Functional Outcomes of Quadriceps Tendon versus Hamstring Tendon Autograft using Suspensory Fixation at Femoral and Tibial Sites for Primary Anterior Cruciate Ligament Reconstruction: A Randomised Controlled Study

Author:

Khatri Ronak Yashwantbhai,Patil Vijaykumar,Kulkarni Shrikant,Naik Sandeep,Nandi Santosh

Abstract

Introduction: Arthroscopic Anterior Cruciate Ligament (ACL) reconstruction using hamstring tendon autografts is commonly used in day-to-day practice. Recently, the quadriceps tendon has been considered as a graft choice for primary ACL reconstruction due to its reliable graft size and resistance to rupture. The available literature comparing Quadriceps and Hamstring autografts in ACL reconstruction is limited. Therefore, the present study was conducted to compare the functional outcomes of these autografts using suspensory fixation at the femoral and tibial sites. Aim: To compare the functional outcomes of quadriceps tendon versus hamstring tendon autografts for primary ACL reconstruction. Materials and Methods: A randomised controlled study was conducted at Department of Orthopaedics, BLDE’s Shri BM Patil Medical College and Research Centre, Vijayapur, Karnataka, India, from January 2021 to April 2023. Thirty-four patients were included in the study and randomised into two groups: one group was operated with a quadriceps tendon graft, and the other group used a hamstring tendon autograft. Both groups underwent surgery using suspensory fixation, and postoperative rehabilitation was similar. Functional outcomes (assessed using Lysholm and International Knee Documentation Committee (IKDC) scores), return to preinjury activity, and complications were evaluated. Statistical analysis was performed using Statistical Package for Social Sciences (SPSS) version 20.0. The Mann-Whitney U test was applied to compare pre- and postoperative functional outcomes (Lysholm and IKDC scores) at 6, 12, and 24 months, with a significance level of p<0.05. Results: Out of 34 patients, 27 (79%) were male and 7 (21%) were female. The follow-up period ranged from a minimum of 24 months to a maximum of 26 months. The mean Lysholm score in the hamstring group increased from 47 preoperatively to 92 at six months postoperatively, while in the quadriceps group, it increased from 46 preoperatively to 90 at six months postoperatively. The reliability and validity of the IKDC score for the hamstring group also increased from 46 preoperatively to 79 at six months, and for the quadriceps group, it increased from 44 preoperatively to 78 at six months. A total 31 of the cases (91%) returned to their preinjury activity, while 3 patients (9%) (2 from the hamstring group and 1 from the quadriceps group) experienced knee stiffness, which restricted their ability to squat and sit cross-legged. There were no significant differences in Lysholm and IKDC scores between the hamstring and quadriceps tendon autografts at 6, 12, and 24 months postoperatively. Conclusion: Patients undergoing single bundle ACL reconstruction have comparable functional outcomes with either hamstring or quadriceps grafts at the end of the 2-year follow-up period, with no specific graft site complications. The soft tissue quadriceps tendon autograft can be considered as an equally viable option for graft selection.

Publisher

JCDR Research and Publications

Subject

Clinical Biochemistry,General Medicine

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