Kinematics of semi-constrained total elbow arthroplasty

S. W. O'Driscoll, K. N. An, S. Korinek, B. F. Morrey

Research output: Contribution to journalArticle

98 Scopus citations

Abstract

We used 11 cadaver elbows and a three-dimensional electromagnetic tracking device to record elbow movements before and after implantation of a 'loose-hinged' elbow prosthesis (modified Coonrad). During simulated active motion there was a maximum of 2.7° ( ± 1.5°) varus/valgus laxity in the cadaver joints. This increased slightly after total elbow arthroplasty to 3.8° ( ± 1.4°). These values are lower than those recorded for the cadaver joints and for the prostheses at the limits of their varus/valgus displacements, indicating that both behave as 'semi-constrained' joints under physiological conditions. They suggest that the muscles absorb some of the forces and moments that in a constrained prosthesis would be transferred to the prosthesis-bone interface.

Original languageEnglish (US)
Pages (from-to)297-299
Number of pages3
JournalJournal of Bone and Joint Surgery - Series B
Volume74
Issue number2
DOIs
StatePublished - 1992

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

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