The meta- analysis of the current evidence base showed that minimally invasive THA is associated with a significantly increased risk of transient lateral femoral cutaneous nerve palsy ( p = 0.006 ) with no significantly better outcome
Over the past decade , minimally invasive surgery has gained popularity as a means of optimising early postoperative rehabilitation and increasing patient satisfaction and cosmesis following  total hip arthroplasty ( THA ) .
However , this surgical exposure has also been associated with increased risk of iatrogenic nerve injury and implant mal-positioning due to limited visibility compared to conventionally larger surgical incisions .
The purpose of this meta- analysis was to compare the outcomes of these two surgical exposures .
[Advantages of minimal invasive total hip replacement in the early phase of rehabilitation].
UNLABELLED In arthroplasty the term " minimal invasive " not only refers to the length of the skin incision but more so to its soft tissue and thereby muscle-protecting features . STUDY AIM The aim of this study is to compare the early postoperative mobilisation and rehabilitation of the different surgical approaches in cementless total hip arthroplasty . METHODS 27 patients underwent a total hip replacement ( Trilogy cup , MAYO stem ) via a ventral minimal invasive approach ( one incision technique ) ( MIS group ) . 23 patients underwent a total hip replacement with the same implant via a anterolateral transgluteal approach ( st and ard group ) . We evaluated the Harris Hip Score ( HHS ) , the visual analogue scale ( VAS ) for pain and patient satisfaction preoperatively as well as 3 days , 10 days , 6 weeks and 3 months postoperatively . RESULTS After 3 and 10 days the MIS group showed better scores for pain , gait and mobilisation as well as for the overall HHS compared to the st and ard group . These differences could not be shown 6 weeks postoperatively . The MIS group had a significantly higher rate of complications with 22 % transient impairment of the lateral cutaneous nerve . CONCLUSION The patients of the MIS group showed a better mobilisation and rehabilitation during the early postoperative period . This can be attributed to the lessened intraoperative damage of to soft tissue and especially muscle damage . Due to the increased rate of nerve irritations , we modified our surgical approach . The minimal invasive approach to modern hip joint arthroplasty remains a non-st and ard technique . Compared to the st and ard approach it carries additional risks ( like nerve damage and malpositioning of the implants and thus should remain in the h and s of the experienced orthopaedic surgeon in specialised orthopaedic centres
The meta- analysis of the current evidence base showed that minimally invasive THA is associated with a significantly increased risk of transient lateral femoral cutaneous nerve palsy ( p = 0.006 ) with no significantly better outcome
Over the past decade , minimally invasive surgery has gained popularity as a means of optimising early postoperative rehabilitation and increasing patient satisfaction and cosmesis following  total hip arthroplasty ( THA ) .
However , this surgical exposure has also been associated with increased risk of iatrogenic nerve injury and implant mal-positioning due to limited visibility compared to conventionally larger surgical incisions .
The purpose of this meta- analysis was to compare the outcomes of these two surgical exposures .