Table 1.

Patient characteristics

Patient	Age (yr)	Ht (m)	Wt (kg)	Gender	Handa	Involved side	Symptom duration (yrs)	Dxb	Duration since treatment with botulinum toxin	Movement scale severity (arm)c	Pattern of symptoms during writingd
S1	57	66	74.8	F	R	R	14	DC	n/a	2	Thumb ext, F2-4 flex
S2	57	65.5	68.0	F	L	L	7	DC	n/a	6	Wrist, thumb, and F1-2 flex, F2 abd
S3	61	62	56.2	F	R	B	17	WC	13 months	9	F2-3 flex, wrist UD
S4	63	65	55.8	F	R	R	17	DC	n/a	9	Wrist flex and UD, F5 finger abd
S5	24	67	59.0	F	R	R	16	WC	n/a	4	Wrist flex and UD, F2 flex
S6	53	64	68.0	F	R	B	41	DC	n/a	9	Wrist flex and UD, F2-5 flex
S7	57	63	60.8	F	L	L	6	WC	n/a	2	Wrist, thumb and F2 flex
S8	53	62.5	54.4	F	R	R	12	WC	n/a	2	Wrist flex and F2 ext
S9	45	62.8	68.0	F	R	R	2.5	WC	n/a	2	Wrist UD, thumb and F2 flex
S10	51	72	87.1	M	R	R	6	DC	4 months	6	Wrist flex
S11	47	69	83.9	M	R	R	10	WC	n/a	2	Wrist ext, F2 abd and fle
S12	48	70.5	77.1	M	L	L	2.5	DC	6 months	4	Wrist UD, F5 flex
S13	56	73	82.6	M	L	L	5	WC	n/a	2	Wrist ext, F2 flex
S14	53	70	70.3	M	R	R	5	WC	4 months	2	Thumb and F2 ext
S15	42	70	88.5	M	R	R	7	WC	14 months	2	Wrist ext, F2 flex
S16	45	72	108.9	M	R	B	23	DC	13 months	12	Wrist UD and flex, thumb and F2-3 ext
S17	33	73	77.1	M	R	R	5	WC	37 months	2	Wrist ext, F1-2 ext, thumb abd
S18	44	72	88.5	M	R	R	5	WC	n/a	2	Thumb ext
S19	54	72	88.5	M	R	L	11	DC	n/a	6	F2 flex, thumb add
S20	63	66	81.6	F	R	R	24	DC	6 months	6	F2 ext

^aHand dominance.

^bDiagnosis of WC = writer’s cramp (only writing affected); DC = dystonic cramp (more than one task involved) [31].

^carm sub-scale from the Burke-Fahn-Marsden rating scale [32] with higher scores indicating more severe arm involvement (maximum score = 16).

^dext = extension, flex = flexion, UD = ulnar deviation, abd = abduction, add = adduction, F2-5 = fingers 2-5.