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Rigshospitalet - a part of Copenhagen University Hospital
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Posterolateral elbow joint instability: the basic kinematics

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  • Bo Sanderhoff Olsen
  • Jens Ole Søjbjerg
  • K K Nielsen
  • M T Vaesel
  • Michel Dalstra
  • O Sneppen
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Thirty-five osteoligamentous elbows were included in a study on the kinematics of posterolateral elbow joint instability during the pivot shift test (PST) before and after separate ligament cuttings in the lateral collateral ligament complex (LCLC). Division of the annular ligament or the lateral ulnar collateral ligament caused no laxity during the PST. Division of the lateral collateral ligament caused maximal laxity of 4 degrees and 23 degrees during forced PST in valgus and external rotation (supination), respectively. Cutting of the LCLC at the ulnar or the humeral insertion was necessary for any PST stressed elbow joint laxity to occur. Total division of the LCLC induced a maximal laxity of 7.9 degrees and 37 degrees during forced PST in valgus and external rotation (supination), respectively. This study suggests the lateral collateral ligament to be the primary soft tissue constraint to PST stress and the annular ligament and the lateral ulnar collateral ligament to be only secondary constraints. This study indicates that the integrity of the medial collateral elbow ligaments should be evaluated during forced valgus in pronation or neutral forearm rotation. Furthermore an isometric lateral collateral ligament reconstruction was shown to correct the joint laxity introduced by total LCLC transection.

Original languageEnglish
JournalJournal of Shoulder and Elbow Surgery
Volume7
Issue number1
Pages (from-to)19-29
Number of pages11
ISSN1058-2746
Publication statusPublished - 3 Apr 1998

    Research areas

  • Aged, Aged, 80 and over, Biomechanical Phenomena, Cadaver, Elbow Joint, Female, Humans, Joint Instability, Ligaments, Articular, Male, Middle Aged, Journal Article

ID: 50039614