Biomechanical evaluation of spiral fracture in human metacarpal using chicken humerus model.

Introduction: Animal bones have been used as a model to mimic human bones for investigation of fracture patterns and fixation techniques. This study aims to investigate the effects of torsional forces of varying speeds on the spiral fracture in human metacarpal using a chicken humerus model.

Materials And Methods: Thirty fresh-frozen chicken humerus bones were dissected and equally divided into three groups.

Cruciate retaining and posterior stabilized total knee arthroplasty in severe varus osteoarthritis knee: A match-pair comparative study in an Asian population.

BackgroundPosterior stabilized (PS) total knee arthroplasty (TKA) is advocated in severe varus osteoarthritic (OA) knees as the posterior cruciate ligament posed challenges in gap balancing. However, there is scarcity in the literature to illustrate the superiority of PS TKA over cruciate retaining (CR) TKA. Our study aims to compare the outcomes between CR and PS TKAs in patients with severe varus OA knees.

Piriformis Pyomyositis Presenting as Migratory Hip to Knee Pain: A Case Report.

Case: The authors report a case of piriformis pyomyositis in a teenage female patient with fever and left hip pain. Her pain migrated to the knee with concurrent near resolution of hip pain. Imaging revealed an abscess in the left piriformis with pus tracking along the sciatic nerve sheath.

Posterior sloping angle of the capital femoral physis in slipped capital femoral epiphysis has poor clinical utility and should not guide treatment on prophylactic fixation.

Background: Prophylactic pinning of the uninvolved side after unilateral slipped capital femoral epiphysis (SCFE) is controversial as it balances increased surgical risks against the possibility of protecting a normal hip from initial slip and deformity. A posterior sloping angle (PSA) of greater than 12-14.5° has been proposed by various authors as a treatment threshold to predict for contralateral hip progression and prophylactic pinning.

Restoring a functional and mobile shoulder following reconstruction of the sternoclavicular joint with a free vascularized fibular flap.

Infection of the sternoclavicular joint (SCJ) is rare and often missed at early stage. In extensive disease with bony and soft tissue destruction, radical excision is indicated. The loss of SCJ results in exposure of vital structures of the anterior mediastinum and instability of the shoulder girdle.