Subakromiales Impingement bei einem Tennisspieler verursacht durch eine synoviale Chondromatose

Abstract

On the one hand synovial chondromatosis is a rare disorder and usually involves the knee and hip but rarely the shoulder joint. On the other hand bursal causes of impingement are rare too. We report a case of synovial osteochondromatosis presenting as chronic impingement syndrome in a 44 year old hobby tennis player. In the course of four years impingement problems and a "tumorous" growth on the outer surface attacked attraction to the patient. An MRI presented several nodular structures with sclerosis in the anteriomedial region of the shoulder joint. The mass was completely removed by operative treatment. The histological result showed a synovial chondromatosis with chronical synovitis. After the operative exstirpation of the calcified bodies the patient had no discomfort for 15 months and is now able to play tennis again.

In major joint diseases the human synovium retains its potential to form repair cartilage

“…However in these studies it was not known if the activity level of this differentiation potential relates to a level of differentiation as it is present in a normal human synovial joint, or not; the appropriate control group was obviously not available. Moreover, the synovial tissue of FAI joints tends to form spontaneously cartilage-like tumors 27 – 29 , which may also have been a confounding factor.…”