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High-flexion Total Knee Arthroplasty Improves Flexion of Stiff Knees

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Publisher Wiley
Date 2010 Oct 5
PMID 20890698
Citations 14
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Abstract

Purpose: High-flexion knee prosthesis designs are generally thought to be of benefit only in patients with a satisfactory preoperative flexion angle. The aim of the study was to evaluate whether high-flexion designs were indeed worthless in osteoarthritis patients with severe preoperative flexion limitation.

Methods: The postoperative maximum flexion was compared in osteoarthritis patients with a preoperative maximum flexion of 100° or less, using LPS and LPS-flex implants (NexGen®; Zimmer, Warsaw, IN) in total knee arthroplasties. Data on 39 knees in the LPS group and 41 in the LPS-flex group, with a minimum of 2 years of follow-up, were reviewed retrospectively, focused on the postoperative maximum flexion.

Results: Two years after operation, the LPS-flex group had a mean postoperative maximum flexion of 131±10° (range, 105-140°), which was significantly higher than the 121±12° (range, 95-140°) in the LPS group (P<0.001). In the LPS-flex group, about half of the knees (n=18, 44%) could achieve a maximum flexion of 140° postoperatively, but in the LPS group only five knees (13%) achieved a maximum flexion of 140°.

Conclusion: Despite a different period of the operation between groups, this study suggested that osteoarthritis patients with severe preoperative flexion limitation could achieve more postoperative gain in flexion when a high-flexion prosthesis was used, compared to the flexion obtained using a standard prosthesis.

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Rhee S, Hong S, Suh J Knee Surg Relat Res. 2015; 27(3):156-62.

PMID: 26389068 PMC: 4570950. DOI: 10.5792/ksrr.2015.27.3.156.


References
1.
Parsley B, Engh G, Dwyer K . Preoperative flexion. Does it influence postoperative flexion after posterior-cruciate-retaining total knee arthroplasty?. Clin Orthop Relat Res. 1992; (275):204-10. View

2.
Kim Y, Sohn K, Kim J . Range of motion of standard and high-flexion posterior stabilized total knee prostheses. A prospective, randomized study. J Bone Joint Surg Am. 2005; 87(7):1470-5. DOI: 10.2106/JBJS.D.02707. View

3.
Kim Y, Choi Y, Kwon O, Kim J . Functional outcome and range of motion of high-flexion posterior cruciate-retaining and high-flexion posterior cruciate-substituting total knee prostheses. A prospective, randomized study. J Bone Joint Surg Am. 2009; 91(4):753-60. DOI: 10.2106/JBJS.H.00805. View

4.
Lavernia C, DApuzzo M, Rossi M, Lee D . Accuracy of knee range of motion assessment after total knee arthroplasty. J Arthroplasty. 2008; 23(6 Suppl 1):85-91. DOI: 10.1016/j.arth.2008.05.019. View

5.
Li G, Most E, Sultan P, Schule S, Zayontz S, Park S . Knee kinematics with a high-flexion posterior stabilized total knee prosthesis: an in vitro robotic experimental investigation. J Bone Joint Surg Am. 2004; 86(8):1721-9. DOI: 10.2106/00004623-200408000-00017. View