intrinsic tightness test
A clinical examination to assess contracture of the interosseous and lumbrical muscles.
Full Definition
The intrinsic tightness test evaluates the length and flexibility of the intrinsic muscles of the hand, particularly the interossei and lumbricals. The test is performed by comparing passive flexion of the proximal interphalangeal (PIP) joint with the metacarpophalangeal (MCP) joint in extension versus flexion. If PIP flexion is significantly limited when the MCP is extended but improves when the MCP is flexed, this indicates intrinsic muscle tightness. This test is important for planning surgical releases in conditions like Dupuytren's contracture, stroke, or other conditions causing intrinsic muscle contracture.
Usage
Usage note: Also known as the Bunnell test; compare MCP extended vs. flexed positions.
In Context
- "The intrinsic tightness test was positive, indicating need for interosseous muscle release." — Physical examination
- "Pre-operative intrinsic tightness testing guided the surgical approach for contracture release." — Surgical planning