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Journal of Bone and Joint Surgery - British Volume, Vol 74-B, Issue 2, 297-299
Copyright © 1992 by British Editorial Society of Bone and Joint Surgery

Articles

Kinematics of semi-constrained total elbow arthroplasty

SW O'Driscoll, KN An, S Korinek, and BF Morrey

Department of Orthopaedic Surgery, Mayo Clinic, Rochester, Minnesota 55905.

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 degrees (+/- 1.5 degrees) varus/valgus laxity in the cadaver joints. This increased slightly after total elbow arthroplasty to 3.8 degrees (+/- 1.4 degrees). 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.


This article has been cited by other articles:


Home page
 J Bone Joint Surg BrHome page
J. M. Aldridge III, N. R. Lightdale, W. J. Mallon, and R. W. Coonrad
Total elbow arthroplasty with the Coonrad/Coonrad-Morrey prosthesis: A 10- TO 31-YEAR SURVIVAL ANALYSIS
J Bone Joint Surg Br, April 1, 2006; 88-B(4): 509 - 514.
[Abstract] [Full Text] [PDF]


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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General