Summary

This study describes the frequency of different surgical procedures used in the JUPITER Cohort.

Abstract

Background

The JUPITER prospective study represents a cohort of patients from busy patellofemoral surgeons at 11 centers. Understanding what procedures are performed in a large cohort such as JUPITER will give an overview of the most common ways being used to address patellofemoral instability.

Methods

The JUPITER prospective cohort currently includes 1437 patients. All surgical procedures are documented in the database. The database was queried to evaluate the different surgical procedures included to help stabilize the patella. The percent of patients undergoing each procedure is reported.

Results

MPFL reconstruction was performed on 1129 (79%) patients. Lateral release was performed on 234 (16%) patients. Lateral retinacular lengthening was performed on 102 (7%)
patients. There were several variations of tibial tubercle osteotomy performed: anteromedialization 160 (11%), direct medial 88 (6%), Maquet 6 (<1%), distalization 53 (4%). Less common procedures included trochleoplasty which was performed on 30 (2%) patients. Distal femoral osteotomy, primarily lateral opening wedge, was performed on 18 (1%) patients. Femoral derotation osteotomy was performed on 10 (<1%) patients and tibial derotation osteotomy was performed on 6 (<1%) patients. Quadricepsplasty was performed on 12 (<1%) patients.

Conclusion

There are many procedures available in the armamentarium of a patellofemoral surgeon. In the JUPITER cohort, the majority of patients underwent MPFL reconstruction. A lateral retinacular procedure was included in roughly a quarter of the patients. Tibial tubercle osteotomy was part of treatment for roughly 20% of patients. Other procedures were much less frequent.