Arthroscopy Association of Canada Position Statement on Exercise for Knee Osteoarthritis: A Systematic Review of Guidelines.

Background: Exercise is widely regarded to improve pain and function in patients with knee osteoarthritis (OA) through building supportive muscle mass, facilitating weight loss, and through the other beneficial effects associated with it.

Purpose: To explore literature that presents clinical guidelines for the use of exercise in the treatment of knee OA to inform an evidence-based position statement for the Arthroscopy Association of Canada.

Study Design: Position statement.

Biomechanical evaluation of extramedullary versus intramedullary fixation for reverse obliquity intertrochanteric fractures.

Objectives: This study evaluated the 135-degree hip screw, 95-degree hip screw, and intramedullary hip screw (IMHS) for fixation of reverse obliquity intertrochanteric fractures.

Methods: Twelve matched pairs of human femora (mean age 64 years) were obtained. Osteotomies were created in left femurs at a 33-degree angle, running inferolaterally from the lesser trochanter to mimic reverse obliquity intertrochanteric fractures.