Minimally invasive total hip arthroplasty: a randomized controlled prospective trial
Mazoochian, F., Weber, P., Schramm, S. et al.Hip
Introduction
Advantages of minimally invasive total hip arthroplasty (THA) are controversially discussed.
Method
In this prospective study 51 patients (52 hips) were randomly allocated to a classical lateral or a minimally invasive approach (modification of the Hardinge-approach). Operating time, intraoperative blood loss, postoperative hemoglobin, muscle enzymes CK and myoglobin were recorded. Radiologically the positioning of the prosthesis was analyzed. WOMAC- and Harris Hip Score (HHS) were assessed preoperatively, at discharge, at 6 weeks and 3 months.
Results
In the minimally invasive group there was a shorter length of surgery, the scores in the WOMAC and HHS were slightly better at discharge and at the 3 months- examination, myoglobin-rise was slightly less. The positioning of the prosthesis was good in both groups. Minimally invasive THA led to a quicker recovery, at 3 months postoperative there was still a slight difference to the standard group.
Conclusion
If these slight differences subside has to be examined in studies with a longer follow-up.
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