Rotator cuff tear such symptoms frequently are diagnosed with failed rotator cuff syndrome. According to an article published by the American Academy of Orthopaedic Surgeons, arthroscopic procedures produce "satisfactory results" more than 90 percent of the time. Dr. Eric J. Strauss and the other authors wrote that 6-8 percent of patients have "incompetent" rotator cuffs, because their repaired tendons either fail to heal or develop additional tears. In some cases, the symptoms are due to cervical spine disease, featuring neck pain that radiates into the shoulder; suprascapular neuropathy, a nerve disorder; subacromial impingement, common in athletes and others who make repetitive overhead movements;
Posterior compartment of the forearm De Quervain's syndrome is a medical condition when the synovial sheath surrounding tendons in the first extensor tendon compartment becomes inflamed, so called tenosynovitis. The tendons of the abductor pollicis longus and the extensor pollicis brevis run narrower due to the thickening of the synovial sheath, which causes pain when extending and moving the thumb outward. Carpal tunnel syndrome is a condition when the median nerve is compressed as it passes through the carpal tunnel, which causes pain, numbness and tingling. The presence of an additional tendon may result in a condition called fourth compartment syndrome. Supernumerary tendons are common