Consequence of the Learning Curve in Direct Anterior Approach for Total Hip Replacement

Study Overview
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Brief Summary
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Background: Direct anterior approach to the hip (DAA) is being considered as one of the most promising minimally-invasive approaches in total hip arthroplasty (THA). Purpose of this study is to analyse influence of learning curve on clinical and radiographic outcome in direct anterior approach (DAA) for total hip replacement. Methods: The first 30 patients operated with DAA (group B) were compared to 39 patients operated by Hardinge approach (group A). Peri-and postoperative complications, Harris Hip Score (HHS), implant positioning, experienced pain and patient satisfaction were evaluated at a mean follow-up of 32 months.

Detailed Description
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Direct anterior approach to the hip (DAA) is being considered as one of the most promising minimally-invasive approaches in total hip arthroplasty (THA). Purpose of this study is to analyse influence of learning curve on clinical and radiographic outcome in direct anterior approach (DAA) for total hip replacement. Methods: The first 30 patients operated with DAA (group B) were compared to 39 patients operated by Hardinge approach (group A). Peri-and postoperative complications, Harris Hip Score (HHS), implant positioning, experienced pain and patient satisfaction were evaluated at a mean follow-up of 32 months.

Official Title
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Consequence of the Learning Curve in Direct Anterior Approach for Total Hip Replacement

Conditions
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Arthropathy of Hip, Surgery

Intervention / Treatment
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* Procedure: hip replacement


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Hip arthritis Exclusion Criteria: BMI>35
Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Hip direct anterior approach<br>Patients with hip arthritis | Procedure: hip replacement<br>* Total hip replacement<br>|
| Active Comparator: Lateral hip approach<br>Patients with hip arthritis | Procedure: hip replacement<br>* Total hip replacement<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Clinical outcome of direct hip approach | Harry's hip score, a clinical score used in orthopedic surgery to describe outcome of hip function | 32 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| radiological positioning of cup in the replaced hip | using standard x-ray of the hip placement of implants is measured in angles between the iliac line and component line for the cup | 32 months | 
| radiological positioning of the stem in replaced hip | using standard x-ray of the hip placement of implants is measured in angles between the axis of implant and femoral axis | 32 months |