| PSMA | proximal spinal muscular atrophy |
|---|---|
| PSP | pancreatic spasmolytic peptide; paralytic shellfish poisoning; parathyroid secretory protein; period... |
| SAPF | simultaneous anterior and posterior [spinal] fusion |
| SBMA | spinal bulbar muscular atrophy |
| SCAVF | spinal cord arteriovenous fistula |