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English Wikipedia
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The anatomy of the metacarpo-phalangeal joints, with observations of the aetiology of ulnar drift Wise KSJ Bone Joint Surg Br 1975[Nov]; 57 (4): 485-90One hundred normal fingers were dissected and arthrographs obtained by injection of chromopaque-gelatin mixture, allowing comparison between the radiographic and macroscopic configuration of the synovial capsule. Synovial recesses protruding from each side of every metacarpo-phalangeal joint were found in relation to the collateral ligaments and corresponding exactly with the site of radiological erosions. A group of bursae lying on the superficial aspect of collateral ligaments were also demonstrated. A rudimentary intra-articular meniscus was found. The results of examination of the insertions of the interossei showed differences from traditional descriptions. The cause of rheumatoid deformity was suggested to be the rheumatoid process arising in the lateral recesses and lateral bursae, weakening the collateral ligaments, which give way in the directions of the deforming forces. These are derived from the long flexor tendons, which were shown to exert an ulnar and volar strain on the metacarpo-phalangeal joint of every finger during grip.|Arthritis, Rheumatoid/*complications[MESH]|Biomechanical Phenomena[MESH]|Bursa, Synovial/anatomy & histology[MESH]|Finger Joint/*anatomy & histology[MESH]|Hand Deformities, Acquired/*etiology[MESH]|Humans[MESH]|Joint Dislocations/etiology[MESH]|Ligaments/anatomy & histology[MESH]|Spasm/complications[MESH]|Stress, Mechanical[MESH]|Ulna[MESH] |
