Anatomic Reconstruction of the Patellofemoral Joint

Completed · Phase 4

Conditions studied: Knee Replacement Surgery

In brief

The investigators posit that it would be advantageous to reproduce the height of the entire patellofemoral joint in order to maintain the lever arm of the quadriceps mechanism at its preoperative level. Failure to do this may cause the quadriceps mechanism to be inefficient. For example the quadriceps mechanism would have to work harder if the total patellofemoral (PF) height is diminished. Alternatively, diminished motion or increased patellar strain may occur if the overall PF height is increased. The investigators theorize that either of these sizing errors could lead to anterior knee pain. The purpose of this study is to compare the clinical outcomes between two surgical techniques: 1) a technique of reproducing the total PF joint on both sides of the articulation (Group 1) and 2) the traditional technique of reproducing only the patellar thickness on one side of the joint (Group 2).

Key facts

Study ID

NCT01375231

Run by

OrthoCarolina Research Institute, Inc.

People needed

52

Starts

2011-06-01

Expected to finish

2013-05-01

Last updated by the study team

2014-06-30

Who can join

Age: any. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Patients presenting for a primary total knee replacement who have failed conservative medical management.
• Total knee replacement includes patella resurfacing.
• Patient is willing and able to understand, sign, and date the study specific patient informed consent, to volunteer participation in the study.
• Patient is psychosocially, mentally, and physically able to comply with the requirements of the study including post-op clinical evaluations and completion of questionnaires.

You may not qualify if…

• Patients presenting for a unicompartmental knee replacement.
• Patients presenting for a revision total knee replacement.
• Total knee replacement does not include patella resurfacing.
• Patients with angular deformity greater than 15 degrees.
• Patients with subluxation/dislocation of the patella.
• Patients with severe patellar bone loss.

Where it is running

• OrthoCarolina Research Institute/OrthoCarolina — Charlotte, North Carolina, United States

Full record on ClinicalTrials.gov

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