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document
Minimally invasive compared with traditional transgluteal approach for total hip arthroplasty : a comparative gait analysis . BACKGROUND Minimally invasive total hip arthroplasty is purported to allow an improved and faster rehabilitation in the immediate postoperative period because of reduced soft-tissue damage compared with total hip arthroplasty performed with use of a standard approach . In the present study , a minimally invasive approach was compared with a traditional standard approach in terms of the effect on gait kinematics as demonstrated with gait analysis and electromyography . METHODS Twenty randomized patients who underwent a primary total hip replacement with use of a minimally invasive modified Watson-Jones approach ( minimally invasive group ) were compared with a group of twenty patients who underwent a total hip arthroplasty with use of a standard transgluteal Hardinge approach ( standard group ) . All patients received the same cementless implant , inserted with use of standard instruments , and all operations were performed by a single , experienced surgeon . The patients were evaluated with use of three-dimensional gait analysis and dynamic electromyograms at three time points : preoperatively , ten days postoperatively , and twelve weeks postoperatively . Temporospatial and joint-kinematic parameters were evaluated . RESULTS There were no significant differences between the two groups with regard to the temporospatial variables of velocity , cadence , step length , and stride length at any tested time point . With regard to the range of motion of the operatively treated hip , the minimally invasive group had a smaller decrease at the ten-day time point in comparison with the standard group . However , this finding was not significant . The reduction in the range of motion was mainly caused by reduced hip extension . A compensatory increase in the pelvic tilt was observed in both groups . One patient in the standard group showed a positive Trendelenburg gait ten days postoperatively ; it had disappeared completely at the twelve-week time point . CONCLUSIONS With regard to gait kinematics in the early postoperative period ( three months ) , the present study showed no significant benefit for patients who underwent a total hip arthroplasty through a minimally invasive Watson-Jones approach in comparison with those who were managed with a standard transgluteal approach .
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Intervention_Surgical
primary total hip replacement with use of a minimally invasive modified Watson-Jones approach ( minimally invasive group
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Intervention_Surgical
total hip arthroplasty with use of a standard transgluteal Hardinge approach ( standard group ) .
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Intervention_Surgical
cementless implant
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Outcome_Other
gait
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Outcome_Other
velocity , cadence , step length , and stride length
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Outcome_Other
range of motion
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Outcome_Other
range of motion
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Outcome_Other
pelvic tilt
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Outcome_Other
Trendelenburg gait
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Participant_Condition
total hip arthroplasty
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Participant_Sample-size
Twenty
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Participant_Condition
primary total hip replacement
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Participant_Sample-size
twenty
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Participant_Condition
total hip arthroplasty
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Participant_Condition
standard transgluteal approach