Experimental Elbow Instability After Transection of the Medial Collateral LigamentS$OSJBJERG, J., O.; OVESEN, J.; NIELSEN, S.Clinical Orthopaedics and Related Research: May 1987 - Volume 218 - Issue - p 186–190 Section II GENERAL ORTHOPAEDICS: PDF Only Free Abstract Author InformationAuthors In 12 osteoligamentous autopsy elbow preparations, the stability of the elbow was independent of the collateral ligament with flexion of less than 20° and greater than 120°. The anterior part of the collateral medial ligament was the prime stabilizer of the elbow in this range of motion, i.e., the flexion range of function. The maximum valgus and internal rotatory instability after transection of the medial collateral ligament, 20.2° and 21.0°, respectively, were found at elbow flexions from 60° to 70°. Selective repair or reconstruction of the anterior part of the elbow medial collateral ligament may prove to be effective in the treatment of acute or chronic elbow instability. From the Biomechanics Laboratory, Orthopaedic Hospital, Randersvej, DK-8200 Aarhus, Denmark. © Lippincott-Raven Publishers.