Autologous Chondrocyte Implantation: Second-Look Arthroscopy

Area of Science:

• Orthopedic surgery
• Regenerative medicine
• Biomaterials science

Background:

• Graft hypertrophy is a known complication after autologous chondrocyte implantation (ACI) for cartilage defects.
• Symptomatic hypertrophy can lead to pain, catching, or effusion, often necessitating reoperation for debridement.

Purpose of the Study:

• To describe the indications and technique for second-look arthroscopy in managing symptomatic graft hypertrophy or delamination post-ACI.
• To outline the expected outcomes following this intervention.

Main Methods:

• Second-look arthroscopy is performed to identify graft hypertrophy and delamination.
• Visual and tactile assessment distinguishes the graft from native cartilage.
• Hypertrophy is recognized by raised graft margins; delamination by surface separation.
• Shaver debridement is used to level the graft with surrounding tissue, avoiding over-debridement.

Main Results:

• Patients undergoing this procedure are expected to experience resolution of pain, catching, and clicking.
• Resolution of graft-associated effusion is also an anticipated outcome.

Conclusions:

• Second-look arthroscopy is a necessary procedure for evaluating and treating symptomatic graft hypertrophy and delamination following ACI.
• This intervention aims to improve functional outcomes and patient satisfaction after cartilage repair.