Testing Autologous matrix-induced chondrogenesis for hip arthroscopy
Official title: AMIC Compared With Microfracture for Focal Articular Cartilage Damage of the Hip
Autologous MatRix-Induced ChondrogenEsis ComPared With Microfracture for Focal ArtIcular CaRtilage Damage of the Hip (REPAIR): A Pilot Randomized Controlled Trial
- Phase 1
- 2 groups
- One site, in Hamilton
- Recruiting
Interventions
- Medical procedure
Autologous matrix-induced chondrogenesis (AMIC)
AMIC is a novel approach in which the microfracture technique has been enhanced by the use of a type I/III collagen matrix (Chondro-Gide®; Geistlich Pharma AG, Wolhusen, Switzerland). In this single-step procedure, the matrix is placed over the defect to stabilize the fragile blood clot that arises from microfracture and to provide infrastructure for repair tissue formation. Essentially, the matrix covers the defect and serves as a protective shield that contains the cells and minimizes the impact of shear forces when moving the hip on the delicate blood clot. At the same time, it functions as the roof of a biological chamber that forms over the defect. The biocompatible collagen material provides an environment for cell growth and is replaced by native tissue over time.
Canadian Sites (1)
1 of 1 recruiting
- Recruiting
McMaster University
Hamilton, Ontario
Eligibility Criteria
See who this study is looking for26 criteria
The trial’s own eligibility text, word for word from the registry. Only the trial site can say who takes part.
Inclusion
- +All patients aged 18-55 years
- +Hip pain lasting 6 months or more with no relief from documented non-operative modalities
- +Focal articular cartilage defects of the acetabulum on MRI, confirmed to be full thickness (International Cartilage Regeneration and Joint Preservation Society (ICRS) grade 3 or 4) during arthroscopic examination
- +Focal acetabular articular cartilage lesions measuring between 3 cm2 and 25 cm2 on MRI and confirmed on arthroscopic examination
- +Patient agrees to participate in the study-specific postoperative rehabilitation protocolProtocolThe detailed plan a study must follow.Read more →
- +Patient can speak, read, and understand the language of the siteTrial siteA hospital or clinic where a study is actually run.Read more →
- +Patient has provided informed consentInformed consentThe process of being told what taking part involves, then choosing freely.Read more →
Exclusion
- −Known hypersensitivity or allergy to porcine collagen
- −Cartilage defects of the femoral head
- −Traumatic chondral injury of the hip from a single event
- −Presence of advanced osteoarthritis (Tonnis grade 3) or any other acute or chronic inflammatory joint disease
- −Acute or chronic infection at the surgical siteTrial siteA hospital or clinic where a study is actually run.Read more →
- −Evidence of hip dysplasia (i.e., lateral centre edge angle \< 20˚)
- −Evidence of acetabular over coverage such as coxa profunda or coxa protrusion
- −Immunosuppressive or anti-proliferative medication use
- −Chronic pain syndromes
- −Significant medical co-morbidities (requiring assistance for activities of daily living (ADLs))
- −History of paediatric hip disease
- −Uncontrolled diabetes
- −Contraindications to MRI imaging (e.g. claustrophobia)
- −Patient is involved in ongoing legal or workplace claims
- −Patient is incarcerated
- −Patient who will likely have problems, in the judgement of the investigatorPrincipal investigatorThe doctor or researcher responsible for running the study at a site.Read more →, with maintaining follow-upFollow-upContinued check-ins after the treatment part is finished.Read more →
- −Any other reason(s) the investigator feels is relevant for excluding the patient
- −Patient is pregnant or breastfeeding
- −Previous surgery on the study hip
In plain language
Assembled directly from this trial’s registry record. Every sentence traces to a field below — nothing here is generated or interpreted.
What this study is
This study is testing a treatment for a condition.
Phase 1Phase 1The earliest stage of human testing, in a small group, focused on safety.Read more → — an early safety study in a small group, checking how it is tolerated and at what dose.
From the trial registry
Built from these fields:
- designModule.designInfo.primaryPurpose
- designModule.phases
Who receives what
There are 2 groups in this study.
Group A, the comparison group, receives Autologous matrix-induced chondrogenesis (AMIC).
Registry label: A: Microfracture
Group B receives Autologous matrix-induced chondrogenesis (AMIC).
Registry label: B: Autologous matrix-induced chondrogenesis (AMIC)
From the trial registry
Built from these fields:
- armsInterventionsModule.armGroups[].label
- armsInterventionsModule.armGroups[].type
- armsInterventionsModule.armGroups[].interventionNames
How the study is run
Which group you would be placed in is decided by chance, like a coin flip — not by you and not by your doctor.
Neither you nor the study team would know which group you are in until the study ends.
From the trial registry
Built from these fields:
- designModule.designInfo.allocation
- designModule.designInfo.maskingInfo.masking
Is there a placebo?
This study does not list a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group.
One group receives an existing treatment, so the two can be compared.
From the trial registry
Built from these fields:
- armsInterventionsModule.armGroups[].type
- armsInterventionsModule.armGroups[].interventionNames
Who the study is looking for
The study lists an age range of 18 years to 55 years.
The study is open to people of any sex.
The study does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.
These are the criteria the study lists. Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part.
From the trial registry
Built from these fields:
- eligibilityModule.minimumAge
- eligibilityModule.maximumAge
- eligibilityModule.sex
- eligibilityModule.healthyVolunteers
How big and how long
The study aims to enrol about 40 people.
The study is currently expected to finish around January 2027.
The main measurement is taken over: Change from baselineBaselineYour starting measurements, taken before treatment begins.Read more → to 24 months post-surgery.
From the trial registry
Built from these fields:
- designModule.enrollmentInfo.count
- statusModule.completionDateStruct.date
- outcomesModule.primaryOutcomes[].timeFrame
What the study measures
Hip function and health-related quality of life using the International Hip Outcome Tool (iHOT-33) — measured over Change from baselineBaselineYour starting measurements, taken before treatment begins.Read more → to 24 months post-surgery.
From the trial registry
Built from these fields:
- outcomesModule.primaryOutcomes[].measure
- outcomesModule.primaryOutcomes[].timeFrame
Source: NCT05402072 on ClinicalTrials.gov. The full registry text is further down this page — this summary never replaces it.
Not medical advice. What do these terms mean?
What is being tested — in plain terms
About Autologous matrix-induced chondrogenesis (AMIC)Procedure
AMIC is a novel approach in which the microfracture technique has been enhanced by the use of a type I/III collagen matrix (Chondro-Gide®; Geistlich Pharma AG, Wolhusen, Switzerland). In this single-step procedure, the matrix is placed over the defect to stabilize the fragile blood clot that arises from microfracture and to provide infrastructure for repair tissue formation. Essentially, the matrix covers the defect and serves as a protective shield that contains the cells and minimizes the impact of shear forces when moving the hip on the delicate blood clot. At the same time, it functions as the roof of a biological chamber that forms over the defect. The biocompatible collagen material provides an environment for cell growth and is replaced by native tissue over time.
From the trial registry — its own words, unedited.
What a procedure is here: A surgery, technique or clinical procedure being studied.
Read the full explanation → · in clinical review
Common questions
Answered from this trial’s registry record. Where the record doesn’t say, these answers say so rather than filling the gap.
Am I eligible for this trial?
Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part. Concord cannot make that determination, and neither can any tool that has not examined you.
What the study lists: an age range of 18 years to 55 years.
The full inclusionInclusion criteriaThe things you must have or be for a study to consider you.Read more → and exclusion criteriaExclusion criteriaThe things that would prevent someone from taking part.Read more → are published on this page, exactly as the study team wrote them.
The useful next step is to bring this trial to your doctor. Answering a few questions first gives them something concrete to review.
From the trial registry
- eligibilityModule.minimumAge
- eligibilityModule.maximumAge
- eligibilityModule.eligibilityCriteria
Is there a placebo?
This study does not list a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group.
One group receives an existing treatment so the two can be compared.
From the trial registry
- armsInterventionsModule.armGroups[].type
Would I know which treatment I am getting?
Neither you nor the study team would know which group you are in until the study ends.
Which group you would be placed in is decided by chance, like a coin flip — not by you and not by your doctor.
From the trial registry
- designModule.designInfo.maskingInfo.masking
- designModule.designInfo.allocation
Who can join?
The study lists an age range of 18 years to 55 years.
It is open to people of any sex.
It does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.
Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can confirm whether a particular person can take part.
From the trial registry
- eligibilityModule.minimumAge
- eligibilityModule.maximumAge
- eligibilityModule.sex
- eligibilityModule.healthyVolunteers
How long would this take?
The study's main measurement is taken over: Change from baselineBaselineYour starting measurements, taken before treatment begins.Read more → to 24 months post-surgery.
The study as a whole is currently expected to finish around 2027-01-01.
How long any one person takes part can differ from the study length. The study team can tell you what the schedule looks like in practice.
From the trial registry
- outcomesModule.primaryOutcomes[].timeFrame
- statusModule.completionDateStruct.date
How many people are taking part?
The study aims to enrol about 40 people.
From the trial registry
- designModule.enrollmentInfo.count
Where is this happening?
This study lists one location: Hamilton, Ontario, Canada.
Sites can open and close during a study, so confirm with the team before travelling.
From the trial registry
- trial_locations
About This Trial
This is a pilot multi-centre RCT of 40 patients (ages 18-55 years, inclusive) undergoing primary hip arthroscopy with a focal articular cartilage defect of the acetabulum to compare the effect of using autologous matrix-induced chondrogenesis (AMIC) in comparison to microfracture on hip function, health-related quality of life, hip pain, cartilage regeneration, health utility, and any adverse events at 2 years. Follow-up will occur at 6 weeks, 6 months, 12 months, 18 months, and 24 months post-surgery.
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See if this trial could fit youThis page is for informational purposes only and does not constitute medical advice. Clinical trial eligibility can only be determined by the trial site after proper screening. Trial information is sourced from ClinicalTrials.gov and may not reflect the most current status. Always consult your healthcare provider before making decisions about clinical trial participation.