Postoperative Hip Precautions After Total Hip Arthroplasty Via the Posterior Approach: A Prospective Randomized Trial

Study Overview
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Brief Summary
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The purpose of this study is to determine if hip precautions, which are instructions that limit functional use of a hip replacement after surgery, affect the rate of dislocation in the first six weeks after primary total hip replacement surgery. The impact of hip precautions on a patient's return to activities of daily living and overall patient satisfaction will also be investigated. The overall cost effectiveness of hip precautions will be determined.

Detailed Description
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This study examines the necessity of postoperative hip precautions in patients after primary total hip arthroplasty via the posterior approach. Precautions are instructions that limit the functional use of the hip and are given for the first six weeks after surgery, with the goal of preventing an instability event resulting in dislocation. The hip precautions that will be investigated in this study are: no hip flexion past 90º, no crossing the legs, and no twisting at the waist.

Official Title
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Are Postoperative Hip Precautions Necessary After a Total Hip Arthroplasty Via the Posterior Approach: A Prospective Randomized Trial

Conditions
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Osteoarthritis, Degenerative Joint Disease

Intervention / Treatment
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* Other: Hip Precautions
* Other: No Hip Precautions


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients undergoing a primary total hip arthroplasty via the posterior approach by participating attending surgeons at this institution Index diagnosis of noninflammatory arthritis Patients must be able to understand and comply with study procedures Exclusion Criteria: Allergy or intolerance to the study materials History of previous surgeries on the affected joint other than arthroscopy; i.e. revision THA or open surgeries

Ages Eligible for Study
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Minimum Age: 18 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: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: No Hip Precautions<br>Patients will not be prescribed hip precautions in the first 6 weeks after surgery. The hip precautions that will no longer be prescribed are: no hip flexion past 90º, no crossing the legs, and no twisting at the waist. | Other: No Hip Precautions<br>* Patients will not be prescribed hip precautions in the first 6 weeks after surgery. The hip precautions that will no longer be prescribed are: no hip flexion past 90º, no crossing the legs, and no twisting at the waist.<br>|
| Active Comparator: Hip Precautions<br>Patients will receive the following hip precautions: no hip flexion past 90º, no crossing the legs, and no twisting at the waist for the first six weeks after surgery. | Other: Hip Precautions<br>* Hip precautions are functional limitations of the hip replacement prescribed to patients for the first six weeks after surgery and are no hip flexion past 90º, no crossing the legs, and no twisting at the waist.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Dislocation | Incidence of dislocation of the total hip arthroplasty will be recorded for both treatment groups. | 6 weeks after surgery | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Activities of Daily Living | The time from surgery to return to activities of daily living will be measured for both treatment groups. This includes return to activities of bathing, return to work, and return to driving. | 1 year after surgery | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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total hip arthroplasty, hip precautions, posterior approach