Research coverage
How often a second operation was needed after MPFL and osteochondral fixation
Dr. Green’s review of 321 consecutive MPFL reconstructions from his own practice.
What it found
- A retrospective review of 321 MPFL reconstructions performed by a single surgeon between 2011 and 2019.
- Of those, 38 knees had an MPFL reconstruction together with fixation of an osteochondral fracture.
- Patients averaged 14.8 years of age at surgery, with an average of 2.1 years of follow-up.
- An average of 4.4 biodegradable fixation nails were used.
- Fewer than 25% of those patients went on to need a second operation.
In Dr. Green’s own words
We know that approximately 10 percent of cases with acute patella dislocation and a relatively significant osteochondral fracture that early surgical stabilization is often necessary,
For the past many years, we’ve done this simultaneously with an MPFL reconstruction with an attempt to try and preserve cartilage going forward.
Orthopedics Today · 18 August 2020. Dr. Green led the study. Read the original
The research behind it
The 6 most recent of his 19 papers on the MPFL, indexed on PubMed under his Hospital for Special Surgery affiliation. Each opens on PubMed.
All 19 of his papers on this subject- Medial patellotibial ligament reconstruction concomitant with medial patellofemoral ligament (MPFL) reconstruction in fixed and obligatory patellar dislocation: A consecutive case series Journal of ISAKOS : joint disorders & orthopaedic sports medicine · 2026 Aug · Dr. Green is author 9 of 9
- Validation of the ACL Return to Sport after Injury (ACL-RSI) Scale in Pediatric and Adolescent Patients After Medial Patellofemoral Ligament Reconstruction Orthopaedic journal of sports medicine · 2026 May · Dr. Green is author 10 of 11
- Factors Associated With the Decision to Perform a Lateral Retinacular Release or Lengthening During Medial Patellofemoral Ligament Reconstruction in the JUPITER Cohort Orthopaedic journal of sports medicine · 2026 Feb · Dr. Green is author 3 of 8
- How much improvement in patient reported outcomes after isolated medial patellofemoral ligament reconstruction is associated with surgeon-defined satisfactory outcomes? A JUPITER study Journal of ISAKOS : joint disorders & orthopaedic sports medicine · 2025 Dec · Dr. Green is author 5 of 10
- Variation in Surgical Technique for Medial Patellofemoral Ligament Reconstruction in Skeletally Immature Patients: Data From the JUPITER Prospective Multicenter Study Group Orthopaedic journal of sports medicine · 2025 Feb · Dr. Green is author 3 of 23
- Simultaneous MPFL reconstruction and guided growth result in low rates of recurrent patellofemoral instability Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2024 May · Dr. Green is author 8 of 8