Table 1.

Isolation of “target” muscles in focal hand dystonia without electromyographic guidance

Intended muscle placementSite of actual needle placement (no. of patients)
n = no. of attempted placements; FCR = flexor carpi radialis; FDS = flexor digitorum superficialis; FCU = flexor carpiulnaris; FDP = flexor digitorum profundus; APB = abductor pollicis brevis; FPL = flexor pollicis longus; EIP = extensor indicis proplus; EDC = extensor digitorum communis; ECR = extensor carpi radialis; II = fascicles of index finger; III = fascicles of middle finger; IV = fascicles of ring finger; V = fascicles of little finger.
FCR, n = 3FCR (2)
FDS II (1)
FCU, n = 4FCU (2)
FDP II (1)
Not in muscles (1)
FPB, n = 1APB (1)
FPL, n = 3FDS II (2)
Not in muscle (1)
PT, n = 3PT (1)
FDS III (1)
FCR (1)
FDS II, n = 5FDS (1)
FCR (3)
Not in muscle (1)
FDS IV, n = 1FPL (1)
FDP II, n = 4FDP II (2)
FDP III (1)
FCR (1)
FDP III, n = 3FDP III (2)
Not in muscle (1)
FDP IV, n = 2FDP IV (1)
FCU (1)
EIP, n = 5EIP (2)
EDC II (2)
Not in muscle (1)
EDC II, n = 3EDC II (1)
ECR (2)
ECU, n = 1EDC II (1)