Does Capsulectomy, Performed in Total Hip Arthroplasty With a Direct Anterior Approach Cause Knee Extension Strength Loss?

Study Overview
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Brief Summary
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Total hip arthroplasty (THA) has been successful in relieving pain and restoring function in patients with advanced arthritis of the hip joint. Increased focus on earlier recovery and decreased postoperative pain has improved overall satisfaction. However, there is still a gap between the clinical scores in objective surveys and patient satisfaction. Direct anterior approach total hip arthroplasty has a low dislocation rate, abductor strength restoration, acceleration, and cosmetic advantages. In this method, capsulotomy with repair or capsulectomy is applied as the preferences of surgeons. Therefore, this can cause both a decrease in hip flexion strength and a loss in knee extension strength. Our aim in this study is to reveal how much muscle loss was caused by comparing both methods with the intact side.

Detailed Description
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Published data assessing biomechanical performance after THR are sparse. The majority of studies assessing post-THR hip function using robotic dynamometry have focused on evaluating surgical outcomes and prosthetic selection. These studies provide insight regarding the strength deficits of older adults after THR. However, the data are not consistent, making it difficult to assess the nature of the deficit.

Official Title
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Does Capsulectomy, Performed in Total Hip Arthroplasty With a Direct Anterior Approach Cause Knee Extension Strength Loss?

Conditions
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Coxarthrosis, Muscle Weakness

Intervention / Treatment
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* Procedure: Capsulotomy with Repair
* Procedure: Capsuloectomy


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: All primary THA Exclusion Criteria: Secondary THA

Ages Eligible for Study
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Minimum Age: 45 Years
Maximum Age: 65 Years

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: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Capsulotomy with Repair<br>Repair after capsulotomy in direct anterior hip arthroplasty | Procedure: Capsulotomy with Repair<br>* Capsulotomy with Repair<br>|
| Active Comparator: Capsuloectomy<br>Capsuloectomy in direct anterior hip arthroplasty | Procedure: Capsuloectomy<br>* Capsuloectomy<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Muscle Weakness | Newton | 1 year | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Harris Hip Score | Score | 1 year | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Hip, Arthroplasty, Quadriceps strenght, Muscle Weakness, Knee, Flexion, Extension