Objective To assess the effect of combining two rehabilitation models during early-stage muscle reinforcement in patients having undergone total hip arthroplasty (THA). Methodology Our study was carried out on a total of 81 unilateral THA patients aged between 61 and 84. Forty-one control group (CG) patients participated in a standard rehabilitation (SR) program, whereas the 40 patients in the test group (TG) performed both SR and isometric exercises with electromyographic feedback. We performed three tests in each group, on the day before surgery (T 1) and then three days (T 2) and seven days (T 3) after surgery. These tests enabled measurement of the integrated electromyographic peak (EMG ipeak) for the gluteus medius, the peak voluntary isometric strength (VIS peak) of each leg (i.e., both the operated and nonoperated sides) and the operated gluteus medius’ maintenance time at 50% of the EMG ipeak during isometric exercises with electromyographic feedback. Results For the operated gluteus medius, the TG's EMG ipeak values were similar to those measured in the CG ( P > 0.05) at T 1 and T 2. Likewise, the VIS peak values for the corresponding legs at T 1 and T 2 did not differ significantly. However, at T 3, the EMG ipeak of the gluteus medius and the leg VIS peak on the operated side increased in both groups and were higher in the TG than in the CG ( P < 0.001). Compared with the CG, the TG also displayed a longer maintenance time at 50% of the EMG ipeak for the operated gluteus medius during isometric exercises with electromyographic feedback. Conclusion This preliminary study showed that a combination of two rehabilitation models leads to faster post-THA recovery than the application of SR alone.