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. 2007 Dec;22(8):1092-6.
doi: 10.1016/j.arth.2006.11.009.

The role of flexion contracture on outcomes in primary total knee arthroplasty

Merrill A Ritter  1 , Joseph D Lutgring, Kenneth E Davis, Michael E Berend, Jeffery L Pierson, R Michael Meneghini
Affiliations

The role of flexion contracture on outcomes in primary total knee arthroplasty

Merrill A Ritter et al. J Arthroplasty. 2007 Dec.

Abstract

This study examined the role that flexion contracture plays in postoperative outcomes after total knee arthroplasty using a retrospective database review. The relationships between preoperative and postoperative knee extension, walking ability, stair climbing ability, Knee Society scores, pain scores, and knee function scores were studied in 5,622 knees. A preoperative flexion contracture was associated with an increased incidence of a persistent postoperative flexion deformity. A postoperative flexion contracture was associated with poorer postoperative results. Furthermore, a postoperative hyperextension deformity of greater than 10 degrees was associated with an increased risk of suboptimal pain and Knee Society scores. Knee extension deformities play a substantial detrimental role in the functional outcome of primary total knee arthroplasty.

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