| 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 |
Everyone must be aware of the normal visual pathway and their defects. Here, I’ve tried to enlist the topics related to the visual pathway that are “nice to know” but you may have missed it or failed to understand properly. Below is the basic visual pathway: Wilbrand’s knee Anterior…
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