The Role of Flexion Contracture on Outcomes in Primary Total Knee Arthroplasty

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

Research output: Contribution to journalArticle

107 Scopus citations


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 5622 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° 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.

Original languageEnglish (US)
Pages (from-to)1092-1096
Number of pages5
JournalJournal of Arthroplasty
Issue number8
StatePublished - Dec 1 2007



  • extension
  • flexion contracture
  • knee
  • range of motion
  • total knee arthroplasty

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

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