According to study results, a preoperative bone scan to confirm isolated patellofemoral arthritis may be useful to help select patients for patellofemoral joint arthroplasty.
“Based on this study and the available literature, we would recommend the use of a preoperative bone scan as a helpful tool in the selection process for patients considering isolated [patellofemoral joint arthroplasty] PFA,” the authors wrote.
Researchers retrospectively reviewed data for 32 patients who underwent isolated patellofemoral arthroplasty for patellofemoral arthritis with the same implant design (Gender Solutions PFJ, Zimmer). Patients had an average follow-up of 52 months. MRI was used in 16 patients to confirm isolated patellofemoral arthritis. Their average follow-up was 63 months. The groups were not different with regard to age, BMI, follow-up or preoperative range of motion.
Results showed 100% survivorship in patients who were confirmed with a preoperative bone scan. Five of the 16 patients in which MRI was used to determine isolated patellofemoral arthritis needed revision surgery with conversion to total knee arthroplasty. Patients who were confirmed with MRI needed revision because of progression of knee arthritis in the tibial-femoral joint, according to results. No implant-related failures were seen. – by Monica Jaramillo
Disclosures: Baker reports no relevant financial disclosures. Please see the study for all other authors’ relevant financial disclosures.