Arthroscopic Lateral Release for Patellar Instability: Outcomes and Success Rates

Reported Outcomes

Symptom Relief

• Pain reduction: Significant in majority; relieves lateral retinacular tension.
• Range of motion: Improved flexion/extension as lateral tightness released.

Functional Return

• Sports/activity: Many return to pre-injury level after structured rehab.
• ADLs: Most resume daily activities without limitation.

Long-Term Data

• Sustained benefit reported at 2–5 years in select cohorts.
• Recurrent instability or patellofemoral pain occurs in subset; may require tibial tubercle transfer (Fulkerson) or MPFL reconstruction.

Revision Surgery

Rate varies (5–20%); indicated for persistent instability, medial subluxation (over-release), or unresolved pain.

Patient Selection Is Critical

Best outcomes in:

• Objective lateral tightness on exam
• No significant trochlear dysplasia or patella alta
• Failed comprehensive nonoperative management

Isolated lateral release is rarely sufficient for recurrent dislocation; often combined with MPFL reconstruction or bony procedures.