ABSTRACT
BACKGROUND: Medial parapatellar approach has become the standard technique for total knee arthroplasty. However, recent studies have reported superior results in functional recovery using midvastus approach. OBJECTIVE: To evaluate the early functional outcomes of medial parapatellar and midvastus approaches. METHODS: This was a prospective, randomized, double-blind, and controlled trial. Fifty patients receiving total knee arthroplasty were randomized into two groups: medial parapatellar approach and midvastus approach. The same type of implants was used in both groups. The Visual Analogue Scale scores were recorded. The range of motion, quadriceps strength and proprioception were assessed at 3 and 6 weeks after surgery. RESULTS AND CONCLUSION: (1) The Visual Analogue Scale scores at rest and in active in the midvastus approach group were significantly lower than those in the medial parapatellar approach group. (2) The average quadriceps strength in the midvastus approach group was significantly better than that in the medial parapatellar approach group. (3) The postoperative quadriceps proprioception in the midvastus approach group was better than that in the medial parapatellar approach group. The range of motion was similar in both groups. (4) Therefore, during early rehabilitation, the midvastus approach is superior to the medial parapatellar approach, and no adverse effects associated with this method are observed.