Patellofemoral Pain After Unicondylar Knee Arthroplasty
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Purpose
Unicondylar knee arthroplasty (UKA) is a proven procedure in patients suffering from unicompartmental knee osteoarthritis. Two different types of UKA design are available - both with different pros and cons. The so-called 'mobile-bearing UKA' requires the removal of an additional amount of cartilage and bone close to the implantat. It is unclear whether this is of clinical relevance.
We speculate that the amount of cartilage/bone removal is related to the clinical outcome of the UKA-surgery.
In patients receiving a mobile-bearing UKA that amount of cartilage/bone removal is measured during the surgery. The clinical success of the procedure will be determined with certain knee questionnaires (Kujala & KOOS)preoperatively, 3 months postoperatively, 6 months postoperatively and 1 year postoperatively. Additionally, the so-called bone-remodelling around that area of resected cartilage and bone will be measured (SPECT-CT) postoperatively.
The three variables (removed amount of cartilage/bone; clinical success with regard to the questionnaires; bone remodelling) are then analyzed with statistical methods to find out potential assoziations among them.
| Condition | Intervention |
|---|---|
|
Mobile-bearing Unicondylar Knee Arthroplasty |
Procedure: mobile-bearing unicondylar knee arthroplasty |
| Study Type: | Observational |
| Study Design: | Observational Model: Case-Only Time Perspective: Prospective |
- Size of anterior femoral notch [ Time Frame: day 0 ] [ Designated as safety issue: No ]Required cartilage / bone removal adjacent to the femoral implant
- Kujala Score changes [ Time Frame: -1 days, 3 months, 6 months, 1 year ] [ Designated as safety issue: No ]
- KOOS questionnaire changes [ Time Frame: -1 days, 3 months, 6 months, 1 year ] [ Designated as safety issue: No ]
- Radionuclide tracer uptake at the surgically created notch [ Time Frame: 6 months ] [ Designated as safety issue: No ]
| Estimated Enrollment: | 20 |
| Study Start Date: | September 2011 |
| Groups/Cohorts | Assigned Interventions |
|---|---|
|
mb-UKA
Patients with unicondylar osteoarthritis of the knee
|
Procedure: mobile-bearing unicondylar knee arthroplasty
mobile-bearing unicondylar knee arthroplasty
|
Eligibility| Ages Eligible for Study: | 18 Years and older |
| Genders Eligible for Study: | Both |
| Accepts Healthy Volunteers: | No |
| Sampling Method: | Probability Sample |
consecutive patients scheduled for unicondylar knee arthroplasty at the Dept. for orthopaedic surgery of our medical university
Inclusion Criteria:
- osteoarthritis or osteonecrosis in the medial or lateral tibiofemoral compartment
Exclusion Criteria:
- failed upper tibial osteotomy
- insufficiency of the collateral or anterior cruciate ligaments
- a fixed varus or valgus deformity (not passively correctable) above 15°
- a flexion deformity greater than 15°
- rheumatoid arthritis
Contacts and Locations| Contact: Michael C Liebensteiner, MD, PhD | +43 512 504 80547 | michael.liebensteiner@i-med.ac.at |
| Austria | |
| Innsbruck Medical University | Recruiting |
| Innsbruck, Austria, 6020 | |
| Contact: Martin Krismer, Prof. +43 512 504 22691 | |
| Principal Investigator: Michael C Liebensteiner, MD, PhD | |
More Information
No publications provided
| Responsible Party: | Dept. Orthopaedic Surgery, Innsbruck Medical University |
| ClinicalTrials.gov Identifier: | NCT01407042 History of Changes |
| Other Study ID Numbers: | PFJ-UKA-1 |
| Study First Received: | July 26, 2011 |
| Last Updated: | June 25, 2012 |
| Health Authority: | Austria: Ethikkommission |
Keywords provided by Medical University Innsbruck:
|
unicondylar knee arthroplasty mobile-bearing patellofemoral pain |
ClinicalTrials.gov processed this record on May 22, 2013