| Abbreviation | Definition |
|---|---|
| COA | California Orthopaedic Association |
| COBR | Center for Orthopaedic and Biomechanics Research |
| COC | Change Of Cast |
| COMT | Certificate in Orthopaedic Manual Therapy |
| CORD | Council of Orthopaedic Residency Directors |
| COSC | Certified Orthopaedic Surgery Coder |
| CPOG | Canadian Paediatric Orthopaedic Group |
| CSOS | Chinese Speaking Orthopaedic Society |
| CSOT | Canadian Society of Orthopaedic Technologists |
| CTD | Carpal tunnel decompression |
| DDO | Diploma in Dental Orthopaedics |
| DM | Discoid meniscus |
| DMOS | Des Moines Orthopaedic Surgeons |
| DVR | Distal Volar Radialis |
| EHS | External Hip Snap |
| EMO | Emergency Medical Optician |
| EOA | Eastern Orthopaedic Association |
| EOA | Egyptian Orthopaedic Association |
| EOEF | Eastern Orthopaedic Educational Foundation |
| EOJ | Egyptian Orthopaedic Journal |