Actively Recruiting
Study of Blood Flow Restriction Training to Improve Recovery After Patellar Instability in Teens and Adults
Led by Caitlin Conley · Updated on 2025-07-03
78
Participants Needed
4
Research Sites
N/A
Total Duration
On this page
Sponsors
C
Caitlin Conley
Lead Sponsor
T
The Cleveland Clinic
Collaborating Sponsor
AI-Summary
What this Trial Is About
This research study investigates whether a new type of physical therapy called blood flow restriction training BFRT can improve recovery for people with patellar instability, a condition involving knee dislocation or injury. The study is designed to answer important questions about BFRTs role in rehabilitation by comparing it with standard physical therapy. Participants eligible for the study are aged 14 to 40 years and have a diagnosis of traumatic patellar instability confirmed by a qualified medical professional. Participants are randomly assigned to one of two groups standard physical therapy alone or standard physical therapy combined with BFRT. BFRT involves using an air cuff inflated around the thigh to limit blood flow during a standardized exercise program, lasting 8 weeks. Physical therapy may include exercises to improve knee strength, hip strength, gait training, and other supportive activities. Both groups receive close monitoring to ensure safety throughout treatment. Participants will attend multiple study visits over two years, starting with screening and enrollment, followed by strength testing, biomechanical assessments, questionnaires, blood and urine sample collection, and MRI scans. These visits occur at 1 week, 5 weeks, 9 weeks, 6 months, 1 year, and 2 years after enrollment. Throughout the study, researchers will measure knee function, strength symmetry, pain levels, and muscle health using tools like the Norwich Patellar Instability Scale and MRI imaging to assess recovery progress.
CONDITIONS
Brief Title
Blood Flow Restriction Training After Patellar INStability
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Diagnosis of traumatic patellar instability confirmed by a qualified physician or physical therapist
- Age between 14 and 40 years
- Skeletally mature with closed growth plates confirmed by X-ray
- Score of 80 or more on the Sports Activity Scale indicating regular running, twisting, or turning activities
- Desire to return to pre-injury activity level
You will not qualify if you...
- Osteochondral lesion requiring surgical fixation
- Radiographic evidence of osteoarthritis (less than Kellgren-Lawrence Grade 2)
- Previous knee surgery on either leg
- Most recent instability event occurred more than 3 months before enrollment
- History of any inflammatory disorder
- Body mass index over 35 kg/m2
- Diabetes or uncontrolled high blood pressure
- Varicose veins or personal or immediate family history of deep vein thrombosis
- Conditions or previous surgeries affecting ability to walk
- Planned trips or vacations preventing attendance at 4 consecutive physical therapy sessions
Research Team
C
Caitlin Conley, PhD
N
Natalie Corey
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