RESUMEN

PURPOSE: Transition from acute to chronic pain often occurs after major lower extremity trauma. Chronic pain has been found to negatively affect daily functioning, including the capacity to work and quality of life. Empirical data and an acceptability assessment were used to develop a self-management intervention aimed at preventing acute to chronic pain transition after major lower extremity trauma (i.e., iPACT-E-Trauma). METHODS: Evidence from previous studies on preventive self-management interventions, combined with a biopsychosocial conceptual framework and clinical knowledge, helped define the key features of the preliminary version. Then a mixed-methods design was used to assess the acceptability of iPACT-E-Trauma by clinicians and patients. RESULTS: The key features of the preliminary version of iPACT-E-Trauma were assessed as acceptable to very acceptable by clinicians and patients. After clinician assessment, intervention activities were simplified and session duration was reduced. Patient acceptability assessment of iPACT-E-Trauma led to the tailoring of key intervention features, based on determinants such as pain intensity and the implementation of self-management behaviors between intervention sessions. Web-based sessions were also developed to facilitate iPACT-E-Trauma delivery. CONCLUSION: This study outlines the process involved in the development of an intervention to prevent chronic pain in patients with lower extremity trauma. Relevant information is provided to nurses and interdisciplinary teams on a self-management intervention to prevent the transition from acute to chronic pain in the trauma population.

Asunto(s)

RESUMEN

BACKGROUND: Acute pain frequently transitions to chronic pain after major lower extremity trauma (ET). Several modifiable psychological risk and protective factors have been found to contribute to, or prevent, chronic pain development. Some empirical evidence has shown that interventions, including cognitive and behavioral strategies that promote pain self-management, could prevent chronic pain. However, the efficacy of such interventions has never been demonstrated in ET patients. We have designed a self-management intervention to prevent acute to chronic pain transition after major lower extremity trauma (iPACT-E-Trauma). OBJECTIVE: This pilot randomized controlled trial (RCT) aims to evaluate the feasibility and research methods of the intervention, as well as the potential effects of iPACT-E-Trauma, on pain intensity and pain interference with daily activities. METHODS: A 2-arm single-blind pilot RCT will be conducted. Participants will receive the iPACT-E-Trauma intervention (experimental group) or an educational pamphlet (control group) combined with usual care. Data will be collected at baseline, during iPACT-E-Trauma delivery, as well as at 3 and 6 months post-injury. Primary outcomes are pain intensity and pain interference with daily living activities at 6 months post-injury. Secondary outcomes are pain self-efficacy, pain acceptance, pain catastrophizing, pain-related fear, anxiety and depression symptoms, health care service utilization, and return to work. RESULTS: Fifty-three patients were recruited at the time of manuscript preparation. Comprehensive data analyses will be initiated in July 2017. Study results are expected to be available in 2018. CONCLUSIONS: Chronic pain is an important problem after major lower ET. However, no preventive intervention has yet been successfully proven in these patients. This study will focus on developing a feasible intervention to prevent acute to chronic pain transition in the context of ET. Findings will allow for the refinement of iPACT-E-Trauma and methodological parameters in prevision of a full-scale multi-site RCT. TRIAL REGISTRATION: International Standard Randomized Controlled Trial Number (ISRCTN): 91987302; http://www.controlled-trials.com/ISRCTN91987302 (Archived by WebCite at http://www.webcitation.org/6rR8G2vMs).

RESUMEN

OBJECTIVES: To assess the accuracy of a new radiographic measurement of the distal tibia and fibula on the lateral view of the ankle in normal adults: the anteroposterior tibiofibular (APTF) ratio. METHOD: Thirty adults without history of trauma or disease of the ankle were included. Bilateral ankles were x-rayed with a true lateral view of the ankle. A line from the anterior tibial physis scar to the posterior tibial cortex, passing by the intersection of the physis and the fibula anterior cortex, was drawn. The APTF ratio was calculated as the ratio of the anterior segment to the posterior segment. The measurements were done by 3 independent evaluators. Intra- and interobserver reliability was obtained using intraclass correlation. RESULTS: The APTF ratio was 0.94 ± 0.13 with a range of 0.63-1.31. Sex and age had no effect on the results. Inter- and intraobserver reliability was good to very good with an intraclass correlation between 0.6 and 0.8. A strong correlation between the left and the right APTF ratio was observed (r = 0.501 and P = 0.001). CONCLUSION: The distal tibiofibular joint anatomy in the sagittal plane can be accurately assessed with a new reliable radiographic measurement, the APTF ratio. The reduction of this joint during surgery can be confirmed with a true lateral view of the ankle. The anterior fibula cortex crosses the tibial physeal scar at the center of the line crossing this point and the anterior cortex of the tibia at the level of the physeal scar in the normal ankle.

Asunto(s)

RESUMEN

The authors reported the case of a 27-year-old man who sustained an irreducible postero-lateral traumatic dislocation of the hip with capsular and labral entrapment. Initial X-rays showed only a small acetabular fragment. After two attempts to reduce the hip with muscle paralysis under general anaesthesia failed, the patient was treated by immediate open reduction through a postero-lateral approach. Surgical exploration of the hip revealed a small osteochondral fragment attached to a large piece of labrum and capsule, clogging the acetabulum. The femoral head crossed over the torn capsule with a buttonhole effect. These elements were relieved, the bone fragment was fixed with a 2 mm screw and the capsule was repaired. At the 10-year follow-up, the functional outcome was excellent with a Harris score of 100 points and no signs of necrosis or osteoarthritis. The authors propose a literature review of this uncommon lesion.

Asunto(s)

RESUMEN

In designing a study protocol relating to hip fracture treatment and outcomes, it is important to select appropriate outcome instruments. Before beginning the process of instrument selection, investigators must gain a comprehensive understanding of the condition of interest and have a thorough knowledge of the expected benefits and harms of the proposed intervention. Adequate evidence of an intervention's effectiveness includes indication of impact on the patient's health. We provide a brief discussion about different ways that health and health measurement have been defined, including the International Classification of Function, Disability and Health (ICF), health-related quality of life (HRQOL), and cost-to-benefit analyses. We outline important properties (reliability, validity, sensitivity to change, and responsiveness) that a measurement instrument must demonstrate before being considered an acceptable means to measure outcome. Potential outcome measures relevant to patients with hip fracture are summarized, and important points to consider in the selection of outcome measures for a hypothetical research question in a hip fracture population are discussed.

Asunto(s)

RESUMEN

OBJECTIVES: To evaluate the safety and functional outcome of a recently described surgical technique of percutaneous plating for proximal humerus fractures. DESIGN: Prospective clinical trial. SETTING: : Two urban Level 1 university trauma centers. PATIENTS: From February 2002 to December 2003, 34 consecutive patients underwent surgery by 5 trauma surgeons from 2 teaching hospitals. Twenty-seven patients had 1-year follow-up. INTERVENTION: The technique involved 2 minimal incisions with a lateral deltoid split and a more distal shaft incision. A proximal humerus-specific locking plate was implemented. MAIN OUTCOME MEASUREMENTS: DASH (disabilities of the arm, shoulder, and hand) and Constant-Murley evaluation scores were used for functional evaluation. The presence of complications was noted. RESULTS: Specifically, there were no axillary nerve injury injuries and no loss of reduction. The average Constant score at 1 year was 82 and the DASH score was 26. CONCLUSION: This study demonstrated that the functional outcome results correspond to a normal age-adjusted score signifying an acceptable result.

Asunto(s)

RESUMEN

In recent years, opening-wedge osteotomy has gained popularity. However, the complication rate reported is high. Opening-wedge osteotomy was modified to remedy the problems seen with the conventional technique including loss of correction, delayed healing, and patella infera. This biomechanical study evaluates the response of a new opening-wedge osteotomy in a static and dynamic mode of human cadavers. Results were compared to the stability of the conventional technique. Six preserved pairs of human cadaveric knees were tested. Specimens of the same pair were randomly assigned to either the modified or conventional osteotomy. Internal fixation was used to ensure precise correction and prevent bone collapse. Each tibia was loaded on a material testing system from 0 to 700 N for 10,000 cycles to simulate immediate full weight bearing in a walking individual. Specimens were then loaded to failure to determine ultimate load and stiffness of the construct. Displacement of the articular fragment and stiffness were measured during dynamic loading. Load to failure, displacement, and stiffness were measured during static testing. The modified osteotomy provided significantly greater stiffness (1392 N/mm) and smaller loss of correction (.68 mm) than the conventional osteotomy (741 N/mm; 1.76 mm) under cyclic loading conditions (P<.05). The modified retrotubercle osteotomy provides greater stiffness than the conventional osteotomy, increasing stability by 62% and minimizing loss of correction to <1 mm. The modified osteotomy eliminates the need for bone graft and provides additional strength to allow accelerated rehabilitation.

Asunto(s)

RESUMEN

PURPOSE: The goal of our study was to evaluate stability of internal fixation with a plate compared to external fixation in an opening wedge high tibial osteotomy model. Significance. To our knowledge, this is the only study to compare internal plate to external fixation in an opening wedge osteotomy model. The design of this cadaver study limits its direct application to clinical practice. MATERIAL AND METHOD: In each of the six pairs of fresh-frozen human cadaver knees one specimen was randomly assigned to internal plate fixation while the other was stabilized with an external fixation. The osteosynthesis plate incorporated a 12.5mm block that distracted the medial tibial cortices. Each knee was loaded on a mechanical testing machine to 700 N for 10,000 cycles to simulate immediate full weight bearing in a walking individual. SUMMARY OF RESULTS: The internal plate osteosynthesis provided significantly greater stiffness and smaller loss of correction (1.60mm) than the external fixation (3.22 mm) under cyclic loading condition (P<0.05). For static loading, the mean value of stiffness resulting in failure for the internal plate and external fixation, were respectively, 938 N/mm and 459 N/mm. Load to failure also showed two times greater stiffness in the plate osteosynthesis group. No hardware failure was observed in either construct. DISCUSSION AND CONCLUSION: Plate fixation was superior to external fixation in maintaining correction. However, progressive adjustment of the distraction with the external fixator allows precise "fine-tuning" during the healing process that is not possible with internal fixation.

Asunto(s)