Status:
RECRUITING
Comparison of Dynamic and Static Medial Patellofemoral Ligament Operation Technique for Recurrent Patellar Dislocation
Lead Sponsor:
University Hospital, Basel, Switzerland
Conditions:
Patellar Instability
Eligibility:
All Genders
14+ years
Phase:
NA
Brief Summary
This study is to evaluate whether the dynamic Medial Patellofemoral Ligament (MPFL) reconstruction as described by Becher is a successful operation technique to prevent patella instability and restore...
Detailed Description
The recurrent dislocation rate of conservatively treated chronic patellar instability is high, therefore, it is recommended to manage it surgically. A frequently used surgical technique is static medi...
Eligibility Criteria
Inclusion
- Patients treated with isolated dynamic (operation procedure according to Becher et al.using the gracilis tendon) or static MPFL plastic (operation procedure according to Schöttle et al. using the gracilis tendon). MPFL reconstruction will be performed in patients with preceding patella dislocation with: 1) a Patella-Instability-Severity (PIS) score ≤ 3 with concomitant flake fracture or 2) a PIS score ≥ 4 with clinical asymptomatic trochlea dysplasia (patella stability between 30°-60° knee flexion) without other clinically relevant static risk factors.
- Closed growth plates
Exclusion
- Combined procedures with trochleoplasty (high grade trochlea dysplasia, type Dejour C,D with clinical instability between 30° and 60° of knee flexion)
- combined procedures with cartilage transplantation
- High grade patellofemoral arthritis (Kellgren Lawrence score ≥3)
- combined procedures with femoral or tibial osteotomy
- Clinically eminent valgus axis (\>15° valgus)
- Femoral internal rotation \>20°, tibial external rotation \>40°
- Instability of the cruciate or collateral ligaments
- Known significant musculoskeletal disease
- Cognitive impairment
Key Trial Info
Start Date :
May 10 2021
Trial Type :
INTERVENTIONAL
Allocation :
ESTIMATED
End Date :
March 1 2027
Estimated Enrollment :
60 Patients enrolled
Trial Details
Trial ID
NCT04849130
Start Date
May 10 2021
End Date
March 1 2027
Last Update
April 22 2025
Active Locations (2)
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1
Department of Orthopaedics and Traumatology, University Hospital Basel
Basel, Switzerland, 4031
2
Department of Orthopaedics and Traumatology, Swiss Altius Medical Clinic
Rheinfelden, Switzerland, 4310