Radiographic Analysis of Selective Ligament Sectioning at the Carpal Scaphoid: a Cadaver Study.

Publication/Presentation Date

11-1-1990

Abstract

Although scapholunate diastasis with rotatory subluxation of the scaphoid (stage I perilunar instability determined by Mayfield's classification) has been studied by several investigators, the exact contribution of the supporting ligaments is still being defined. We designed and executed an experimental study using six fresh-frozen cadaver specimens to demonstrate the radiographic changes seen on standard and stress wrist radiographs that correlate with the sequential sectioning of the scapholunate stabilizing ligaments. The radioscapho-lunate ligament, the palmar scapholunate interosseous ligament, the dorsal scapholunate interosseous ligament, and the radiocapitate ligament were sectioned sequentially to simulate a progressive wrist injury caused by an extension, intercarpal supination and ulnar deviation force. The results showed significant ligamentous injury must occur before commonly used radiographic limits are exceeded. The lateral scapholunate angle most closely reflected the progressive nature of this injury.

Volume

15

Issue

6

First Page

855

Last Page

862

ISSN

0363-5023

Disciplines

Medicine and Health Sciences | Orthopedics | Other Medical Specialties | Surgery

PubMedID

2269773

Department(s)

Department of Surgery

Document Type

Article

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