Table 6.

Distribution of semicircular canal malformations for different types of mutations

Defect	SCC normal	PSCC dysplasia	SSCC dysplasia	PSCC + LSCC dysplasia	SCCC + LSCCC dysplasia	All aplastic	All dysplastic
Total	2 (2.5 %)	4 (5.0 %)	5 (6.3 %)	1 (1.3 %)	2 (2.5 %)	63 (78.8 %)	3 (3.8 %)
Truncating	0	0	3 (3.8 %)	0	0	46 (57.5 %)	1 (1.3 %)
Non-truncating	2 (2.5 %)	4 (5.0 %)	2 (2.5 %)	1 (1.3 %)	2 (2.5 %)	17 (21.3 %)	2 (2.5 %)

Number of ears: 80 (patients 12 and 30 excluded); P = 0.004 (χ²)

SCC semicircular canals, PSCC posterior semicircular canal, SSCC superior semicircular canal, LSCC lateral semicircular canal