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CompletedNCT01719666Updated Sep 18, 2025

Medial Patellofemoral Ligament Reconstruction With or Without Lateral Retinaculum Release

An interventional study of MPFL reconstruction and lateral retinaculum release and conventional surgery in Episodic Patellar Dislocation, sponsored by Hospices Civils de Lyon. Completed at 1 site in France. Open to participants aged 18 Years to 45 Years. Per ClinicalTrials.gov, last updated 2025-09-18.

Sponsored by Hospices Civils de Lyon · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
140
Allocation
Randomized
Ages
18 Years to 45 Years
Sex
All
01

Study summary

The investigators hypothesis is lateral retinaculum release has no effect on treatment of Patellar Recurrent Dislocation with Medial Patellofemoral Ligament (MPFL) reconstruction.

02

Conditions studied

  • Episodic Patellar Dislocation

Keywords

  • MPFL
  • patella
  • dislocation
  • release
03

In context

Patella Fracture

40 studies on the registry are indexed under Patella Fracture; 9 are open to participants now.

This study's enrollment of 140 is above the median of 53 across 30 interventional studies indexed under Patella Fracture.

Browse Patella Fracture studies →

Lead sponsor

Hospices Civils de Lyon is the lead sponsor of 1,866 studies on the registry; 448 are open to participants now.

Browse Hospices Civils de Lyon studies →

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

04

Who can participate

Ages eligible
18 Years to 45 Years
Sexes eligible
All
Accepts healthy volunteers
No

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

  • age between 18yo and 45yo
  • indication for MPFL reconstruction
  • unilateral or bilateral indication

Exclusion criteria

Exclusion Criteria:

  • indication for bony procedures
  • previous surgery for PF disorders
  • patient refusal
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
140 participants (actual)

Study arms

  • Other
    isolated MPFL reconstruction

    Procedure: conventional surgery

  • Experimental
    MPFL reconstruction and Lateral retinaculum release

    Procedure: MPFL reconstruction and lateral retinaculum release

Interventions

  • ProcedureMPFL reconstruction and lateral retinaculum release

    MPFL is performed with a standard technique using gracilis tendon. A tunnel is performed at the femoral part with a bioabsorbable screw fixation and 2 bundles with suture fixation at the patellar side

  • Procedureconventional surgery

    conventional surgery: MPFL reconstruction

06

What researchers measure

Primary outcomes

  1. Patellar tilt measurement

    IKDC score, patellar tilt measurement on x-rays and CT-scan

    Time frame: 2 years of follow up

Secondary outcomes

  1. rate of complications

    Time frame: 2 years of follow up

07

Study locations

1 site
  • Croix-Rousse Hospital, Hospices Civils de Lyon
    Lyon, 69004, France
08

References and documents

Publications

  • Faure F, Erard J, Batailler C, Magnussen RA, Lustig S, Servien E. Lateral Retinacular Release During MPFL Reconstruction: A Randomized Clinical Trial. Am J Sports Med. 2025 Oct;53(12):2869-2874. doi: 10.1177/03635465251366306. Epub 2025 Sep 11. PubMed 40934533 ↗
09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Nov 2011 to primary completion in Sep 2024, 153 months.

Of 18 interventional studies with no phase under Patella Fracture, half reached primary completion within 34 months of starting (the median), counting those still running; a quarter within 19 and three quarters within 136. This study's 153 months is above that.

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

Registered
Dec 22, 2011
First posted
Nov 1, 2012
StartActual
Nov 22, 2011
Primary completionActual
Sep 20, 2024
CompletionActual
Sep 20, 2024
Last update
Sep 18, 2025
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.
No changes since tracking began. The registry record was last updated on Sep 18, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01719666
Lead sponsor
Hospices Civils de Lyon
Responsible party
Sponsor
First posted
Nov 1, 2012
Start date
Nov 22, 2011
Primary completion
Sep 20, 2024
Completion
Sep 20, 2024
Last update
Sep 18, 2025

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Sep 2025. You cannot join it, but the record below documents what was studied.

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