Three-Dimensional Analysis of the Characteristics of the Femoral Canal Isthmus: An Anatomical Study

Table 2

The main characteristics of the population and the anatomical parameters of the femur and the isthmus.

Items	Male ()		Female ()		Student’s -test		Total ()
	Mean ± SD	Range	Mean ± SD	Range			Mean ± SD	Range
Age (y)	64.84 ± 12.95	15–85	69.67 ± 8.5	50–85	—	0.002	66.33 ± 12	15–85
Height (m)	1.69 ± 0.059	1.48–1.84	1.59 ± 0.061	1.40–1.77	16.929	<0.001	1.66 ± 0.078	1.40–1.84
Weight (kg)	68.59 ± 9.9	43–97	62.35 ± 9.9	37–86	5.884	<0.001	66.66 ± 10.3	37–97
F-length (mm)	437.75 ± 19.81	386–485	406.70 ± 22.04	352–487	14.121	<0.001	428.16 ± 25.03	352–487
F-radius (mm)	1007.30 ± 205.7	616–2029	880.52 ± 171.32	511–1375	6.044	<0.001	968.15 ± 204.12	511–2029
I-diameter (mm)	10.68 ± 1.39	6.60–16.20	10.05 ± 1.71	6.00–14.00	3.93	<0.001	10.49 ± 1.52	6.00–16.20
I-height (mm)	242.6 ± 23	166.22–317.6	221.66 ± 25.46	137.15–284.8	8.21	<0.001	236.13 ± 25.66	137.15–317.6
I-index	0.55 ± 0.046	0.37–0.75	0.54 ± 0.052	0.35–0.68	1.95	0.052	0.55 ± 0.048	0.35–0.75
LI-distance (mm)	117.06 ± 21.69	34.16–197.47	114.66 ± 20.87	63.98–186.25	1.04	0.3	116.31 ± 21.45	34.16–197.47
T-length (mm)	57.63 ± 22.2	7.21–136.83	61.29 ± 22.33	10.71–122.19	−1.54	0.12	58.76 ± 22.28	7.21–136.83
T-index	0.55 ± 0.04	0.42–0.69	0.55 ± 0.044	0.37–0.66	0.765	0.45	0.55 ± 0.04	0.37–0.69
T-length (mm)	60.87 ± 37.11	7.39–545.45	62.44 ± 22.7	11.28–123.97	−0.440	0.66	61.36 ± 33.32	7.39–545.45
AP-angle (degrees)	80.57 ± 4.55	16.27–89.23	81.21 ± 2.79	71.39–89.17	−1.459	0.15	80.77 ± 4.1	16.27–89.23
L-angle (degrees)	84.69 ± 1.96	69.16–90.33	83.89 ± 1.39	79.94–89.38	4.183	<0.001	84.44 ± 1.84	69.16–90.33

The data of the age was nonnormal distribution and was tested using the Mann-Whitney test.