Comparison of clinical and radiologic treatment outcomes of Kienböck’s disease

Table 4 Pre- and post-treatment assessments of radiological parameters evaluating KD progression in all treatment groups

	Pre-Ståhl index		Post-Ståhl index		Pre-Nattrass index		Post-Nattrass index		Pre-radius-scaphoid-angle		Post-radius-scaphoid-angle
	Median	SD	Median	SD	Median	SD	Median	SD	Median	SD	Median	SD
STT (n = 27)	0.37	0.07	0.32	0.08	0.70	0.06	0.69	0.04	59°	6.11	51°	5.35
RSO (n = 14)	0.37	0.1	0.32	0.11	0.70	0.06	0.71	0.08	56°	7.71	63°	5.58
VBG (n = 4)	0.48	0.1	0.44	0.09	0.69	0.01	0.69	0.01	62°	7.48	64°	8.49
RSO and VBG (n = 2)	0.39	0.04	0.30	0.07	0.72	0.04	0.74	0.05	46°	5.66	60°	8.49
Pre- to post-treatment differences
RSO (P value)	0.21^a				0.67^a				0.13^a
VBG (P value)	1.00^a				0.32^a				0.06^a
RSO and VBG (P value)	0.18^a				0.18^a				0.18^a
Estimated clinically relevant difference	0.1				0.1				8°
Sample size calculation	42				24				38

STT scaphotrapeziotrapezoid arthrodesis, RSO radial shortening osteotomy, VBG vascularized bone graft, SD standard deviation
^aWilcoxon test

ISSN: 1749-799X