Actively Recruiting
JUPITER 4.0 - Risk Factors for Failure of Isolated Medial Patellofemoral Ligament Reconstruction
Led by Hospital for Special Surgery, New York · Updated on 2026-02-13
850
Participants Needed
16
Research Sites
256 weeks
Total Duration
On this page
Sponsors
H
Hospital for Special Surgery, New York
Lead Sponsor
A
American Orthopaedic Society for Sports Medicine
Collaborating Sponsor
AI-Summary
What this Trial Is About
The goal of this observational study is to learn about the outcomes of medial patellofemoral ligament (MPFL) reconstruction for the treatment of recurrent patellar instability. The main questions it aims to answer are: * What are the risk factors for recurrent patellar instability after MPFL reconstruction? * What functional outcomes do patients report after MPFL reconstruction? Participants undergoing MPFL reconstruction will answer survey questions about their knee and activity level 1 year and 2 years after surgery.
CONDITIONS
Official Title
JUPITER 4.0 - Risk Factors for Failure of Isolated Medial Patellofemoral Ligament Reconstruction
Who Can Participate
Eligibility Criteria
You may qualify if you...
- 10-35 years old
- Recurrent patellar instability with at least one episode defined as either (1) a dislocated patella requiring reduction in the emergency department or (2) a convincing history for dislocation, associated with full giving way, and the following physical findings: (a) hemarthrosis or effusion, (b) tenderness along the medial retinaculum, and (c) apprehension when laterally directed force was applied to the patella or (3) MRI-documented dislocation with associated bone bruises
You will not qualify if you...
- Previous ipsilateral knee surgery
- Obligatory/fixed/habitual patella dislocation or subluxation
- Unloadable inferior or lateral chondral damage on the patella that would require a tibial tubercle transfer for unloading purposes
- Pathologic tibiofemoral instability
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Trial Site Locations
Total: 16 locations
1
Stanford University
Redwood City, California, United States, 94063
Actively Recruiting
2
University of Florida
Gainesville, Florida, United States, 32607
Actively Recruiting
3
Midwest Orthopaedics at Rush
Chicago, Illinois, United States, 60612
Actively Recruiting
4
University of Iowa
Iowa City, Iowa, United States, 52242
Actively Recruiting
5
Massachusetts General Hospital
Boston, Massachusetts, United States, 02114
Actively Recruiting
6
Boston Children's Hospital
Boston, Massachusetts, United States, 02115
Actively Recruiting
7
Mayo Clinic
Rochester, Minnesota, United States, 55905
Not Yet Recruiting
8
Mount Sinai
New York, New York, United States, 10012
Not Yet Recruiting
9
NYU Langone Health
New York, New York, United States, 10016
Actively Recruiting
10
Hospital for Special Surgery
New York, New York, United States, 10021
Actively Recruiting
11
Duke Health
Wake Forest, North Carolina, United States, 27587
Actively Recruiting
12
Cincinnati Children's Hospital Medical Center
Cincinnati, Ohio, United States, 45229
Actively Recruiting
13
Cleveland Clinic
Cleveland, Ohio, United States, 44195
Not Yet Recruiting
14
Ohio State University Wexler Medical Center
Dublin, Ohio, United States, 43016
Actively Recruiting
15
Oregon Health & Science University
Portland, Oregon, United States, 97239
Actively Recruiting
16
Scottish Rite for Children
Dallas, Texas, United States, 75219
Actively Recruiting
Research Team
S
Simone Gruber
CONTACT
N
Natalie Pahapill
CONTACT
How is the study designed?
Study Type
OBSERVATIONAL
Masking
N/A
Allocation
N/A
Model
N/A
Primary Purpose
N/A
Number of Arms
1
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