Year: 2025 | Month: October-December | Volume: 10 | Issue: 4 | Pages: 42-47
DOI: https://doi.org/10.52403/ijshr.20250407
Functional Outcome of Total Knee Replacement with Medial Parapatellar and Subvastus Approach: A Comparative Study
Dr. Naveen Rathor1, Dr. Suresh Kumar Bhatnagar2, Dr. Saurabh Agrawal3
1Associate Professor, Department of Orthopedics, American International Institute of Medical Science, Udaipur, Rajasthan.
2Associate Professor, Department of Orthopedics, American International Institute of Medical Science, Udaipur, Rajasthan.
3Associate Professor, Department of Orthopedics, American International Institute of Medical Science, Udaipur, Rajasthan.
Corresponding Author: Dr. Naveen Rathor
ABSTRACT
Background & objectives: The purpose of this study was to determine differences in clinical outcome between subvastus and medial parapatellar approach in primary total knee arthroplasty. Methods: This is a prospective randomized study; we compared the clinical results of primary total knee arthroplasty using Subvastus and medial Parapatellar approaches in 80 patients. Patients are equally divided into both groups. Clinical outcome assessed using knee society score, time to return quadriceps function and visual analogue scale for pain.
Results:The mean follow-up time was 3 months. Pain improved significantly overtime in both groups. However, when comparing groups together, patients in subvastus group had better numerical visual analogue scale score at 3rd day postoperatively, nevertheless, no significant differences found at other follow up times (8.17, 5.98, 4.37, 2.84, 1.56 for medial parapatellar group and 8.23, 4.16, 4.0, 1.86, 1.17 for subvastus group at preoperative, 3rd day, 2, 6 and 12 weeks postoperative respectively for both groups). Subvastus group had earlier return of quadriceps function which was significant statistically. Knee society score improved significantly overtime without any significant differences when comparing both groups together at any time of the follow up periods.
Conclusions: Subvastus approach allowed earlier return of quadriceps function and less pain in the early postoperative day. In long term of functional outcome, none of two surgical approaches showed advantage over the other.
Keywords: Total knee arthroplasty, Knee society score, medial parapatellar, subvastus