Direct Anterior Total Hip Arthroplasty (THA), in Versus Outpatients : A Prospective Monocentric Study in Rennes University Hospital.

Study Overview
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Brief Summary
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The main objective is to show that cumulative length of stay over the first 45 post operative days (i.e. : primary length of stay and readmission) is significantly lower in the outpatients group than in the inpatients group

Official Title
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Direct Anterior Total Hip Arthroplasty (THA), in Versus Outpatients : A Prospective Monocentric Study in Rennes University Hospital.

Conditions
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Direct Anterior Total Hip Arthroplasty

Intervention / Treatment
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* Procedure: Direct Anterior Total Hip Arthroplasty


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Unilateral primary total hip arthroplasty for hip osteoarthritis, primary or secondary osteoarthritis (dysplasia or post-traumatic) or osteonecrosis Good enough understanding of outpatient management and patient adherence to post-operative instructions Sufficient patient complicance to medical orders Living and hygiene conditions, at least, equivalent to the ones the hospital provides To be of age Non opposition to the protocole participation Outpatients group : - Patient schedulded to undergo outpatient THA Inpatients group : - Patient schedulded to undergo inpatient THA because of not fiting the following items : Less than an hour distance of a Health Center that provides appropriate care with regard to the surgery Rapid access to a phone Designated driver and caretaker available (at least the first night after discharge from the hospital) after the procedure Or turning down outpatient THA Exclusion Criteria: Anaesthetic point of view : ASA physical status ≥ 3 and : unstabilize disease with appropriate treatment or lack of preoperative mutual agreement between anesthesiologist and surgeon or not inconsiderable interaction between the operation and the disease or its treatment Pre-operative Hb < 12 (♀) < 13 (♂) g/L (NB : no Hb control before discharge except if excessive blood loss ; Hb < 10g/L contraindicates outpatient surgery) Opioid chronic pre-operative therapy or opioid addiction Surgical point of view : Ambulatory pre-operative status requiring use of two crutches or walking frame / distance walked < 30 m THA procedure for femoral neck fracture requiring Additional operative technic needed Adult safeguarding. Exclusion criteria applies to all in and outpatients.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| outpatients group<br>Patient schedulded to undergo outpatient Direct Anterior Total Hip Arthroplasty | Procedure: Direct Anterior Total Hip Arthroplasty<br>* Direct Anterior Total Hip Arthroplasty<br>|
| inpatients group<br>Patient schedulded to undergo inpatient Direct Anterior Total Hip Arthroplasty | Procedure: Direct Anterior Total Hip Arthroplasty<br>* Direct Anterior Total Hip Arthroplasty<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Cumulative lenght of stay | Cumulative lenght of stay ( ie : the sum of the days of hospitalization corresponding to the initial hospitalization and readmissions if there are any) | 45 days before surgery |