Congenital limb deficiency in Japan: a cross-sectional nationwide survey on its epidemiology

Table 3 Classification of congenital limb deficiency

	Upper limbs			Lower Limbs			Total
		Number of deficiencies	%		Number of deficiencies	%	Number of deficiencies	%
Longitudinal	Radial deficiency	110	24.9	Tibial deficiency	33	17.2
	Ulnar deficiency	27	6.1	Fibular deficiency	37	19.3
	Not classifiable	1	0.2	Not classifiable	1	0.5
	Subtotal	138	31.2	Subtotal	71	37.0	209	33.0
Transverse	Shoulder, Upper arm, Elbow	16	3.6	Hip, Thigh, Knee	2	1.0
	Forearm, Wrist	41	9.3	Lower leg, Ankle	4	2.1
	Hand	141	31.9	Foot	54	28.1
	Unknown	3	0.7	Unknown	1	0.5
	Subtotal	201	45.5	Subtotal	61	31.8	262	41.3
Intercalary	Phocomelia	5	1.1	Proximal femoral focal deficiency	7	3.6
Intercalary	Subtotal	5	1.1	Subtotal	7	3.6	12	1.9
Central	Split hand	75	17.0	Split foot	32	16.7
Central	Subtotal	75	17.0	Subtotal	32	16.7	107	16.9
Other finger column deficiency		23	5.2		21	10.9	44	6.9
Total		442	100		192	100	634	100

ISSN: 1471-2474