Joint stiffness after primary knee arthroplasty increases risk of contralateral knee arthroplastyZhang Shu.Department of Orthopaedics, the First People in Dongcheng District of Beijing, Beijing 100075, China

doi:10.3877/cma.j.issn.1674-134X.2019.03.018

Abstract

Abstract:

Objective

To analysisthe relationship between joint stiffness after primary total knee arthroplasty (TKA) and contralateral TKA.

Methods

Cases of total kneearthroplasty in theorthopaedics department of xx People’s Hospital from January 2016 to December 2017 were retrospectively analyzed. According to the Western Ontario and McMaster Universities Osteoarthritis index (WOMAC) stiffness scale 12 months after TKA, cases were divided into non-stiff group and stiff group. Survival analysis was performed and log-rank, Wilcoxon test were taken, P<0.05 was considered statistically significant.

Results

In the non-stiff group and the stiff group, the contralateral knee TKA was performed after the primary TKA (31.1±1.4) months and (23.9±1.5) months, respectively. There was a statistically significant difference in the second contralateral TKA interval between the two groups (log-rank test χ²=26.130, P<0.05; Wilcoxon test χ²=18.286, P<0.05).

Conclusion

In the patients with stiff joints after the primary TKA, the time to the contralateral TKA will be earlier than that with non-stiff. joints.

Key words: Arthroplasty, replacement, knee, Recovery of function, Reoperation

Shu Zhang. Joint stiffness after primary knee arthroplasty increases risk of contralateral knee arthroplastyZhang Shu.Department of Orthopaedics, the First People in Dongcheng District of Beijing, Beijing 100075, China[J]. Chinese Journal of Joint Surgery(Electronic Edition), 2019, 13(03): 365-367.

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References 17

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组别	例数	性别(男/女)	初次TKA时
组别	例数	性别(男/女)	年龄[岁，(±s)]	BMI(±s)	WOMAC评分(±s)
非僵硬组	23	9/14	64.1±3.6	24.5 ±1.5	144.9±16.9
僵硬组	36	13/23	63.0±2.8	24.0±1.2	152.8±15.8
统计值	－	χ²＝0.055	t ＝1.317	t ＝0.915	t ＝－1.832
P值	－	>0.05	>0.05	>0.05	>0.05

组别	例数	性别(男/女)	初次TKA时
组别	例数	性别(男/女)	年龄[岁，(±s)]	BMI(±s)	WOMAC评分(±s)
非僵硬组	23	9/14	64.1±3.6	24.5 ±1.5	144.9±16.9
僵硬组	36	13/23	63.0±2.8	24.0±1.2	152.8±15.8
统计值	－	χ²＝0.055	t ＝1.317	t ＝0.915	t ＝－1.832
P值	－	>0.05	>0.05	>0.05	>0.05

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