J Korean Orthop Assoc.  2009 Dec;44(6):593-598. 10.4055/jkoa.2009.44.6.593.

Prognostic Factors of Modified Thompson Quadricepsplasty for the Stiff Knee

• Hahn SB
• Park KW
• Lee SH
• Choi YR
• Kang HJ

• KMID: 2186284
• DOI: http://doi.org/10.4055/jkoa.2009.44.6.593

Abstract

PURPOSE
This study evaluated the prognostic factors of modified Thompson quadricepsplasty for a stiff knee.
MATERIALS AND METHODS
From February 1987 to February 2007, 38 knees of 38 patients were managed with modified Thompson quadricepsplasty for a stiff knee. Thirty three males and 5 females were enrolled with a mean age of 36 years. The average follow-up duration was 92 months (range, 18 to 133 months). The most common cause of the stiff knee was a fracture around the knee in 33 cases. Multivariate logistic regression analysis was performed to evaluate the prognostic factors.
RESULTS
Multivariate analysis showed that the gain of ROM after surgery was negatively correlated with the ROM before surgery (p<0.0001), and flexion contracture at the last follow up was positively correlated with the initial flexion contracture (p<0.0001).
CONCLUSION
In a stiff knee, modified Thompson quadricepsplasty should be considered as soon as possible if the patient cannot gain an acceptable ROM through conservative management. More improvement in the ROM can be obtained in those with a more severe limitation of motion.

Keyword

Stiff knee; Modified Thompson quadricepsplasty; Prognostic factor

MeSH Terms

Contracture
Female
Follow-Up Studies
Humans
Knee
Logistic Models
Male
Multivariate Analysis

Figure

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  Fig. 1 Postoperative photographs show full range of motion of right knee at standing (A) and squatting (B) position after twelve months from the operation.

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