Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 15 de 15
Filter
1.
J Hand Surg Am ; 2023 May 17.
Article in English | MEDLINE | ID: mdl-37204359

ABSTRACT

PURPOSE: During recovery from upper-extremity injury, patients sometimes express concerns regarding pain associated with increased use of the uninjured limb. Concerns about discomfort associated with increased use may represent a manifestation of unhelpful thoughts such as catastrophic thinking or kinesiophobia. We asked the following questions: (1) Among people recovering from an isolated unilateral upper-extremity injury, is pain intensity in the uninjured arm associated with unhelpful thoughts and feelings of distress regarding symptoms, accounting for other factors? (2) Is pain intensity in the injured extremity, magnitude of capability, or accommodation of pain associated with unhelpful thoughts and feelings of distress regarding symptoms? METHODS: In this cross-sectional study of new or returning patients presenting to a musculoskeletal specialist for care for an upper-extremity injury, the patients completed scales that were used to measure the following: pain intensity in the uninjured arm, pain intensity in the injured arm, upper-extremity-specific magnitude of capability, symptoms of depression, symptoms of health anxiety, catastrophic thinking, and accommodation of pain. Multivariable analysis was used to evaluate factors associated with pain intensity in the uninjured arm, pain intensity in the injured arm, magnitude of capability, and pain accommodation, controlling for other demographic and injury-related factors. RESULTS: Greater pain intensity in both uninjured and injured arms was independently associated with greater unhelpful thinking regarding symptoms. A greater magnitude of capability and pain accommodation were independently associated with less unhelpful thinking regarding symptoms. CONCLUSIONS: Given that greater pain intensity in the uninjured upper extremity is associated with greater unhelpful thinking, clinicians can be attuned to patient concerns about contralateral pain. Clinicians can facilitate recovery from upper-extremity injury by evaluating the uninjured limb as well as identifying and ameliorating unhelpful thinking regarding symptoms. TYPE OF STUDY/LEVEL OF EVIDENCE: Prognostic II.

2.
Clin Orthop Relat Res ; 481(12): 2368-2376, 2023 12 01.
Article in English | MEDLINE | ID: mdl-37249315

ABSTRACT

BACKGROUND: Patients recovering from lower extremity injuries often interpret discomfort associated with increased use of the uninjured leg as a potential indication of harm. If expressed concerns regarding contralateral leg pain are associated with unhelpful thinking regarding symptoms, they can signal orthopaedic surgeons to gently reorient these thoughts to help improve comfort and capability during recovery. QUESTIONS/PURPOSES: We asked: (1) Among people recovering from isolated traumatic lower extremity injury, is pain intensity in the uninjured leg associated with unhelpful thoughts and feelings of distress regarding symptoms, accounting for other factors? (2) Are pain intensity in the injured leg, magnitude of capability, and accommodation of pain associated with unhelpful thoughts and feelings of distress regarding symptoms? METHODS: Between February 2020 and February 2022, we enrolled 139 patients presenting for an initial evaluation or return visit for any traumatic lower extremity injury at the offices of one of three musculoskeletal specialists. Patients had the option to decline filling out our surveys, but because of the cross-sectional design, required fields on the electronic survey tools, and monitored completion, there were few declines and few incomplete surveys. The median age of participants was 41 years (IQR 32 to 58), and 48% (67 of 139) were women. Fifty percent (70 of 139) injured their right leg. Sixty-five percent (91 of 139) had operative treatment of their fracture. Patients completed measures of pain intensity in the uninjured leg, pain intensity in the injured leg, lower extremity-specific magnitude of capability, symptoms of depression, symptoms of health anxiety, catastrophic thinking, and accommodation of pain. Multivariable analysis sought factors independently associated with pain intensity in the uninjured leg, pain intensity in the injured leg, magnitude of capability, and pain accommodation, controlling for other demographic and injury-related factors. RESULTS: Greater pain intensity in the uninjured leg (regression coefficient [RC] 0.09 [95% CI 0.02 to 0.16]; p < 0.01) was moderately associated with more unhelpful thinking regarding symptoms. This indicates that for every one-unit increase in unhelpful thinking regarding symptoms on the 17-point scale we used to measure pain catastrophizing, pain intensity in the uninjured leg increases by 0.94 points on the 11-point scale that we used to measure pain intensity, holding all other independent variables constant. Greater pain intensity in the injured leg (RC 0.18 [95% CI 0.08 to 0.27]; p < 0.01) was modestly associated with more unhelpful thinking regarding symptoms. Greater pain accommodation (RC -0.25 [95% CI -0.38 to -0.12]; p < 0.01) was modestly associated with less unhelpful thinking regarding symptoms. Greater magnitude of capability was not independently associated with less unhelpful thinking regarding symptoms. CONCLUSION: A patient's report of concerns regarding pain in the uninjured limb (such as, "I'm overcompensating for the pain in my other leg") can be considered an indicator of unhelpful thinking regarding symptoms. Orthopaedic surgeons can use such reports to recognize unhelpful thinking and begin guiding patients toward healthier thoughts and behaviors. LEVEL OF EVIDENCE: Level II, prognostic study.


Subject(s)
Leg Injuries , Leg , Humans , Female , Adult , Middle Aged , Male , Cross-Sectional Studies , Pain , Emotions , Lower Extremity , Leg Injuries/complications , Leg Injuries/diagnosis , Leg Injuries/surgery
3.
Qual Manag Health Care ; 32(2): 69-74, 2023.
Article in English | MEDLINE | ID: mdl-35714285

ABSTRACT

BACKGROUND AND OBJECTIVES: Patient experience measures tend to have notable ceiling effects that make it difficult to learn from gradations of satisfaction to improve care. This study tested 2 different iterative satisfaction measures after a musculoskeletal specialty care visit in the hope that they might have less ceiling effect. We measured floor effects, ceilings effects, skewness, and kurtosis of both questionnaires. We also assessed patient factors independently associated with the questionnaires and the top 2 possible scores. METHODS: In this cross-sectional study, 186 patients completed questionnaires while seeing 1 of 11 participating orthopedic surgeons in July and August 2019; the questionnaire measured: (1) demographics, (2) symptoms of depression, (3) catastrophic thinking in response to nociception, (4) heightened illness concerns, and (5) satisfaction with the visit on 2 iterative satisfaction scales. Bivariate and multivariable analyses sought associations of the explanatory variable with the satisfaction scales. RESULTS: There is a small correlation between the 2 scales ( r = 0.27; P < .001). Neither scale had a floor effect and both had a ceiling effect of 45%. There is a very small correlation between greater health anxiety and lower satisfaction measured with one of the scales ( r = -0.16; P = .05). CONCLUSION: An iterative satisfaction questionnaire created some spread in patient experience data, but could not limit ceiling effects. Additional strategies are needed to remove ceiling effects from satisfaction measures.


Subject(s)
Catastrophization , Patient Satisfaction , Humans , Cross-Sectional Studies , Surveys and Questionnaires
4.
Transl Behav Med ; 12(5): 642-653, 2022 05 26.
Article in English | MEDLINE | ID: mdl-35195266

ABSTRACT

The Toolkit for Optimal Recovery (TOR) is a mind-body program for patients with acute orthopedic injuries who are at risk for persistent pain/disability. In preparation for a multisite feasibility trial of TOR at three orthopedic trauma centers, we aim to qualitatively identify barriers and facilitators to study implementation and strategies to mitigate the implementation barriers and leverage facilitators.We conducted 18 live video focus groups among providers and three one-on-one interviews with department chiefs at Level 1 trauma centers in three geographically diverse sites (N = 79 participants). Using a content analysis approach, we detected the site-specific barriers and facilitators of implementation of TOR clinical trial. We organized the data according to 26 constructs of the Consolidated Framework for Implementation Research (CFIR), mapped to three Proctor implementation outcomes relevant to the desired study outcomes (acceptability, appropriateness, and feasibility). Across the three sites, we mapped six of the CFIR constructs to acceptability, eight to appropriateness, and three to feasibility. Prominent perceived barriers across all three sites were related to providers' lack of knowledge/comfort addressing psychosocial factors, and organizational cultures of prioritizing workflow efficiency over patients' psychosocial needs (acceptability), poor fit between TOR clinical trial and the fast-paced clinic structure as well as basic needs of some patients (appropriateness), and limited resources (feasibility). Suggestions to maximize the implementation of the TOR trial included provision of knowledge/tools to improve providers' confidence, streamlining study recruitment procedures, creating a learning collaborative, tailoring the study protocol based on local needs assessments, exercising flexibility in conducting research, dedicating research staff, and identifying/promoting champions and using novel incentive structures with regular check-ins, while keeping study procedures as nonobtrusive and language as de-stigmatizing as possible. These data could serve as a blueprint for implementation of clinical research and innovations in orthopedic and other medical settings.


Subject(s)
Feasibility Studies , Humans
5.
JMIR Res Protoc ; 10(4): e28155, 2021 Apr 28.
Article in English | MEDLINE | ID: mdl-33908886

ABSTRACT

BACKGROUND: Despite the pivotal role of psychosocial factors in pain and disability after orthopedic injury, there are no evidence-based preventive interventions targeting psychosocial factors in patients with acute orthopedic injuries. We developed the first mind-body intervention focused on optimizing recovery and improving pain and disability in patients with acute orthopedic injuries who exhibit high levels of catastrophic thinking about pain and/or pain anxiety (Toolkit for Optimal Recovery [TOR] after orthopedic injury). In a pilot single-site randomized controlled trial (RCT), the TOR met a priori set benchmarks for feasibility, acceptability, and satisfaction. The next step in developing TOR is to conduct a multisite feasibility RCT to set the stage for a scientifically rigorous hybrid efficacy-effectiveness trial. OBJECTIVE: The objective of this study is to conduct a rigorous multisite feasibility RCT of TOR to determine whether the intervention and study methodology meet a priori set benchmarks necessary for the successful implementation of a future multisite hybrid efficacy-effectiveness trial. In this paper, we describe the study design, manualized treatments, and specific strategies used to conduct this multisite feasibility RCT investigation. METHODS: This study will be conducted at 3 geographically diverse level 1 trauma centers, anonymized as sites A, B, and C. We will conduct a multisite feasibility RCT of TOR versus the minimally enhanced usual care (MEUC) control (60 patients per site; 30 per arm) targeting a priori set feasibility benchmarks. Adult patients with acute orthopedic injuries who endorse high pain catastrophizing or pain anxiety will be recruited approximately 1-2 months after injury or surgery (baseline). Participants randomized to the TOR will receive a 4-session mind-body treatment delivered via a secure live video by trained clinical psychologists. Participants randomized to the MEUC will receive an educational booklet. Primary outcomes include feasibility of recruitment, appropriateness, feasibility of data collection, acceptability of TOR (adherence to sessions), and treatment satisfaction across all sites. We will also collect data on secondary implementation outcomes, as well as pain severity, physical and emotional function, coping skills, and adverse events. Outcomes will be assessed at baseline, posttreatment, and at the 3-month follow-up. RESULTS: Enrollment for the RCT is estimated to begin in June 2021. The target date of completion of the feasibility RCT is April 2024. The institutional review board approval has been obtained (January 2020). CONCLUSIONS: This investigation examines the multisite feasibility of TOR administered via live videoconferencing in adult patients with acute orthopedic injuries. If feasible, the next step is a multisite, hybrid efficacy-effectiveness trial of TOR versus MEUC. Preventive psychosocial interventions can provide a new way to improve patient and provider satisfaction and decrease suffering and health care costs among patients with orthopedic injuries who are at risk for chronic pain and disability. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): PRR1-10.2196/28155.

6.
J Orthop Trauma ; 35(3): e89-e95, 2021 03 01.
Article in English | MEDLINE | ID: mdl-33105454

ABSTRACT

OBJECTIVES: Requests for opioid pain medication more than a few weeks after surgery are associated with greater symptoms of depression and cognitive biases regarding pain such as worst-case thinking and fear of painful movement. We sought factors associated with patient desire for more opioid medication and satisfaction with pain alleviation at suture removal after lower extremity surgery. DESIGN: Cross sectional study. SETTING: Enrollment occurred at 1 of 4 orthopaedic offices in an urban setting. PATIENTS/PARTICIPANTS: At suture removal after lower extremity surgery, 134 patients completed questionnaires measuring catastrophic thinking, ability to reach goals and continue normal activities in spite of pain, symptoms of depression, and magnitude of physical limitations. MAIN OUTCOME MEASUREMENTS: Psychological factors associated with questionnaire-reported patient desire for another opioid prescription, satisfaction with postoperative pain alleviation, and the self-reported number of pills remaining from original opioid prescription. RESULTS: In logistic regression, smoking and greater catastrophic thinking were independently associated with desire for opioid refill (R2 = 0.20). Lower satisfaction with pain alleviation was associated with greater catastrophic thinking (R2 = 0.19). The size of surgery (large vs. medium/small procedure) was not associated with pain alleviation or satisfaction with pain alleviation. CONCLUSIONS: The association between unhelpful cognitive bias regarding pain and request for more opioids reinforces the importance of diagnosing and addressing common misconceptions regarding pain in efforts to help people get comfortable. LEVEL OF EVIDENCE: Prognostic Level II. See Instructions for Authors for a complete description of levels of evidence.


Subject(s)
Catastrophization , Pain, Postoperative , Analgesics, Opioid , Cross-Sectional Studies , Humans , Lower Extremity/surgery , Pain Measurement , Pain, Postoperative/diagnosis , Pain, Postoperative/prevention & control
7.
Arch Bone Jt Surg ; 8(5): 581-588, 2020 Sep.
Article in English | MEDLINE | ID: mdl-33088859

ABSTRACT

BACKGROUND: We compared the amount of variation in Patient-Reported Outcomes Measurement Information System Physical Function (PROMIS PF) Computer Adaptive Test (CAT) accounted for by The Tampa Scale for Kinesiophobia (TSK) and its short form (TSK-4) independent of other factors. Questionnaire coverage, reliability, and validity were compared for both TSK and TSK-4 using mean scaled scores, internal consistency, floor and ceiling effects, interquestionnaire correlations, and collinearity with other measures as the Pain Catastrophizing Scale short form (PCS-4), PROMIS Depression CAT, and PROMIS Pain Interference (PROMIS PI) CAT. METHODS: One hundred forty eight consecutive new or return patients were enrolled. Patients were seen in an outpatient setting in several orthopaedic clinics in a large urban area. All patients completed the TSK, PROMIS PF CAT, PROMIS PI CAT, PROMIS Depression CAT, and PCS-4. RESULTS: Greater fear of movement (higher TSK) was associated with worse physical function (lower PROMIS PF CAT) and the full TSK explained more variation in physical function than the short form (TSK-4). In contrast to prior studies PCS-4 was not independent of TSK. Flooring and ceiling effects were seen with TSK-4. Worse physical function was associated with older age, traumatic condition, and more symptoms of depression. CONCLUSION: The short form of the Tampa Scale for Kinesiophobia can be used as a brief screening measure in patient care and research in order to identify an independent influence of kinesiophobia on lower extremity specific limitations. Additional study is needed to determine whether there is utility in screening for both TSK and PCS or if one or the other provides sufficient information about cognitive biases regarding pain to guide treatment with cognitive behavioral therapy and related techniques.

8.
Environ Pollut ; 262: 114250, 2020 Jul.
Article in English | MEDLINE | ID: mdl-32443197

ABSTRACT

Anthropogenic noise is an emergent ecological pollutant in both terrestrial and aquatic habitats. Human population growth, urbanisation, resource extraction, transport and motorised recreation lead to elevated noise that affects animal behaviour and physiology, impacting individual fitness. Currently, we have a poor mechanistic understanding of the effects of anthropogenic noise, but a likely candidate is the neuroendocrine system that integrates information about environmental stressors to produce regulatory hormones; glucocorticoids (GCs) and androgens enable rapid individual phenotypic adjustments that can increase survival. Here, we carried out two field-based experiments to investigate the effects of short-term (30 min) and longer-term (48 h) motorboat-noise playback on the behaviour, GCs (cortisol) and androgens of site-attached free-living orange-fin anemonefish (Amphiprion chrysopterus). In the short-term, anemonefish exposed to motorboat-noise playback showed both behavioural and hormonal responses: hiding and aggression increased, and distance moved out of the anemone decreased in both sexes; there were no effects on cortisol levels, but male androgen levels (11-ketotestosterone and testosterone) increased. Some behaviours showed carry-over effects from motorboat noise after it had ceased, and there was no evidence for a short-term change in response to subsequent motorboat-noise playback. Similarly, there was no evidence that longer-term exposure led to changes in response: motorboat noise had an equivalent effect on anemonefish behaviour and hormones after 48 h as on first exposure. Longer-term noise exposure led to higher levels of cortisol in both sexes and higher testosterone levels in males, and stress-responses to an additional environmental challenge in both sexes were impaired. Circulating androgen levels correlated with aggression, while cortisol levels correlated with hiding, demonstrating in a wild population that androgen/glucocorticoid pathways are plausible proximate mechanisms driving behavioural responses to anthropogenic noise. Combining functional and mechanistic studies are crucial for a full understanding of this global pollutant.


Subject(s)
Coral Reefs , Perciformes , Animals , Behavior, Animal , Female , Fishes , Humans , Male , Noise
9.
J Orthop Trauma ; 33 Suppl 7: S38-S42, 2019 Nov.
Article in English | MEDLINE | ID: mdl-31596783

ABSTRACT

The rise of patient-reported outcome (PRO) measurement across medicine has been swift and now extends to the world of orthopedic trauma. However, PRO measures (PROMs) applied to trauma patients pose special considerations; measuring "episodes of care" is less straightforward, injuries are heterogeneous in their severity, and the patient's initial visit is "postinjury." Obtaining baseline scores and assessing the impact of a traumatic event on mental health are key considerations. Currently, few, if any, trauma registries include PROs; though general and condition-specific PROMs plus the patient empowerment measure of Patient Activation represent meaningful inputs for the clinical decision-making process. To be useful in trauma care, PROMs should be psychometrically sound and validated, be used for capturing function, screen for mental state and substance use, and give the clinician a sense of the patient's "activation" (engagement in their own health). Although the implementation of routine PRO collection can seem daunting, clinicians can use a multitude of electronic resources to access validated measures and simplify the implementation process. Computer-adaptive testing has evolved to help minimize patient burden, and PROM collection must maximize efficiency. Once established as part of your practice, PROs become an important tool to track recovery, identify mental health issues, engage in the prevention of future injury, and enable care of the whole patient.


Subject(s)
Orthopedics , Patient Reported Outcome Measures , Traumatology , Clinical Decision-Making , Humans , Mental Health , Patient Participation , Patient Satisfaction , Recovery of Function
11.
Clin Orthop Relat Res ; 477(1): 219-228, 2019 01.
Article in English | MEDLINE | ID: mdl-30586342

ABSTRACT

BACKGROUND: Adverse childhood experiences (ACEs) affect adult mental health and tend to contribute to greater symptoms of depression and more frequent suicide attempts. Given the relationship between symptoms of depression and patient-reported outcomes (PROs), adversity in childhood might be associated with PROs in patients seeking care for musculoskeletal problems, but it is not clear whether in fact there is such an association among patients seeking care in an outpatient, upper extremity orthopaedic practice. QUESTIONS/PURPOSES: (1) Are ACE scores independently associated with variation in physical limitations measured among patients seen by an orthopaedic surgeon? (2) Are ACE scores independently associated with variations in pain intensity? (3) What factors are associated with ACE scores when treated as a continuous variable or as a categorical variable? METHODS: We prospectively enrolled 143 adult patients visiting one of seven participating orthopaedic surgeons at three private and one academic orthopaedic surgery offices in a large urban area. We recorded their demographics and measured ACEs (using a validated 10-item binary questionnaire that measured physical, emotional, and sexual abuse in the first 18 years of life), magnitude of physical limitations, pain intensity, symptoms of depression, catastrophic thinking, and health anxiety. There were 143 patients with a mean age of 51 years, 62 (43%) of whom were men. In addition, 112 (78%) presented with a specific diagnosis and most (n = 79 [55%]) had upper extremity symptoms. We created one logistic and three linear regression models to test whether age, gender, race, marital status, having children, level of education, work status, insurance type, comorbidities, body mass index, smoking, site of symptoms, type of diagnosis, symptoms of depression, catastrophic thinking, and health anxiety were independently associated with (1) the magnitude of limitations; (2) pain intensity; (3) ACE scores on the continuum; and (4) ACE scores categorized (< 3 or ≥ 3). We calculated a priori that to detect a medium effect size with 90% statistical power and α set at 0.05, a sample of 136 patients was needed for a regression with five predictors if ACEs would account for ≥ 5% of the variability in physical function, and our complete model would account for 15% of the overall variability. To account for 5% incomplete responses, we enrolled 143 patients. RESULTS: We found no association between ACE scores and the magnitude of physical limitations measured by Patient-Reported Outcomes Measurement Information System Physical Function (p = 0.67; adjusted R = 0.55). ACE scores were not independently associated with pain intensity (Pearson correlation [r] = 0.11; p = 0.18). Greater ACE scores were independently associated with diagnosed mental comorbidities both when analyzed on the continuum (regression coefficient [ß] = 1.1; 95% confidence interval [CI], 0.32-1.9; standard error [SE] 0.41; p = 0.006) and categorized (odds ratio [OR], 3.3; 95% CI, 1.2-9.2; SE 1.7; p = 0.024), but not with greater levels of health anxiety (OR, 1.1; 95% CI, 0.90-1.3; SE 0.096; p = 0.44, C statistic = 0.71), symptoms of depression (ACE < 3 mean ± SD = 0.73 ± 1.4; ACE ≥ 3 = 1.0 ± 1.4; p = 0.29) or catastrophic thinking (ACE < 3 = 3.6 ± 3.5; ACE ≥ 3 = 4.9 ± 5.1; p = 0.88). CONCLUSIONS: ACEs may not contribute to greater pain intensity or magnitude of physical limitations unless they are accompanied by greater health anxiety or less effective coping strategies. Adverse events can contribute to anxiety and depression, but perhaps they sometimes lead to development of resilience and effective coping strategies. Future research might address whether ACEs affect symptoms and limitations in younger adult patients and patients with more severe musculoskeletal pathology such as major traumatic injuries. LEVEL OF EVIDENCE: Level II, prognostic study.


Subject(s)
Adverse Childhood Experiences , Mental Health , Musculoskeletal Diseases/diagnosis , Patient Reported Outcome Measures , Adaptation, Psychological , Adolescent , Adult , Age Factors , Aged , Aged, 80 and over , Anxiety/diagnosis , Anxiety/psychology , Child , Child Abuse, Sexual/psychology , Child, Preschool , Cross-Sectional Studies , Depression/diagnosis , Depression/psychology , Disability Evaluation , Emotions , Health Status , Humans , Infant , Infant, Newborn , Middle Aged , Musculoskeletal Diseases/physiopathology , Musculoskeletal Diseases/psychology , Musculoskeletal Diseases/therapy , Pain Measurement , Patient Acceptance of Health Care , Physical Abuse/psychology , Prospective Studies , Resilience, Psychological , Risk Assessment , Risk Factors , Young Adult
12.
Int J Hist Sport ; 27(13): 2212 - 33, 2010.
Article in English | MEDLINE | ID: mdl-20845578

ABSTRACT

Historians have almost universally seen association football in the north of Ireland as a divisive influence. The impacts of sectarian and political tensions on the game have been stressed, alongside the extent to which this sport supposedly feeds into existing divisions. Much of the work carried out has concentrated on the last four decades, though even studies outside this period of widespread civil disorder have highlighted these problems. This paper uses the surviving records of the Ballymena Football and Athletic Club, the local press, census returns and other records to consider aspects of one particular Northern Irish club in the 1920s and 1930s. This short consideration of the players, supporters and shareholders suggests that at least in this case football was successful in bringing together and developing cooperation between men of widely differing political and religious views. While the club was a not a financial success, it was a social and sporting one. The evidence available suggests there was little exhibition of sectarian tension at any level.


Subject(s)
Cultural Diversity , Organizations , Secularism , Soccer , Social Identification , Cultural Characteristics , History, 20th Century , Men's Health/ethnology , Men's Health/history , Northern Ireland/ethnology , Organizations/history , Politics , Religion/history , Secularism/history , Soccer/economics , Soccer/education , Soccer/history , Soccer/legislation & jurisprudence , Soccer/physiology , Soccer/psychology , Social Problems/economics , Social Problems/ethnology , Social Problems/history , Social Problems/legislation & jurisprudence , Social Problems/psychology
13.
J Am Acad Orthop Surg ; 14(10 Spec No.): S82-6, 2006.
Article in English | MEDLINE | ID: mdl-17003216

ABSTRACT

The treatment modalities currently used in surgical débridement leave the traumatic wound with viable but tenuous tissue and a variable level of microcontaminants potentially laden with bacteria. In high-energy contaminated wounds, retention of these contaminants within the tenuous tissue of the so-called zone of stasis can result in further tissue necrosis and the development of infection. A novel protocol for managing the high-energy contaminated open fracture involves two new techniques. First, Bernoulli's principle is used to facilitate a systematic excision of contaminants, as well as the wound surface to which they are adsorbed, by means of a high-velocity fluid stream. Second, topical negative pressure is established as a means to resuscitate the remaining edema-laden wound tissue to help avoid embarrassment to microcirculatory blood flow.


Subject(s)
Compartment Syndromes/prevention & control , Debridement/methods , Fractures, Open/complications , Soft Tissue Infections/prevention & control , Compartment Syndromes/etiology , Humans , Pressure , Soft Tissue Infections/complications , Therapeutic Irrigation/methods , Treatment Outcome , Wound Healing
14.
J Orthop Res ; 23(5): 1128-38, 2005 Sep.
Article in English | MEDLINE | ID: mdl-15936918

ABSTRACT

Osteoarthritis (OA) is a degenerative cartilage disease with varying degrees of severity within a given joint. The purpose of this study was to define a sampling procedure for comparing human minimal and advanced OA cartilage in the same patient and to determine basic patterns of gene expression in these regions. A specific hypothesis under study was that the expression level of Bcl-2 would correlate with Sox9 and aggrecan mRNA expression in vivo as has been demonstrated in vitro. Femoral condylar advanced OA cartilage was located within 1cm of overt lesions, and minimal cartilage was taken from areas with no obvious surface defects. Histological sections were scored for disease severity and chondroitin sulfate and hydroxyproline content was determined. The expression level of nine specific genes (aggrecan, collagen type II, Bcl-2, Sox9, Link protein, osteopontin, and MMP-13, -3, and -9) was determined by quantitative real time PCR. The scores for fibrillation, chondrocyte cloning, and proteoglycan depletion were significantly different between advanced and minimal OA cartilage. The advanced OA cartilage had significantly less chondroitin sulfate than the minimal OA cartilage. Osteopontin mRNA expression showed a 3.6-fold increase in advanced compared to minimal OA cartilage. In contrast, the level of mRNA coding for aggrecan, link protein, Bcl-2, Sox9 and MMP-3, -9, -13 were all decreased in advanced compared to minimal cartilage in the majority of the patients studied. Collagen type II mRNA expression displayed a wide-range of variation. A statistically significant correlation was observed both between Bcl-2 and Sox9 mRNA level, and between Bcl-2 and aggrecan mRNA expression. The patient matched comparison of minimal and advanced OA cartilage revealed differences in cellular and tissue characteristics, and changes in gene expression that may be involved in OA progression. In addition, Bcl-2 may also play a role in regulating the expression of aggrecan through Sox9 in vivo as well as in vitro.


Subject(s)
Cartilage, Articular/metabolism , Chondrocytes/metabolism , Gene Expression Profiling , Osteoarthritis/metabolism , Aged , Aged, 80 and over , Collagen Type II/genetics , Glycosaminoglycans/analysis , High Mobility Group Proteins/genetics , Humans , Matrix Metalloproteinase 3/genetics , Matrix Metalloproteinase 9/genetics , Phenotype , Proto-Oncogene Proteins c-bcl-2/genetics , RNA, Messenger/analysis , SOX9 Transcription Factor , Transcription Factors/genetics
SELECTION OF CITATIONS
SEARCH DETAIL
...