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- K Nakamichi and S Tachibana.
- Department of Orthopaedic Surgery, Toranomon Hospital, Tokyo, Japan.
- J Hand Surg Am. 1998 Nov 1;23(6):1015-24.
AbstractHistology of the transverse carpal ligament and flexor tenosynovium was investigated in 166 wrists from 130 patients with idiopathic carpal tunnel syndrome. Nine wrists from 9 controls were used for comparison. In the patients, 73.5% of the ligament and 56.0% of the tenosynovium showed normal histology. In the remaining specimens, the ligament showed mucoid change (17.5%), amyloid deposits (7.8%), inflammation (3.0%), and chondrometaplasia (2.4%), and the tenosynovium showed fibrosis (25.3%), edema (7.2%), inflammation (10.2%), amyloid deposits (8.4%), and vascular hypertrophy (4.8%). The majority of these changes were mild in degree and the pathophysiology did not appear to be meaningful. We conclude that in idiopathic carpal tunnel syndrome, the ligament and tenosynovium often show normal histology and there are no typical or consistent changes with which idiopathic carpal tunnel syndrome can be associated.
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