- •The percentage of lumbrical muscles that migrated into the Carpal Tunnel during full finger flexion was 79.4%.
- •The magnitude of migration of lumbrical muscles was 2.99 cm.
- •After the lumbrical incursion, the cross-sectional area of the Carpal Tunnel increased by .13 cm2.
- •The traditional splinting properties for the treatment of Carpal Tunnel Syndrome should be revised to account for lumbrical incursion into the Carpal Tunnel.
Purpose of the study
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JHT Read for Credit
Quiz: # 855
- # 1.The lumbricals
- a.migrate distally owing to their attachment to the tendon of the FDS
- b.migrate distally owing to their attachment to the tendon of the FDP
- c.migrate distally independent of the movement of the flexor tendons
- d.maintain a fixed position during finger flexion
- # 2.Reproduction of carpal tunnel symptoms after maintaining a full fist in neutral for 60 seconds constitutes a
- a.+ Mills Test
- b.+ Phalen's Sign
- c.+ Watson Sign
- d.+ Berger's Closed Fist Test
- # 3.MCP flexion was approximately _____ when the lumbricals entered the distal border of the transverse carpal ligament
- # 4.With full finger flexion the
- a.lumbricals flattened out
- b.cross sectional area of the carpal tunnel increased
- c.cross sectional area of the carpal tunnel decreased
- d.cross sectional area of the carpal tunnel was unchanged
- # 5.The evidence supports the phenomenon of lumbrical incursion into the carpal tunnel during finger flexion
Availability of data and material: A copy of the data are available from the corresponding author on reasonable request.
Conflicts of interest: None.