Table 1.

Age and sex distribution with the mean tibiofemoral angle (TFA ± standard deviation [SD]) and 95% confidence intervals (CIs)

Age in years	Number of limbs	Males	Females	Mean TFA (±SD)	95% CI of TFA
2	34	24	10	1.0 ± 3.2	(−0.12, 2.12)
3	42	26	16	2.3 ± 3.1	(1.36, 3.13)
4	30	16	14	4.3 ± 1.4	(3.77, 4.82)
5	38	20	18	6.7 ± 2.1	(6.00, 7.41)
6	30	18	12	7.9 ± 2.4	(7.01, 8.84)
7	26	14	12	6.1 ± 1.7	(5.37, 6.78)
8	36	20	16	6.2 ± 2.2	(5.41, 6.91)
9	26	18	8	5.5 ± 1.9	(4.73, 6.26)
10	44	28	16	5.4 ± 2.1	(4.75, 6.06)
11	22	12	10	4.9 ± 2.4	(3.85, 5.96)
12	30	24	6	4.8 ± 2.0	(4.06, 5.53)
13	26	16	10	4.8 ± 1.6	(4.19, 5.49)
14	22	16	6	4.7 ± 1.3	(4.11, 5.25)
15	24	20	4	4.6 ± 2.0	(3.79, 5.45)
Total	430	272	158