| Type | Description | Treatment |
| 1 | Boutonniere (most common) | Synovectomy with extensor hood reconstruction; MCP fusion or arthroplasty |
| 2 | Boutonniere with CMC subluxation (uncommon; Type 1 + Type 3) | Same as type 1 and type 3 |
| 3 | Swan neck deformity (2nd most common) | Splinting vs CMC arthroplasty; MCP fusion |
| 4 | Gamekeeper deformity | Synovectomy/UCL reconstruction or Fusion |
| 5 | Swan neck with MCP disease | Fusion of MCPJ |
| 6 | Arthritis mutilans | Arthrodesis |
Note: C1 doesn’t have a sensory branch For the purpose of making learning easier, we divide the remaining dermatomal segments into 4 groups which will be accompanied by analogies and mnemonics. C2-C4 These supply the “hooded cape” region. C2: hood region abutting the trigeminal distribution C3: upper neck C4: lower…
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Mnemonic for Urea Cycle Intermediates Orange Cola, Coffee, Alcohol of Argentina For Aggressive Urine Orange: Ornithine Cola: Carbamoyl Phosphate Coffee: Citrulline Alcohol: Aspartate (enters cycle) Argentina: Arginosuccinate For: Fumarate (leaves cycle) Aggressive: Arginine Urine: Urea (leaves cycle) Structure of Urea NH2-CO-NH2 (1 amide from aspartate and 1 from ammonia) Amide…