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Clinical Outcomes Following Patellar Dislocation in Young Athletes

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT03040232
Recruitment Status : Completed
First Posted : February 2, 2017
Last Update Posted : July 15, 2020
Information provided by (Responsible Party):
Children's Hospital Medical Center, Cincinnati

Brief Summary:
The purpose of this study is to identify predictors of future injury and disability following LPD. The investigators' long term goal is to improve longitudinal outcomes of athletes with LPD following surgical and non-surgical management. Currently, there is limited information available to clinicians regarding appropriate criteria for returning athletes to sports participation following LPD. The evidence produced by this study will provide necessary information to develop appropriate rehabilitation strategies that may reduce the risk for future patellar instability and associated patellofemoral joint dysfunction and pain.

Condition or disease Intervention/treatment Phase
Patella Dislocation Recurrent Patellar Dislocation Other: biomechanical assessment Not Applicable

Detailed Description:

The basis of the proposed study is to determine the clinical outcomes following lateral patellar dislocation (LPD). Despite surgical and non-surgical interventions, young athletes are at high risk for sustaining subsequent dislocations that magnify the effects of disability. It is suspected that if athletes return to high-level activities and expose their knees to substantial forces without normalized movement strategies, then this may increase the risk for future joint injury. Currently, there are no evidence-based criteria to determine an athlete's readiness for sports activity following LPD. The purpose of this study is to characterize clinical outcomes, function, and neuromuscular control strategies employed by athletes following LPD at the time when they are returning to sports participation.

A prospective, longitudinal study design will be utilized. A cohort of up to 100 athletes (ages 12 - 25 years) who have sustained LPD during sports activities that require jumping, cutting, or pivoting maneuvers will be consecutively recruited from the offices of local orthopaedic surgeons, primary care physicians, and sports physical therapists for this study. Investigators will target a subset of surgically managed athletes and a subset of non-surgically managed athletes with LPD. A cohort of up to 100 individuals without history of knee injury will be recruited from local schools and universities to serve as control participants. Data will be collected to evaluate clinical outcomes, thigh and hip strength, lower body function, balance and neuromuscular control strategies. Clinical outcomes will be assessed using self-report questionnaires and performance-based measures, including hop and agility tests. Thigh and hip strength will be assessed utilizing an isokinetic dynamometer. Lower body function will be assessed using a series of single-leg and double-leg hopping tests. Balance will be assessed utilizing a clinical lower extremity reach test. Neuromuscular control will be evaluated by 3-D motion analysis during running, jumping, and cutting activities. Overall, this study will provide a comprehensive evaluation of athletes following LPD. It will provide important information for the future development of rehabilitation approaches that may maximize clinical outcomes for the at risk population.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 50 participants
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Screening
Official Title: Clinical Outcomes Following Patellar Dislocation in Young Athletes
Study Start Date : January 2016
Actual Primary Completion Date : December 2017
Actual Study Completion Date : June 2018

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Dislocations

Arm Intervention/treatment
Experimental: MPFl Reconstruction
subjects that have had MPFL reconstruction surgery
Other: biomechanical assessment
biomechanical and strength assessment of both groups

Active Comparator: Active Controls
subjects that have not had MPFL reconstruction surgery
Other: biomechanical assessment
biomechanical and strength assessment of both groups

Primary Outcome Measures :
  1. change in biomechanical assessment using motion analysis [ Time Frame: 6 months ]
    measure changes in biomechanics between groups using motion analysis with particular interest in knee valgus measures

Information from the National Library of Medicine

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Ages Eligible for Study:   12 Years to 25 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Participants with LPD who have been managed with non-surgical rehabilitation, pre-surgical rehabilitation, and medial patellofemoral ligament reconstruction (MPFL-R) may be included.
  • Participants may be included in this study is they have completed supervised rehabilitation and have been cleared to return to sports participation by their physician.

Exclusion Criteria:

  1. lower extremity orthopedic surgeries other than procedures for patellar instability
  2. lower extremity injuries within the last 3 months other than patellar dislocation
  3. neurological disorders
  4. medical conditions that might affect neuromuscular performance.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT03040232

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United States, Ohio
Cincinnati Childrens Hospital Medical Center
Cincinnati, Ohio, United States, 45229
Sponsors and Collaborators
Children's Hospital Medical Center, Cincinnati
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Principal Investigator: Gregory D Myer, PhD Cincinanti Childrens Hospital
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Responsible Party: Children's Hospital Medical Center, Cincinnati Identifier: NCT03040232    
Other Study ID Numbers: 2011-1984
First Posted: February 2, 2017    Key Record Dates
Last Update Posted: July 15, 2020
Last Verified: July 2020
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No
Additional relevant MeSH terms:
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Joint Dislocations
Patellar Dislocation
Joint Diseases
Musculoskeletal Diseases
Wounds and Injuries
Knee Injuries
Leg Injuries