Table 2.

Anatomical measurements collected for 9 specimens in the study.

Specimen	4R	5R	6R	7R	8R	13L	14R	15L	16R	Mean ± SD
OC length (mm)	32.31	33.44	31.41	30.5	36.16	33.09	36.87	32.45	31.95	33.13 ± 2.11
SG length (mm)	14	14.2	n/a	12.54	14.58	13.41	14.62	13.44	12.7	13.69 ± 0.8
SG/OC length	0.43	0.42	n/a	0.41	0.4	0.41	0.4	0.41	0.4	0.41 ± 0.01
MW length (mm)	15.79	15.9	n/a	14.35	16.24	15.2	16.33	15.15	14.97	15.49 ± 0.69
MW vs SG difference	1.79	1.7	n/a	1.81	1.66	1.79	1.71	1.71	2.27	1.81 ± 0.2
% OC basal w/o SG	1.98	3.47	n/a	1.31	0.4	3.41	1.84	2.13	3.29	2.35 ± 0.9
% OC apical w/o SG	9.22	11.33	n/a	11.64	10.26	9.4	12.99	11.37	9.58	10.72 ± 1.33
% OC length at V	59.36	64.74	60.01	59.08	55.56	59.56	n/a	61.14	60.31	59.97 ± 2.54
Frequency at V (Hz)	1035	764	998	1051	1273	1023	n/a	937	982	1000 ± 140

Data collected in 9 cochleae indicate relatively large intersubject variability in OC and SG lengths, but a fairly consistent ratio between the lengths of the two structures. The length of the modiolar wall directly adjacent to the SG differed from the SG length measured at the center of Rosenthal’s canal by less than 2 mm. Dissection error resulted in damage to the basal SG in specimen 6R and precluded measuring SG length. The marker for V was lost during processing of the cochlea and could not be identified in specimen 14R.