Bunnel Test
- Bunnel Test is used to distinguish between intrinsic muscles tightness & extrinsic muscle tightness.
- Examiner passively flexes PIPJ twice
- first with MCP in extension
- next with MCP held in flexion
- Intrinsic tightness present if PIP can be flexed easily when MCP is flexed but NOT when MCP is extended
- extrinsic tightness present if PIP can be flexed easily when MCP is extended but NOT when MCP is flexed
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