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Updated: Dec 15, 2025

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Matrix-assisted Autologous Chondrocyte Transplantation for Remodeling and Repair of Chondral Defects in a Rabbit Model
Published on: May 21, 2013
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Matrix-Induced Autologous Chondrycte Implantation for a Glenoid Chondral Defect: A Case Report
Garrett Steinmetz1, John Hamilton1, Carl Fernandes1
1Department of Orthopedic Surgery, University of Oklahoma, Oklahoma City, Oklahoma.
JBJS Case Connector
|July 11, 2020
Summary
Matrix-induced autologous chondrocyte implantation (MACI) successfully treated a rare glenoid chondral defect in a 33-year-old man. This innovative treatment improved shoulder function scores significantly at two years post-surgery.
Area of Science:
- Orthopedic surgery
- Regenerative medicine
- Sports medicine
Background:
- Chondral defects of the glenoid are uncommon and pose significant management challenges.
- Current treatment options for glenoid chondral lesions are limited, often yielding suboptimal results.
- Matrix-induced autologous chondrocyte implantation (MACI) is a regenerative technique for cartilage repair.
Observation:
- A 33-year-old male patient presented with a 1.5 x 2 cm chondral defect of the right glenoid.
- The defect was identified arthroscopically.
- The patient underwent treatment with MACI.
Findings:
- The patient experienced significant functional improvement 2 years after MACI.
- Constant shoulder score increased by 44 points.
- American Shoulder and Elbow Surgeons (ASES) shoulder score improved by 51.6 points.
Implications:
- This case demonstrates the efficacy of MACI for treating glenoid chondral defects.
- MACI offers a viable surgical option for managing these challenging shoulder injuries.
- Successful outcomes with MACI may encourage wider adoption for similar cases.

