Strong evidence was found for a decrease in operative time and intraoperative blood loss for MIS THA , with no difference in complication rates and risk for acetabular outliers .
Strong evidence exists that there is no difference in physical functioning , measured either by question naires or by gait analysis .
Moderate evidence was found for a shorter length of hospital stay after MIS THA .
Conflicting evidence was found for a positive effect of MIS THA on pain in the early postoperative period , but that effect diminished after three months postoperatively .
Strong evidence was found for an increase in operative time for CAS THA , and limited evidence was found for a decrease in intraoperative blood loss .
Furthermore , strong evidence was found for no difference in complication rates , as well as for a significantly lower risk for acetabular outliers .
Conclusions The results indicate that MIS THA is a safe surgical procedure , without increases in operative time , blood loss , operative complication rates and component malposition rates .
However , the beneficial effect of MIS THA on functional recovery has to be proven .
The results also indicate that CAS THA , though result ing in an increase in operative time , may have a positive effect on operative blood loss and operative complication rates .
More importantly , the use of CAS results in better positioning of acetabular component of the prosthesis
Background Both minimally invasive surgery ( MIS ) and computer-assisted surgery ( CAS ) for total hip arthroplasty ( THA ) have gained popularity in recent years .
We conducted a qualitative and systematic review to assess the effectiveness of MIS , CAS and computer-assisted MIS for THA .
Comparison of the responsiveness of the Harris Hip Score with generic measures for hip function in osteoarthritis of the hip
Objective : To compare responsiveness of the Harris Hip Score with generic measures ( that is , the Short Form-36 ( SF-36 ) , and a test of walking speed and pain during walking ) in patients with osteoarthritis ( OA ) of the hip . Method : The first 75 cases within the population of a r and omised clinical trial on manual therapy and exercise therapy  were selected for secondary analysis . Experienced ( self reported ) recovery by the patients after treatment ( five weeks ) was used as an external criterion for clinical ly relevant improvement . Responsiveness was evaluated by comparing responsiveness ratios and receiver operating characteristic curves . Results : The responsiveness ratio for the Harris Hip Score was high ( 1.70 ) compared with walking speed ( 0.45 ) , pain during walking ( 0.66 ) , and the subscales of the SF-36—“bodily pain ” ( 0.42 ) and “ physical functioning ” ( 0.36 ) . The area under the curve also was highest for the Harris Hip Score ( 0.92 ) compared with walking speed ( 0.71 ) , pain during walking ( 0.73 ) , and the SF-36 subscales — bodily pain and physical functioning ( both 0.66 ) . Conclusion : The Harris Hip Score  is more responsive than the test of walking speed , pain , and subscales for function of the SF-36 in patients with OA of the hip . The Harris Hip Score seems to be a suitable instrument to evaluate change in hip function in patients with OA of the hip
Strong evidence was found for a decrease in operative time and intraoperative blood loss for MIS THA , with no difference in complication rates and risk for acetabular outliers .
Strong evidence exists that there is no difference in physical functioning , measured either by question naires or by gait analysis .
Moderate evidence was found for a shorter length of hospital stay after MIS THA .
Conflicting evidence was found for a positive effect of MIS THA on pain in the early postoperative period , but that effect diminished after three months postoperatively .
Strong evidence was found for an increase in operative time for CAS THA , and limited evidence was found for a decrease in intraoperative blood loss .
Furthermore , strong evidence was found for no difference in complication rates , as well as for a significantly lower risk for acetabular outliers .
Conclusions The results indicate that MIS THA is a safe surgical procedure , without increases in operative time , blood loss , operative complication rates and component malposition rates .
However , the beneficial effect of MIS THA on functional recovery has to be proven .
The results also indicate that CAS THA , though result ing in an increase in operative time , may have a positive effect on operative blood loss and operative complication rates .
More importantly , the use of CAS results in better positioning of acetabular component of the prosthesis
Background Both minimally invasive surgery ( MIS ) and computer-assisted surgery ( CAS ) for total hip arthroplasty ( THA ) have gained popularity in recent years .
We conducted a qualitative and systematic review to assess the effectiveness of MIS , CAS and computer-assisted MIS for THA .