Possible load after initial implantation of a total hip arthroplasty (THA): comparison of minimal invasive anterolateral approach with direct lateral transgluteal approach according to Bauer.

Purpose: This study examined whether surgical approach-minimally invasive anterolateral or transgluteal-affects ground reaction force symmetry in THA patients during early rehabilitation.

Methods: Data from 37 THA patients (14 transgluteal (TGL) approach, 23 minimally invasive (MIS) approach) were compared to a control group of 50 non-operated adults. Walking speed, cadence, and ground reaction force were measured with Insole sensors over a 30-m walk.

Results: Significant differences in ground reaction force symmetry emerged within and between groups throughout rehabilitation. Early in rehab, MIS patients showed better symmetry, speed, stance duration, and walking ability than TGL patients. The TGL group differed more from non-operated individuals than the MIS group did.

Conclusion: Individual rehabilitation concepts specific to the surgical approach with the inclusion of modern visual biofeedback systems have long been called for. And in light of such clear results they should be developed as quickly as possible.