[The significance of bone spurs at the base of the 2d metacarpal bone in the pathogenesis of joint arthrosis of the base of the thumb].
A causal correlation is proved between an outgrowing osseous spur at the Os metacarpale II and the rhizarthrosis. The midhand bone of the thumb is connected by a ligament with the base of the Os metacarpale II. High tensile stresses elongate the ligament and lead to its partial ossification. The ligament looses its essential function and the thumb subluxates radially.
D005096:Exostoses / Q000150:complications* / Q000000981:diagnostic imaging; D005260:Female; D005384:Finger Joint / Q000000981:diagnostic imaging*; D006801:Humans; D007592:Joint Diseases / Q000209:etiology; D008023:Ligaments, Articular; D008662:Metacarpophalangeal Joint / Q000000981:diagnostic imaging*; D008663:Metacarpus / Q000000981:diagnostic imaging*; D008875:Middle Aged; D011859:Radiography; D013933:Thumb
Zur Bedeutung des Knochenspornes an der Basis des zweiten Mittelhandknochens für die Pathogenese der Daumensattel-gelenksarthrose.