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.
Treatments for shin splints include home remedies, activity modification, medications, and physical therapy. In rare cases, a healthcare provider may recommend procedures such as prolotherapy (an injectable treatment) and extracorporeal shock wave therapy (ESWT) (a noninvasive treatment) for shin splints.
The neck and shoulders are complex and interconnected areas, and medical problems that affect one often affect the other, as well. Pain and dysfunction from injuries or conditions that impact the joints, muscles, and other structures can easily spread from the neck to the shoulder(s) and from the shoulder(s) to the neck.
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.
The study, of nearly 4,000 former National Football League (NFL) players, found that Black men reported more intense, more debilitating pain than their white counterparts. They were also more likely to suffer from depression, anxiety or fatigue -- and those problems were often related to their pain levels.