Clinical trial NCT06906419: Arthroscopic Trochleaplasty in Chronic Relapsing Patellar Dislocations: A Follow-up Study
Official title: Evaluering av Kliniske Resultater Hos Pasienter Operert for Kronisk Residiverende Patellaluksasjoner Ved Hjelp av Artroskopisk Stabilisering Med Trokleaplastikk. En Kvalitetskontroll-studie
Study type: OBSERVATIONAL
Overall status: ENROLLING_BY_INVITATION
Conditions: Patellar Dislocation
Keywords: patellar dislocation
arthroscopic
trochleaplasty
Lead sponsor: Vestre Viken Hospital Trust
Sponsor class: OTHER
First posted: 2025-04-02
Enrollment: 20
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: RETROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: This retrospective cohort study evaluates the long-term outcomes of arthroscopic trochleoplasty performed to stabilize the patella in patients with chronic recurrent dislocations. The procedure involves deepening the trochlea femoris to enhance patellar tracking and prevent lateral dislocation. In some cases, medial patellofemoral ligament (MPFL) reconstruction was also performed. Data will be collected through patient medical records and structured telephone interviews, focusing on re-operation rates, postoperative complications, pain levels, functional outcomes, and quality of life. The study seeks to provide insights into the effectiveness and safety of this surgical technique, aiming to optimize treatment protocols for patellar instability.

Brief summary: This study aims to evaluate the long-term clinical outcomes of arthroscopic trochleoplasty in patients treated for chronic recurrent patellar dislocations. The primary objective is to assess the effectiveness of the procedure in reducing the need for re-operations and preventing recurrent instability. Secondary objectives include evaluating postoperative complications, patellofemoral pain, functional outcomes using the Kujala Anterior Knee Pain Scale (AKPS), and quality of life measured by EQ-5D-5L. This retrospective cohort study will analyze data from patient records and structured telephone interviews conducted at least one year post-surgery.


Eligibility criteria: Inclusion Criteria:

* Patients aged 18 years and older.
* Underwent arthroscopic trochleoplasty for chronic recurrent patellar dislocations.
* Surgery performed between 2015 and 2023.
* Availability of follow-up data and consent for participation.

Exclusion Criteria:

* Concurrent knee surgeries unrelated to trochleoplasty.
* Previous surgeries on the same knee.
* Other significant orthopedic conditions affecting the knee.
* Lack of follow-up data or consent.

Primary outcomes:
measure: Re-operation Rate
timeFrame: The investigators seek to register any re-operations from the time between the index surgery and the interview, ranging from 1 year up to 7 years postoperatively.
Secondary outcomes:
measure: Recurrent Instability Rate
timeFrame: The investigators seek to register any incidences of recurrent instability from the time between the index surgery and the interview, ranging from 1 year up to 7 years postoperatively.
measure: Postoperative Complications
timeFrame: The investigators seek to register any complications related to the index surgery from the time between the index surgery and the interview, ranging from 1 year up to 7 years postoperatively.
measure: Functional Outcome
timeFrame: At the time of the interview, which will be performed from 1 year up to 7 years postoperatively.
measure: EQ-5D-5L (HRQoL) scores
timeFrame: At the time of the follow-up interview, which will be performed from 1 year up to 7 years postoperatively.
measure: Pain Assessment
timeFrame: At the time of the follow-up interview, which will be performed from 1 year up to 7 years postoperatively.
measure: Patient Satisfaction
timeFrame: At the time of the follow-up interview, which will be performed from 1 year up to 7 years postoperatively.
Other outcomes:
Locations:
city: Drammen
country: Norway
facility: Vestre Viken HF
Study officials:
References: