| Abbreviations | Meaning |
 | OPS | Operations; Optical Position Sensor; Osteoporosis-pseudolipoma Syndrome; Outpatient Service; Outpatient Surgery |
| BPTB | Bone-patellar Tendon-bone |
| JBJS | Journal Of Bone And Joint Surgery (US) |
| BSO | Bilateral Sagittal Osteotomy; Bilateral Salpingo-oophorectomy; Butathione Sulfoximine |
| HOS | Health Opinion Survey; High-order Spectrum; Holt-Oram Syndrome; Human Osteosarcoma; Hypoosmotic Swelling [test] |
| ORSA | Osteoclast Resorption Stimulating Activity |
| CWHTO | Closing Wedge High Tibial Osteotomy |
| MAA | Monoarticular Arthritis |
| GADS | Gonococcal Arthritis/dermatitis Syndrome |
| YA | Yersinia Arthritis |
| OIC | Organized Indigenous Caregiving; Osteogenesis Imperfecta Congenita |
| JOS | Jaw Osteosarcoma |
| NIAMDD | National Institute Of Arthritis, Metabolism, And Digestive Diseases |
| BMT | Bone Marrow Transplant (see HDC And HDC/BMT) |
| GO | Geroderma Osteodysplastica |
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