Hip surgery showdown: to stitch or not to stitch the capsule?
NCT ID NCT03372564
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at whether repairing the hip capsule (a layer of tissue around the joint) after keyhole hip surgery leads to better outcomes than leaving it unrepaired. About 250 adults aged 18 to 50 with hip pain from femoroacetabular impingement will be randomly assigned to one of two groups. The main goal is to see if hip function improves more at 6 months in the repair group.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Hip capsule repair (surgical procedure)
- What this could lead to
- If successful, this could show that repairing the hip capsule after arthroscopy leads to better hip function and less pain than leaving it unrepaired.
- What could go wrong
- This is a relatively small, early-stage trial (250 participants) and the results may not apply to all patients. There is also a risk that repairing the capsule could cause stiffness or other complications.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 250 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Nov 2017
- Expected to finish
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Dec 2040
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 50 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Criteria: Inclusion Criteria: 1. Adults aged 18 to 50 (men or women) 2. Hip pain for greater than 3 months that has failed non-operative treatment (physical therapy, NSAIDS, rest) 3. FAI documented on X-Ray or Magnetic resonance imaging (MRI) or magnetic resonance arthrogram (MRA) 4. Intraoperative labral repair or intact labrum 5. Informed consent from the participant 6. Ability to comprehend and speak English and the study design. Pre-operative exclusion criteria are the following: 1. Hypermobility/Ehlers-Danlos syndrome 2. Evidence of hip dysplasia (Center edge angle less than 20) 3. Previous surgery or trauma of the affected hip 4. Severe acetabular deformities such as circumferential labral ossification, acetabular protrusion20 5. Inflammatory/ autoimmune disease 6. Immunosuppressant medication 7. Significant medical co-morbidities such as uncontrolled diabetes, hypertension, congestive heart failure, etc. 8. Severe mental or physical disability requiring assistance in daily living 9. History of pediatric hip disease with previous operation (developmental dysplasia, Legg-Calve-Perthes, Slipped capital femoral epiphysis) 10. Presence of advanced hip osteoarthritis (Tonnis grade 2 or 3)18 11. Worker's compensation status 12. Intraoperative microfracture, or other procedure that would alter postoperative rehabilitation 13. Intraoperative labral debridement or labral reconstruction 14. Peri-trochanteric or deep gluteal space arthroscopy 15. Avascular necrosis Intra-operative exclusion criteria are the following: 1. Labral debridement 2. Labral reconstruction 3. Poor quality capsular tissue 4. Hyperlaxity based on excessive subluxation of the joint greater than 2 cm with standard 50 pounds of traction 5. Concomitant procedures such as MFX and iliopsoas lengthening will be included
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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American Hip Institute
Westmont, Illinois, 60559, United States
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Mayo Clinic in Arizona
Scottsdale, Arizona, 85259, United States
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Mayo Clinic in Rochester
Rochester, Minnesota, 55905, United States
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