Prognostic Factors of Modified Thompson Quadricepsplasty for the Stiff Knee

Soo Bong Hahn; Kwang Won Park; Seung Hwan Lee; Yun Rak Choi; Ho Jung Kang

doi:10.4055/jkoa.2009.44.6.593

Journal List > J Korean Orthop Assoc > v.44(6) > 1012952

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Hahn, Park, Lee, Choi, and Kang: Prognostic Factors of Modified Thompson Quadricepsplasty for the Stiff Knee

Original Article

Journal of the Korean Orthopaedic Association

Journal of the Korean Orthopaedic Association 2009; 44(6): 593-598.

Published online: 21 December 2009

DOI: https://doi.org/10.4055/jkoa.2009.44.6.593

Prognostic Factors of Modified Thompson Quadricepsplasty for the Stiff Knee

Soo Bong Hahn, M.D., Kwang Won Park, M.D., Seung Hwan Lee, M.D., Yun Rak Choi, M.D., Ho Jung Kang, M.D.

Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, Korea.

Correspondence to Soo Bong Hahn, M.D. Department of Orthopaedic Surgery, Yonsei University College of Medicine, Severance Hospital, 134, Sinchon-dong, Seodaemun-gu, Seoul 120-752, Korea. Tel: +82.2-2228-2180, Fax: +82.2-363-1139, sbhahn@yuhs.ac

Received 28 January 2009 Accepted 29 August 2009

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.

Keywords: Stiff knee, Modified Thompson quadricepsplasty, Prognostic factor

Figures and Tables

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.

Table 1

Cause of the Stiff Knee

Fx., Fracture.

Table 2

Summary of Preoperative Factors

Table 3

Summary of Postoperative Outcomes

Table 4

Univariate Analysis

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