.

[Diagnosis and referral of musculoskeletal tumors]. / Estudio clínico, radiológico y derivación en tumores musculoesqueléticos.

Musculoskeletal tumors are uncommon. However, the true burden of all bone and soft tissue tumors of extremities is underestimated. Usually, the diagnosis of sarcomas is missed or delayed. Therefore, an adequate clinical and radiological assessment, along with the awareness and application of simple guidelines for referral to a specialized center, are of utmost importance. These are critical steps for an appropriate diagnosis and treatment of sarcomas, improving their prognosis.

Comparison between different prognostic models to be used for metastatic bone disease on appendicular skeleton in a Chilean population.

PURPOSE: Several preoperation prognosis models used on the treatment of metastatic bone disease on appendicular skeleton have been devised. The purpose of this study was to compare the performance of different survival prognostic models on patients with metastatic bone disease in long bones in a Chilean population. METHODS: This is a multicentric retrospective study. We retrospectively reviewed the medical records of 136 patients who were confirmed with metastatic bone disease of the appendicular skeleton and who were treated surgically from 2016 to 2019. The minimum follow-up time was 12 months. All patients were assessed using four appendicular metastatic bone disease scoring systems. A preoperative predicted survival time for all 136 patients was retrospectively calculated making use of the revised Katagiri, PathFx, Optimodel and IOR score model. RESULTS: The PathFx model demonstrated an accuracy at predicting 3 (area under the curve [AUC] = 0.61) and 6-month (AUC = 0.65) survival time after surgical management. IOR score model demonstrated an accuracy at predicting 12-month survival time (AUC = 0.64). The survival rate reached the 44% in a year. The median survival time to death or last follow-up time was 14.9 months (SD ± 15). CONCLUSION: PathFx score model demonstrated the highest accuracy at predicting a survival time of 3 and 6 months. IOR score model was the most accurate measure at predicting a survival time of 12-months. To our knowledge, this is the first study reporting a comparative analysis of metastatic bone disease with predicting models in a country located in Latin America. PathFx's and IOR score models are the ones to be used in the Chilean population as the predictive models in metastatic bone disease of the appendicular skeleton.

Contamination rate of the surgical gowns during total hip arthroplasty.

INTRODUCTION: Surgical instrument contamination during total joint replacement is a matter of major concern. Available recommendations suggest changing suction tips, gloves and avoiding light handle manipulation during the procedure. There is a paucity of data regarding surgical gown contamination. The aim of the present study was to evaluate the contamination rate of surgical gowns (SGs) during total hip arthroplasty (THA) and secondarily compare it with other orthopedic procedures. MATERIALS AND METHODS: One hundred and forty surgical gowns (from 70 surgeries) were screened for bacterial contamination using thioglycolate (a high-sensitivity culture broth). The THA contamination rate was compared with those of knee and spine procedures. Controls were obtained at the beginning of every surgery and from the culture broth. The procedure's duration and the level of training of the surgeon were evaluated as potential risk factors for contamination. RESULTS: Bacterial contamination was identified on 12% of surgical gowns (22% of surgical procedures). The contamination rate during THA was 4.1% (2% in primary THA and 8.3% in revisions) vs 21.67% during other surgeries (spine and knee) (OR 6.15, p = 0.012). There were no contaminated SGs during THAs performed in ≤ 2 h (0/33 SGs) vs 7.5% (3/40) for THAs that took ≥ 2 h (p = 0.25). CONCLUSION: There was a high rate of SG contamination during orthopedic procedures that was higher during non-arthroplasty procedures and prolonged THAs. There were no contaminated surgical gowns in THAs under 120 min, efforts should point keeping primary THAs under this cutoff time. As a general recommendation, SGs should be changed every time there is concern about potential contamination.

[Management of hip fractures in the elderly. A national survey among Chilean orthopaedic surgeons]. / Controversias en el manejo de la fractura de cadera en el adulto mayor. Encuesta nacional a Traumatólogos especialistas en cirugía de cadera.

BACKGROUND: As the population ages, patients exposed to osteoporotic fractures increase, especially hip fracture, which is the most severe and costly. AIM: To characterize surgical practices in the management of hip fractures in older patients through a nationwide survey of specialized hip surgeons dedicated to the care of these patients. MATERIAL AND METHODS: A survey composed of 32 questions was formulated, including demographic factors, preoperative evaluation, definitive treatment, and postoperative management. It was sent to 140 specialists. 84 of them replied (61%), and 71 answers were included. RESULTS: Eighty six percent of respondents agreed that orthogeriatric management is fundamental in the outcome of these patients, but only 73% had the collaboration of an internist or a geriatrician. Although 97% considered 72 hours or less the ideal time to perform surgery, only 52% of the respondents declared performing surgery within that timeframe, with differences between private and public system. Regarding surgical treatment, 94-98% of femoral neck fractures are treated with an arthroplasty and 98-99% of per-subtrochanteric fractures are treated with internal fixation and osteosynthesis. Osteoporosis treatment is only carried out by 51% of the respondents and with significant variation. CONCLUSIONS: This survey shows that there is agreement in surgical practice between specialists treating these patients, but clear differences in preoperative optimization, treatment timeframe, and post fracture medical treatment.

Do Orthopaedic Oncologists Agree on the Diagnosis and Treatment of Cartilage Tumors of the Appendicular Skeleton?

BACKGROUND: Distinguishing a benign enchondroma from a low-grade chondrosarcoma is a common diagnostic challenge for orthopaedic oncologists. Low interrater agreement has been observed for the diagnosis of cartilaginous neoplasms among radiologists and pathologists, but, to our knowledge, no study has evaluated inter- and intraobserver agreement among orthopaedic oncologists grading these lesions using initial clinical and imaging information. Determining such agreement is important since it reflects the certainty in the diagnosis by orthopaedic oncologists. Agreement also is important as it will guide future treatment and prognosis, considering that there is no gold standard for diagnosis of these lesions. QUESTIONS/PURPOSES: (1) to determine inter- and intraobserver agreement among a multinational panel of expert orthopaedic oncologists in diagnosing cartilaginous neoplasms based on their assessment of clinical symptoms and imaging at diagnosis. (2) To describe the most important clinical and imaging features that experts use during the initial diagnostic process. (3) To determine interobserver agreement for proposed initial treatment strategies for cartilaginous neoplasms by this panel of evaluators. METHODS: Thirty-nine patients with intramedullary cartilaginous neoplasms of the appendicular skeleton of various histopathologic grades were selected and classified as having benign, low-grade malignant, or intermediate- or high-grade malignant neoplasms by 10 experienced orthopaedic oncologists based on clinical and imaging information. Additionally, they chose the three most important clinical or imaging features for the diagnosis of these neoplasms, and they proposed a treatment strategy for each patient. The Kappa coefficient (κ) was used to determine inter- and intraobserver agreement. RESULTS: Inter- and intraobserver agreements were only fair to good, κ = 0.44(95% CI, 0.41-0.48) and κ = 0.62 (95% CI, 0.52-0.72), respectively. The three factors most frequently identified as helpful in making the diagnosis by our panel were cortical involvement in 65% of evaluations (253/390), neoplasm size in 51% (198/390), and pain in 50% (194/390). The interobserver agreement for the proposed initial treatment strategy after diagnosis was poor (κ = 0.21; 95% CI, 0.18-0.24). CONCLUSIONS: This study showed barely fair interobserver and fair to good intraobserver agreement for grading of intramedullary cartilaginous neoplasms by orthopaedic oncologists using initial clinical and imaging findings. These results reflect the insufficient guidance interpreting clinical and imaging features, and the limitations of the systems we use today when making these diagnoses. In the same way, they generate concern for the implications that this may have on different treatment strategies and the future prognosis of our patients. Future studies should build on these observations and focus on clarifying our criteria of diagnosis so that treatment recommendations are standardized regardless of the treating institution or oncologist. LEVEL OF EVIDENCE: Level III, diagnostic study.

[Perioperative care of older patients with hip fractures]. / Optimización perioperatoria del paciente anciano con fractura osteoporótica de cadera.

The number of osteoporotic fractures is increasing along with population aging. Most patients with these type of fractures are older than 65 years, with multiple chronic conditions and different degrees of disability. Hip fracture is the most relevant osteoporotic fracture due to its frequency, costs, severity and complications. Multidisciplinary management is of the utmost importance to obtain good therapeutic results. We herein review the management of this fracture. Orthogeriatric joint management should be incorporated in fragility fracture treatment. We contribute with general recommendations for the perioperative management, which can be homologated for the management of older patients with other type of fragility fractures.

[Vitamin D levels among Chilean older subjects with low energy hip fracture]. / Prevalencia de insuficiencia y deficiencia de vitamina D en adultos mayores con fractura de cadera en Chile.

BACKGROUND: Vitamin D deficiency is a common condition affecting 40-100% of geriatric population. AIM: To determine the prevalence of vitamin D insufficiency and deficiency in geriatric population surgically treated for hip fracture. PATIENTS AND METHODS: Analysis of a database of patients aged over 60 years operated for a low energy hip fracture in a three years period. Vitamin D was measured in identified patients, using a blood sample obtained on admission to the hospital. A logistic regression was carried out to evaluate age, gender, morbidity index and season as predictors of vitamin D deficiency. RESULTS: Two hundred and twenty-eight patients aged 84 ± 7 years (82% females), were included in the analysis. One hundred eighty-three patients (80%) presented vitamin D levels below 20 ng/dl (deficiency) and 39 patients (18%) presented with levels between 20 and 30 ng/dl (insufficiency), totaling 98% of patients with hypovitaminosis D. Vitamin D deficiency was especially common among patients with higher American Society of Anesthesiologists (ASA) Physical Status Classification System and during winter-spring period. A negative correlation between age and the proportion of subjects with vitamin D deficiency was found. There was no relation between gender and vitamin D levels. CONCLUSIONS: Vitamin D deficiency is especially prevalent in older subjects with hip fracture, reaching 98% in the studied population.

Controversies in orthopaedic oncology.

Chondrosarcoma is the second most common surgically treated primary bone sarcoma. Despite a large number of scientific papers in the literature, there is still significant controversy about diagnostics, treatment of the primary tumour, subtypes, and complications. Therefore, consensus on its day-to-day treatment decisions is needed. In January 2024, the Birmingham Orthopaedic Oncology Meeting (BOOM) attempted to gain global consensus from 300 delegates from over 50 countries. The meeting focused on these critical areas and aimed to generate consensus statements based on evidence amalgamation and expert opinion from diverse geographical regions. In parallel, periprosthetic joint infection (PJI) in oncological reconstructions poses unique challenges due to factors such as adjuvant treatments, large exposures, and the complexity of surgery. The meeting debated two-stage revisions, antibiotic prophylaxis, managing acute PJI in patients undergoing chemotherapy, and defining the best strategies for wound management and allograft reconstruction. The objectives of the meeting extended beyond resolving immediate controversies. It sought to foster global collaboration among specialists attending the meeting, and to encourage future research projects to address unsolved dilemmas. By highlighting areas of disagreement and promoting collaborative research endeavours, this initiative aims to enhance treatment standards and potentially improve outcomes for patients globally. This paper sets out some of the controversies and questions that were debated in the meeting.

Hip Fractures in the Elderly During the COVID-19 Pandemic: A Latin-American Perspective With a Minimum 90-Day Follow-Up.

INTRODUCTION: Hip fracture patients have been severely affected by the COVID-19 pandemic; however, the sub acute effects of a concomitant SARS-CoV-2 infection and the outcomes in highly exposed developing countries are still unknown. Our objective is to describe the morbidity and mortality of elderly patients admitted for a hip fracture during the COVID-19 pandemic in Chile, with a minimum 90-day follow-up. Also, to elucidate predictors for mortality and to compare mortality results with the pre-pandemic era. MATERIAL AND METHODS: Multicentric retrospective review of patients admitted for a fragility hip fracture in 3 hospitals during the COVID-19 pandemic, and during the same time in 2019. All clinical information and images were recorded, and patients were followed for a minimum of 90-days. Morbidity and mortality were the primary outcomes. Uni/multivariable models were performed to elucidate predictors for mortality utilizing the Weibull's regression. RESULTS: Three hundred ninety-one cases were included. From the 2020 cohort (162 patients), 24 (15%) had a concomitant SARS-CoV-2 infection. Fourteen patients (58%) tested positive after admission. The COVID-19(+) group had a higher risk of in-hospital, 30-day, and 90-day mortality (p < 0.001). They also had a prolonged hospital stay and presented with more complications and readmissions (p < 0.05). Only COVID-19(+) status and older age were independent predictors for mortality with a HR = 6.5 (p = < 0.001) and 1.09 (p = 0.001), respectively. The 2020 cohort had twice the risk of mortality with a HR = 2.04 (p = 0.002) compared to the 2019 cohort. However, comparing only the COVID-19 (-) patients, there was no difference in mortality risk, with a HR = 1.30 (p = 0.343). DISCUSSION: The COVID-19 pandemic has significantly affected healthcare systems and elderly patients. CONCLUSIONS: Hip fracture patients with a concomitant SARS-CoV-2 virus infection were associated with increased morbidity and mortality throughout the first 3 months. COVID-19 status and older age were significant predictors for mortality. Efforts should be directed into nosocomial infection reduction and prompt surgical management. LEVEL OF EVIDENCE: Level III.

Methicillin-resistant Staphylococcus aureus colonization in patients undergoing primary total hip arthroplasty.

Introduction. Nasal and skin colonization by methicillin-resistant Staphylococcus aureus (MRSA) are linked to a higher incidence of infection after total joint replacement. The prevalence of colonization is poorly defined in Latin American countries.Aim. The aim of the present study was to determine the prevalence of MRSA colonization in the nostrils and groin using real-time polymerase chain reaction (RT-PCR) in patients undergoing total hip arthroplasty (THA).Methodology. In this cross-sectional study, 146 patients undergoing THA between December 2015 and March 2017 in a tertiary-care university-affiliated hospital in Chile were screened for MRSA colonization before the procedure using RT-PCR independently in the nostrils and groin. Risk factors for colonization were documented.Results. Seven of the 146 (5 %) patients undergoing THA were carriers of MRSA in the nostrils and/or the groin. Recent antibiotic use was identified as a risk factor for colonization, OR=4.86 [95 % confidence interval (CI): 1.56-13.96]. Patients reporting at least one of the seven surveyed risk factors had an OR of 2.39 (95 % CI: 0.37-25.77) for colonization. MRSA colonization frequency was twofold higher in the groin as opposed to the nostrils (P=0.014).Conclusion. Five percent of the patients undergoing THA were identified as carriers of MRSA. Recent antibiotic use is a relevant risk factor for MRSA colonization in patients undergoing primary total hip arthroplasty.

The influence of the CT scan in the evaluation and treatment of nondisplaced femoral neck fractures in the elderly.

BACKGROUND: The management of nondisplaced femoral neck fractures (FNFs) has evolved, with emphasis in radiographic features such as posterior displacement. However, the role of advanced imaging in this scenario is still not well defined. Therefore, our objective is to assess the impact of a computed tomography scan (CT) on interobserver agreement (IA) of fracture classification, posterior tilt measurement, and treatment decisions in nondisplaced FNF in elderly patients. METHODS: Eleven patients with a nondisplaced (Garden 1-2) FNF were assessed by six hip surgeons. On a first stage, fracture classification, posterior tilt, and treatment plan (fixation/arthroplasty) were determined only with clinical information and X-rays. On a second stage, a CT was added. The kappa coefficient ( κ) and intraclass correlation coefficient (ICC) were used to determine IA. RESULTS: IA for Garden classification was only slight in X-rays and with the addition of a CT, with a κ = 0.13 (0-0.28) and 0.18 (0.03-0.33), respectively. Conversely, posterior tilt measurement agreement was excellent in both schemes, with an ICC = 0.92 (0.83-0.98) and 0.92 (0.82-0.98). The IA for the proposed treatment was slight with X-rays ( κ = 0.44; 0.29-0.6), but moderate with the addition of a CT scan ( κ = 0.67; 0.52-0.82). Changes in surgical decision where made in 14 of 66 evaluations with an OR = 1.4 (0.62-3.2) for choosing an arthroplasty if a CT was used. CONCLUSION: IA for fracture classification and posterior tilt evaluation in nondisplaced FNF was not altered by the usage of a CT. There is improvement in treatment agreement when a CT scan is added to conventional imaging, with changes in treatment in 21% of cases.

[Primary musculo-skeletal echinococcosis of chronic evolution]. / Equinococosis quística músculo-esquelética primaria de evolución crónica.

Cystic echinococcosis is a chronic parasitic zoonosis of high prevalence in Chile. We report a clinical case of a 66-year-old man, domiciled in an urban area of the Maule Region, who presents skeletal muscle cystic echinococcosis. Consultation for pain, volume increase and left thigh fistula that gives out crystalline fluid. In the study with imaging techniques, multiple cystic lesions are identified in the sacral wing, iliac bone, soft tissues of the groin and left thigh. No cysts were evident in other organs. Serology Elisa IgG was positive Echinococcus granulosus. Surgical resection of soft tissue injuries. Combined antiparasitic therapy with albendazole and praziquantel was started, with good clinical response. Upon discontinuation of antiparasitic therapy at the initiative of the patient, symptoms are reinitiated.

Educación en pacientes adultos mayores sometidos a endoprótesis total de cadera: Un enfoque centrado en las preferencias de los pacientes / Education in older patients undergoing total hip endoprosthesis: An approach focused on patient preferences

Propósito del estudio: Explorar las preferencias educativas de los beneficiarios adultos de las Garantías Explicitas en Salud (GES) sometidos a una cirugía de endoprótesis total de cadera. Material y método: Estudio descriptivo de carácter mixto. Se diseñó una encuesta que exploró las preferencias educativas referentes a cada etapa del proceso quirúrgico de adultos mayores sometidos electivamente a endoprótesis total de cadera en un centro hospitalario universitario. La encuesta se aplicó retrospectivamente de manera telefónica por un encuestador entrenado. El tiempo transcurrido entre la aplicación de la encuesta y la cirugía fue entre 2 y 14 meses. Resultados: Se incluyeron 63 pacientes, cuya edad promedio fue 72,5 años y el 69,8% correspondía al sexo femenino. Con respecto a su previsión de salud el 57,2% era beneficiario de FONASA y el 42,7% de ISAPRE. Las preferencias de información descritas en nuestra muestra con respecto al proceso quirúrgico desde su inicio a fin, señalan a la cirugía propiamente tal (40,4%) y los cuidados post operatorios (29,3%) como los temas de más interés. Los temas de menor interés fueron los relacionados con cuidados preoperatorios (45,2%) y al proceso de hospitalización (31,7%). Los pacientes encuestados valoraron la información entregada previa a su cirugía como adecuada, útil y fácil de entender. Conclusiones: Los adultos mayores sometidos a endoprótesis señalaron la información específica referente a la cirugía y los cuidados post operatorios como los temas educativos de mayor interés. La información estándar entregada por los médicos tratantes fue bien recibida por los pacientes.

Purpose of the study: To explore the educational preferences of adults aged 65 years and older with hip osteoarthritis undergoing total hip replacement (THA). Methods: Mixed descriptive study. A survey was designed to explore the educational preferences regarding each stage of the surgical process in elderly patients undergoing electively THA for osteoarthritis in a university-affiliated hospital. The survey was applied retrospectively and telephonically by a trained interviewer between 2 and 14 months after the surgery.Results: Sixty-three patients were surveyed, whose average age was 72.5 years, and 69.8% corresponded to females. Regarding their health coverage, 57.2% were beneficiaries of FONASA and 42.7% of ISAPRE. The educational preferences described in our sample regarding the surgical process from its beginning to the end indicate that surgery (40.4%) and post-operative care (29.3%) as the most relevant topics. The topics of least interest were preoperative care (45.2%) and information related to hospitalization (31.7%). The surveyed pa-tients rated their treating physician's education as adequate, helpful, and easy to understand before their surgery. Conclusions: Elderly patients undergoing THA indicated that specific surgery and post-operative care information are the most relevant educational topics.

Estudio clínico, radiológico y derivación en tumores musculoesqueléticos / Diagnosis and referral of musculoskeletal tumors

Musculoskeletal tumors are uncommon. However, the true burden of all bone and soft tissue tumors of extremities is underestimated. Usually, the diagnosis of sarcomas is missed or delayed. Therefore, an adequate clinical and radiological assessment, along with the awareness and application of simple guidelines for referral to a specialized center, are of utmost importance. These are critical steps for an appropriate diagnosis and treatment of sarcomas, improving their prognosis.

Surgical dislocation of the hip without trochanteric osteotomy.

BACKGROUND: Surgical dislocation of the hip remains an important alternative in hip preservation surgery, especially when a dynamic access to the hip is needed and arthroscopy is not a suitable option. We describe a novel technique for operative dislocation of the hip without trochanteric osteotomy and the clinical results of our patients. METHODS: Surgical dislocation of the hip without trochanteric osteotomy was done through a modified lateral approach in all of the cases. A review of demographic, clinical, and radiological data was done in all of the patients operated with this technique between 2010 and 2015. Complications, walking aids, weight-bearing status, and modified Harris Hip Score (mHHS) were also recorded. RESULTS: Six surgical dislocations of the hip were carried out. Indications were tumor resection in five and bulletectomy in one hip. There were two women (four hips) and two men. Mean age was 19 ± 3.8 years. Median follow-up was 2.5 years (range 2-4.5 years). Median mHHS was 92 (90-96). There were no intraoperative nor postoperative complications. CONCLUSIONS: Surgical dislocation of the hip without trochanteric osteotomy through a modified lateral approach appears to be a safe, simpler, and effective alternative.

Surgical light handles: a source of contamination in the surgical field.

OBJECTIVE: Total hip arthroplasty (THA) is a common and generally safe procedure; however, among the most devastating complications associated with THA is periprosthetic infection (PPI). The origin of bacteria causing PPI is not completely understood. The aims of the present study were to identify bacterial contamination of light handles with up-to-date culture methods and to determine the safety in using these handles in hip arthroplasty surgery. METHODS: A total of 36 surgical handles randomly selected from primary hip arthroplasty procedures were screened for bacterial contamination using 2 different culture methods, including 1 with high sensitivity. Two types of controls were used. Cultures were kept for up to 10 days, and retrieved bacteria were identified. RESULTS: Fifty percent of the light handles yielded positive cultures, demonstrating a bacterial presence on surgical light handles during hip arthroplasty. The most frequently identified bacteria were Staphylococcus epidermidis and Staphylococcus aureus. CONCLUSION: A large number of positive bacterial cultures were found in manipulated light handles during hip replacement surgery, representing a potential contamination source that could eventually lead to infection in hip arthroplasty.

Controversias en el manejo de la fractura de cadera en el adulto mayor. Encuesta nacional a Traumatólogos especialistas en cirugía de cadera / Management of hip fractures in the elderly. A national survey among Chilean orthopaedic surgeons

Background: As the population ages, patients exposed to osteoporotic fractures increase, especially hip fracture, which is the most severe and costly. Aim: To characterize surgical practices in the management of hip fractures in older patients through a nationwide survey of specialized hip surgeons dedicated to the care of these patients. Material and Methods: A survey composed of 32 questions was formulated, including demographic factors, preoperative evaluation, definitive treatment, and postoperative management. It was sent to 140 specialists. 84 of them replied (61%), and 71 answers were included. Results: Eighty six percent of respondents agreed that orthogeriatric management is fundamental in the outcome of these patients, but only 73% had the collaboration of an internist or a geriatrician. Although 97% considered 72 hours or less the ideal time to perform surgery, only 52% of the respondents declared performing surgery within that timeframe, with differences between private and public system. Regarding surgical treatment, 94-98% of femoral neck fractures are treated with an arthroplasty and 98-99% of per-subtrochanteric fractures are treated with internal fixation and osteosynthesis. Osteoporosis treatment is only carried out by 51% of the respondents and with significant variation. Conclusions: This survey shows that there is agreement in surgical practice between specialists treating these patients, but clear differences in preoperative optimization, treatment timeframe, and post fracture medical treatment.

Equinococosis quística músculo-esquelética primaria de evolución crónica / Primary musculo-skeletal echinococcosis of chronic evolution

Resumen La equinococosis quística es una zoonosis parasitaria crónica de alta prevalencia en Chile. Se presenta el caso clínico de un varón de 66 años, proveniente de la Región del Maule, con una equinococosis quística músculo-esquelética. Consultó por dolor, aumento de volumen y una fístula en muslo izquierdo, con salida de líquido cristalino. En el estudio imagenológico se identificaron múltiples lesiones quísticas en el ala sacra, hueso ilíaco y tejidos blandos de zona inguinal y muslo izquierdo. La serología Elisa IgG para Equinococcus granulosus fue positiva. Se realizó la resección quirúrgica de las lesiones musculares y se inició terapia antiparasitaria combinada con albendazol y praziquantel, con buena respuesta clínica; sin embargo, al suspender la terapia, por iniciativa del paciente, se reiniciaron los síntomas.

Cystic echinococcosis is a chronic parasitic zoonosis of high prevalence in Chile. We report a clinical case of a 66-year-old man, domiciled in an urban area of the Maule Region, who presents skeletal muscle cystic echinococcosis. Consultation for pain, volume increase and left thigh fistula that gives out crystalline fluid. In the study with imaging techniques, multiple cystic lesions are identified in the sacral wing, iliac bone, soft tissues of the groin and left thigh. No cysts were evident in other organs. Serology Elisa IgG was positive Echinococcus granulosus. Surgical resection of soft tissue injuries. Combined antiparasitic therapy with albendazole and praziquantel was started, with good clinical response. Upon discontinuation of antiparasitic therapy at the initiative of the patient, symptoms are reinitiated.

Optimización perioperatoria del paciente anciano con fractura osteoporótica de cadera / Perioperative care of older patients with hip fractures

The number of osteoporotic fractures is increasing along with population aging. Most patients with these type of fractures are older than 65 years, with multiple chronic conditions and different degrees of disability. Hip fracture is the most relevant osteoporotic fracture due to its frequency, costs, severity and complications. Multidisciplinary management is of the utmost importance to obtain good therapeutic results. We herein review the management of this fracture. Orthogeriatric joint management should be incorporated in fragility fracture treatment. We contribute with general recommendations for the perioperative management, which can be homologated for the management of older patients with other type of fragility fractures.