Impact of Reverse Shoulder Arthroplasty Design and Patient Shoulder Size on Moment Arms and Muscle Fiber Lengths in Shoulder Abductors
Reverse shoulder arthroplasty (RSA) increases the moment arm of the deltoid, however there is limited knowledge on the accompanying changes in muscle architecture that play a role in muscle force production. The purpose of our study is to use a geometric shoulder model to evaluate the anterior deltoid, middle deltoid, and supraspinatus regarding 1) differences in moment arms and muscle-tendon lengths in small, medium, and large native shoulders, and 2) impact of three RSA designs on moment arms, muscle fiber lengths, and force-length (F-L) curves.
Osteochondritis dissecans of the knee: What to know
Osteochondritis dissecans of the knee may not cause any symptoms, but some people may experience pain and swelling. Engaging in competitive sports may contribute to its development.
Is Walking Good for Hip Arthritis?
Hip arthritis results from the breakdown of cartilage within your hip joints, causing hip stiffness and pain that can increase with inactivity, standing, and walking. Although walking can be uncomfortable and difficult with hip arthritis, walking is also incredibly important for maintaining the mobility and strength of your hips.
Time for a new knee? Ask these questions first
Gather as much information as possible to make an informed decision about a total knee replacement.
Implant survivorship 99 percent for young hip arthroplasty patients
Patients younger than 65 years undergoing total hip arthroplasty (THA) have 99 percent implant survivorship at eight years and have low rates of revision and readmission, according to a study presented at the annual meeting of the American Academy of Orthopaedic Surgeons, held from March 7 to 11 in Las Vegas.