Pre-operative and Intra-operative Factors Affecting Post-operative Range of Motion in Total Knee Arthroplasty: A Prospective Clinical and Radiological Study.

IF 1.1 4区医学 Q3 ORTHOPEDICS

Indian Journal of Orthopaedics Pub Date : 2025-05-02 eCollection Date: 2025-07-01 DOI:10.1007/s43465-025-01373-x

Yuvarajan Palanisamy, Arjun R Prasad, Rajshekhar Kollar, Sugumar Natarajan, David V Rajan

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引用次数: 0

Abstract

Purpose: This study aimed to identify the key factors influencing post-operative range of motion after total knee arthroplasty. The primary determinants investigated were preoperative range of motion, intra-operative posterior condylar offset (PCO), posterior condylar offset ratio (PCOR), posterior tibial slope (PTS), and joint line height (JLH).

Methods: This prospective study enrolled 68 patients. PCO, PCOR, PTS, and JLH were assessed radiologically in both pre-operative and post-operative X-rays. The knee range of motion and Oxford Knee Score (OKS) were assessed at 2-year follow-up. Statistical analysis, including Student's t test and correlation analysis, was employed to compare and correlate pre-operative and post-operative parameters.

Results: Pre-operative range of motion correlated with post-operative range of motion (p = 0.001). The study did not find a significant correlation when post-operative range of motion was correlated with PCO (p = 0.923), PCOR (p = 0.278), PTS (p = 0.604), and JLH (p = 0.488). Post-operative changes in PCO (p = 0.001) and PTS (p = 0.001) when compared to pre-operative values were significant. PCOR (p = 0.468) and JLH (p = 0.108) had no significant correlation with their respective pre-operative values. Pre-operative OKS: 18.23 ± 8.53, Post-operative OKS: 40.92 ± 4.0 (p = 0.001). Pre-operative maximum flexion: 93.31° ± 7.73°, post-operative maximum flexion angle: 111.83° ± 9.69° (p = 0.001).

Conclusion: Amongst the measured parameters, pre-operative range of motion was the primary factor influencing the range of motion attained after total knee arthroplasty (TKA).

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影响全膝关节置换术后活动范围的术前和术中因素：一项前瞻性临床和放射学研究。

目的：探讨影响全膝关节置换术后活动范围的关键因素。研究的主要决定因素是术前活动范围、术中后髁偏移量（PCO）、后髁偏移比（PCOR）、胫骨后斜率（PTS）和关节线高度（JLH）。方法：本前瞻性研究纳入68例患者。术前和术后x线对PCO、PCOR、PTS和JLH进行影像学评估。在2年的随访中评估膝关节活动范围和牛津膝关节评分（OKS）。采用统计学分析，包括Student’st检验和相关分析，对术前和术后参数进行比较和相关分析。结果：术前活动度与术后活动度相关（p = 0.001）。术后活动范围与PCO （p = 0.923）、PCOR （p = 0.278）、PTS （p = 0.604）、JLH （p = 0.488）相关，研究未发现有显著相关性。与术前相比，术后PCO （p = 0.001）和PTS （p = 0.001）的变化具有显著性。PCOR （p = 0.468）和JLH （p = 0.108）与其术前值无显著相关性。术前OKS: 18.23±8.53，术后OKS: 40.92±4.0 （p = 0.001）。术前最大屈曲度：93.31°±7.73°，术后最大屈曲角：111.83°±9.69°（p = 0.001）。结论：在测量参数中，术前活动范围是影响全膝关节置换术后活动范围的主要因素。

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来源期刊

Indian Journal of Orthopaedics ORTHOPEDICS-

CiteScore

1.80

自引率

0.00%

发文量

185

审稿时长

9 months

期刊介绍： IJO welcomes articles that contribute to Orthopaedic knowledge from India and overseas. We publish articles dealing with clinical orthopaedics and basic research in orthopaedic surgery. Articles are accepted only for exclusive publication in the Indian Journal of Orthopaedics. Previously published articles, articles which are in peer-reviewed electronic publications in other journals, are not accepted by the Journal. Published articles and illustrations become the property of the Journal. The copyright remains with the journal. Studies must be carried out in accordance with World Medical Association Declaration of Helsinki.