Singh Shailendra, Chaurasia Anmol, Shantanu Kumar, Mohan Ravindra, Chaudhary Sripal, Kumar Deepak, Singh Arpit
Department of Orthopaedic Surgery, King George's Medical University, Lucknow, IND.
Cureus. 2023 Jul 3;15(7):e41338. doi: 10.7759/cureus.41338. eCollection 2023 Jul.
The measurement of the posterior tibial slope (PTS) angle is crucial for various knee surgeries such as total knee replacement, high tibial osteotomy, and anterior cruciate ligament reconstruction. This hospital-based study aimed to determine the average PTS angle in the knee joints of the North Indian population and provided valuable data to aid knee surgeries in this region.
An analysis of 200 plain X-ray films, specifically the true lateral view of both knees in 20-degree flexion, was conducted on participants who exhibited skeletal maturity with no arthritis, tumours, or previous knee surgeries. The PTS measurements were performed manually. The data were analyzed statistically by matching them with variables such as gender, age, laterality, and body mass index (BMI).
The study revealed the following findings for the posterior tibial slope in a section of the North Indian population: there was no significant laterality difference (right knee: 12.76±2.35°, left knee: 12.55±2.46°); no notable sexual dimorphism (males: right knee - 12.79±2.65°, left knee - 12.25±2.65°, females: right knee - 12.73±2.11°, left knee - 12.77±2.30°). However, as age advanced, there were significant differences observed (PTS: 14.27±1.28° and 13.84±1.80° in the 18-40 years age group, 11.36±1.76° and 11.31±1.97° in the 41-60 years age group, 10.32±2.82° and 10.56±3.04° in the >60 years age group for the right and left knee, respectively). No significant correlation was found with BMI (PTS: 13.12±3.13° and 12.59±3.14° for BMI <25, 12.88±2.15° and 12.80±2.34° for BMI 25-30, 12.00±2.09° and 11.66±2.99° for BMI >30 in the right and left knee, respectively).
The study demonstrated significant variations in the posterior tibial slope based on age, emphasizing the need for individualized treatment in knee surgeries. The research provided valuable insights into normal PTS values specific to the North Indian population, offering regional data to inform knee surgery procedures.
胫骨后倾坡度（PTS）角度的测量对于全膝关节置换、高位胫骨截骨术和前交叉韧带重建等各种膝关节手术至关重要。这项基于医院的研究旨在确定北印度人群膝关节的平均PTS角度，并提供有价值的数据以辅助该地区的膝关节手术。
对200张普通X线片进行分析，具体为对20度屈曲位的双膝关节正侧位片进行分析，这些参与者骨骼成熟，无关节炎、肿瘤或既往膝关节手术史。PTS测量采用手动方式。通过将数据与性别、年龄、左右侧别和体重指数（BMI）等变量进行匹配，进行统计学分析。
该研究揭示了北印度部分人群胫骨后倾坡度的以下结果：左右侧别无显著差异（右膝：12.76±2.35°，左膝：12.55±2.46°）；无明显性别差异（男性：右膝 - 12.79±2.65°，左膝 - 12.25±2.65°，女性：右膝 - 12.73±2.11°，左膝 - 12.77±2.30°）。然而，随着年龄增长，观察到显著差异（18 - 40岁年龄组右膝和左膝的PTS分别为14.27±1.28°和13.84±1.80°，41 - 60岁年龄组分别为11.36±1.76°和11.31±1.97°，>60岁年龄组分别为10.32±2.82°和10.56±3.04°）。与BMI无显著相关性（BMI<25时右膝和左膝的PTS分别为13.12±3.13°和12.59±
