Evaluation of posterior tibial slope in high tibia osteotomy by MCL sparing method in patients with braced foot

Naghdi, Soroosh; Karimi Mobarake, Mahmud; Sadeghifar, Amirreza; Sheibani, Mohamad; Azarsina, Salman; Mohammadhosseiniazar, Peyman

doi:10.22034/ijos.2024.340851.1023

Evaluation of posterior tibial slope in high tibia osteotomy by MCL sparing method in patients with braced foot

Document Type : Original Article

Authors

soroosh naghdi ¹

mahmud karimi mobarake ²

amirreza sadeghifar ²

mohamad sheibani ³

salman azarsina ³

peyman mohammadhosseiniazar ⁴

¹ Resident of Professor of Orthopedic Surgery, Department of Orthopedics, Shahid Bahonar Hospital, Afzalipour School of Medicine, Kerman University of Medical Sciences, Kerman, Iran

² Associate Professor of Orthopedic Surgery, Department of Orthopedics, Shahid Bahonar Hospital, Afzalipour School of Medicine, Kerman University of Medical Sciences, Kerman, Iran

³ Associate Professor of Orthopedic Surgery, Department of Orthopedics, Shahid Madani Hospital, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran

⁴ resident of orthopaedic department ,shahid madani hospital,alborz university of medical science

https://doi.org/10.22034/ijos.2024.340851.1023

Abstract

Introduction:
Genu varum is a type of knee deformity. In this deformity lower limb mechanical axis, moves inward to the knee centre. In genu varum mechanical axis usually lies through the medial of the knee joint. In this deformity, the patient's lower limbs become bow shape. One of the best techniques for genu varum correction is high tibial osteotomy that this procedure can change some index include posterior tibial slope (PTS), and insall-salvati index (ISI).
Method:
Our study was a cross-sectional study performed on patients with genu varum before and after a step cut of the high tibia osteotomy. The method of examining the posterior tibia slope was that before and after the high tibia osteotomy by Step Cut-MCL sparing method, a simple radiographic image in true lateral view (True lateral) was taken from the knee of patients. The significance level of P Value <0.05 was considered.
Result:
In this study 21 patients ( 11 male and 10 female ) were enrolled. Mean age was 36.19 ± 10.17 year-old. Mean PTS pre operation was 11.48 ± 1.94 degrees and post operation was 11.48 ± 2.15 degrees.
Conclusion:
In our study, PTS increased after HTO that this increase was not statistically significant difference between men and women. In addition, we showed that this increase did not have significant relationship with age and BMI. In the present study, Insall-Salvati index showed no significant difference before and after the treatment.

Keywords

HTO

MCL sparing

PTS

Genu varum

Subjects