Table 3.

Summary of Mann-Whitney U test and Spearman’s correlation tests

Mann-Whitney U test of hand dominance against functional outcomes
Outcome measure	Mean (± SD)		p value
	Dominant hand involved (n = 12)	Nondominant hand involved (n = 15)
Forearm rotational arc (degrees)	101 (± 58)	123 (± 39)	0.432
Grip strength (% of uninvolved side)	56 (± 23)	46 (± 24)	0.374
MSTS 1993	94% (± 5%)	98% (± 3%)	0.083
DASH	12 (± 8)	6 (± 4)	0.037

Mann-Whitney U test of hand dominance against functional outcomes
Outcome measure	Mean (± SD)		p value
	Primary (n = 18)	Recurrent (n = 9)
Forearm rotational arc (degrees)	122 (± 41)	96 (± 61)	0.339
Grip strength (% of uninvolved side)	56 (± 18)	39 (± 30)	0.034
MSTS 1993	97% (± 4%)	94% (± 3%)	0.095
DASH	8 (± 7)	10 (± 6)	0.348

Spearman’s correlation of length of resection against outcomes/time to proximal junction union
Factor tested	Correlation coefficient
Forearm rotational arc	0.07
Grip strength	0.33
DASH	0.19
MSTS 1993	0.33
Time to proximal junction union	0.89

MSTS = Musculoskeletal Tumor Society; DASH = Disabilities of the Arm, Shoulder and Hand.