Source: Science Daily
Cartilage is filled with fluid — about 80% of the volume of the cartilage tissue — that plays the essential roles of supporting weight and lubricating joint surfaces. Loss of this fluid, called synovial fluid, results in a gradual decrease in cartilage thickness and increase in friction, which is related to the degradation and joint pain of osteoarthritis. Since cartilage is porous, fluid is readily squeezed out of the holes over time. Yet the symptoms associated with osteoarthritis usually take decades to develop. Researchers have now proposed a mechanism that explains how motion can cause cartilage to reabsorb liquid that leaks out.
Both hemiarthroplasty and total shoulder arthroplasty offered lasting pain relief, and range of motion was improved at the long-term follow-up; however, unsatisfactory Neer ratings were high, according to study results.
Year-round play contributes to 10-fold increase of ulnar collateral ligament reconstruction among youth
Source: Medical News Today
Baseball season is back and so are the injuries. But, elbow injuries, once seen as a problem for professional athletes, are becoming more prevalent among high school and middle school athletes due to increased play and competition at the youth level. Repetitive stress to a pitcher’s ulnar collateral ligament (UCL) – an important stabilizing ligament of the elbow joint – can lead to pain and eventually to the inability to pitch and throw.
Source: Medical Xpress
New University of Florida research suggests that a pitcher’s elbow injury could be linked to movement in the hips. Dr. Kevin W. Farmer, an assistant professor in the UF department of orthopaedics and rehabilitation, presented research at the March meeting of the American Academy of Orthopaedic Surgeons that shows a limited range of motion in a pitcher’s hips could be a risk factor in injury to his elbow.