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CompletedNCT03076008TT-TG OutcomeUpdated Oct 13, 2026

The Impact of Tibial Tubercle-trochlear Groove Distance and Patellar Height on the Outcome of Isolated Medial Patellofemoral Ligament Reconstruction

An observational study in Patellar Dislocation, sponsored by University of Minnesota. Completed at 1 site in United States. Open to participants aged 13 Years to 90 Years. Per ClinicalTrials.gov, last updated 2026-10-13.

Sponsored by University of Minnesota · Observational

Updated Oct 13, 2026Now CompletedStudy completion movedGo to Updates ↓
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
201
Ages
13 Years to 90 Years
Sex
All
01

Study summary

The investigators plan to perform a prospective observational cohort study of patients undergoing MPFL reconstruction for the treatment of episodic patellar instability in the absence of significant degenerative disease. The investigators will follow these study subjects for a minimum of two years to monitor their functional and clinical outcome.

02

Conditions studied

  • Patellar Dislocation

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03

In context

Patellar Dislocation

41 studies on the registry are indexed under Patellar Dislocation; 9 are open to participants now.

This study's enrollment of 201 is above the median of 100 across 15 observational studies indexed under Patellar Dislocation.

Browse Patellar Dislocation studies →

Lead sponsor

University of Minnesota is the lead sponsor of 1,216 studies on the registry; 197 are open to participants now.

Of its 136 completed or terminated interventional studies of FDA-regulated products, 95 (70%) have results posted.

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Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
13 Years to 90 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Patients undergoing MPFL reconstruction for patella instability

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • MPFL Reconstruction

Exclusion criteria

Exclusion Criteria:

  • Trochleoplasty Required
  • Prior ipsilateral knee surgery
  • Iwano grade 2+
  • CHondral injury requiring surgical treatment beyond debridement
  • Major ligamentous injury to the knee
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
201 participants (actual)
Patient registry
No

Groups and cohorts

  • MPFL Reconstruction

    Subjects undergoing MPFL Reconstruction

    Other: Observational

Interventions

  • OtherObservational

    No intervention

06

What researchers measure

Primary outcomes

  1. Recurrent Dislocation

    Recurrent Dislocation

    Time frame: 2 years

07

Study locations

1 site
  • University of Minnesota
    Minneapolis, Minnesota 55454, United States
08

References and documents

Individual participant data

Plan to share: Undecided — We are currently undecided

No publications or documents are linked to this record.

09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedDate before it movedWhere the date was before it moved

Ran from Oct 2016 to primary completion in Mar 2023, 77 months.

Completion moved once since we started tracking on Sep 25, 2026: Sep 2026 → Oct 2026, on Oct 13, 2026.

Earlier changes are on the record history on ClinicalTrials.gov ↗

How these figures are worked out, and which studies are left out of them.

Registered
Mar 6, 2017
First posted
Mar 9, 2017
StartActual
Oct 1, 2016
Primary completionActual
Mar 31, 2023
CompletionActual
Oct 6, 2026was Sep 2026
Last update
Oct 13, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Status
Active, not recruiting→Completed
changed Oct 13, 2026
Study completion
Sep 30, 2026→Oct 6, 2026 (actual)
Oct 13, 2026
Show all 1 update
  1. Oct 13, 2026
    Active, not recruiting→Completed
    Study completion Sep 30, 2026→Oct 6, 2026 (now actual)
    + 1 other change: verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT03076008
Lead sponsor
University of Minnesota
Collaborators
International Society of Arthroscopy, Knee Surgery and Orthopaedic Sports Medicine, Ohio State University, OrthoSport Victoria
Responsible party
Sponsor
First posted
Mar 9, 2017
Start date
Oct 1, 2016
Primary completion
Mar 31, 2023
Completion
Oct 6, 2026
Last update
Oct 13, 2026

Study contacts

Elizabeth Arendt
principal investigator · University of Minnesota

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.

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