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RecruitingNCT02267564Updated Jun 8, 2023

MPFL Reconstruction With or Without Tibial Tubercle Transfer

An interventional study of MPFL reconstruction and tibial tubercle transfer in Patellar Dislocation, sponsored by Yu Jiakuo. Recruiting at 1 site in China. Open to participants aged Up to 40 Years. Per ClinicalTrials.gov, last updated 2023-06-08.

Sponsored by Yu Jiakuo · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Aug 2025, 1 year 3 months ago, but the record still lists the study as recruiting.
  • Started Sep 2014; still recruiting 12 years 2 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
70
Allocation
Randomized
Ages
Up to 40 Years
Sex
All
01

Study summary

This study aims to compare the clinical outcome of Medial PatelloFemoral Ligament (MPFL) reconstruction with and without tibial tubercle transfer for recurrent patellar dislocation.

Read the detailed description

70 patients with recurrent patellar instability were randomly assigned to undergo MPFL reconstruction with or without tibial tubercle transfer. Follow-ups were performed at 12 and 24 months postoperatively, and computed tomography (CT) was performed immediately after the operation and at follow-up. The knee function was evaluated preoperatively and at 2 years postoperatively using Lysholm,Tegner and Kujala scales. Redislocation or multiple episodes of patellar instability were considered failures.

02

Conditions studied

  • Patellar Dislocation

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Keywords

  • patellar dislocation
  • medial patellofemoral ligament
  • tibial tubercle transfer
03

In context

Patellar Dislocation

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

This study's planned enrollment of 70 is above the median of 50 across 22 interventional studies indexed under Patellar Dislocation.

Browse Patellar Dislocation studies →

Lead sponsor

Yu Jiakuo is the lead sponsor of 2 studies on the registry; 1 is open to participants now.

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

04

Who can participate

Ages eligible
Up to 40 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

  • recurrent patellar dislocation or instability,patients with TT-TG value equal to or greater than 20 mm,patients with closed epiphyseal plate

TT-TG：Two lines drawn perpendicular to posterior bicondylar line, one line through middle of the trochlear groove(TG) and the second through tibial tuberosity (TT). Distance between the lines is measured.

Exclusion criteria

Exclusion Criteria:

  • bilateral patellar dislocation, a previous surgery in the involved leg,patients with open epiphyseal plate,patients with severe trochlear dysplasia
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Investigator, Outcomes assessor)
Enrollment
70 participants (estimated)

Study arms

  • Experimental
    MPFLR without tibial tubercle transfer

    Patients with patellar instability undergo MPFL reconstruction without tibial tubercle transfer.

    Procedure: MPFL reconstruction · Procedure: tibial tubercle transfer

  • Active comparator
    MPFLR with tibial tubercle transfer

    Patients with patellar instability undergo MPFL reconstruction with tibial tubercle transfer.

    Procedure: MPFL reconstruction · Procedure: tibial tubercle transfer

Interventions

  • ProcedureMPFL reconstruction

    to correct patellar dislocation with medial patellofemoral ligament reconstruction

  • Proceduretibial tubercle transfer

    to correct patellar dislocation with tibial tubercle medial transfer

06

What researchers measure

Primary outcomes

  1. Lysholm score of the knee

    Lysholm score of the knee was evaluated preoperatively and at 2 years post operation . Scale name:score

    Time frame: two years

  2. Tegner score of the knee

    Tegner score of the knee was evaluated preoperatively and at 2 years post operation . Scale name:score

    Time frame: two years

  3. Kujala score of the knee

    Kujala score of the knee was evaluated preoperatively and at 2 years post operation .

    Time frame: two years

Secondary outcomes

  1. CT images of the knee

    CT was performed immediately after the operation and at follow-up.

    Time frame: two years

07

Study locations

1 of 1 sites recruiting
  • Peking University Third Hospital
    Beijing, Beijing 100191, China
    Recruiting
    • Jia-Kuo Yu, Doctor · Contact861082267392
    • Jia-Kuo Yu, Doctor · Principal investigator
    • Hai-Jun Wang, Doctor · Sub investigator
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Sep 2014 (actual). Primary completion is estimated for Aug 2025, 131 months after the start.

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

Registered
Sep 28, 2014
First posted
Oct 17, 2014
StartActual
Sep 2014
Primary completionEst.
Aug 2025
CompletionEst.
Aug 2025
Last update
Jun 8, 2023
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 Jun 8, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT02267564
Lead sponsor
Yu Jiakuo
Responsible party
Yu Jiakuo (Professor, Peking University Third Hospital) — Sponsor-investigator
First posted
Oct 17, 2014
Start date
Sep 2014
Primary completion
Aug 2025 (estimated)
Completion
Aug 2025 (estimated)
Last update
Jun 8, 2023

Study contacts

Jia-Kuo Yu, Doctor
Contact
yujiakuo@126.com
861082267392
Jia-Kuo Yu, Doctor
study chair · Peking University Third Hospital

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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