Table 3.

Patient demographic information and size of the IFSZ, comprehensive IFSZ, and PSSZ

Patient number	Demographic information						Size of the safe zone
	Age in years	Sex	Standing PT in °	Sitting PT in °	PI in °	Femoral head diameter in mm	Standing IFSZ	Sitting IFSZ	Comprehensive IFSZ	PSSZ
1	51	M	3	60	53	36	434	910	261	43
2	53	F	15	44	65	36	905	1278	503	232
3	21	F	12	23	41	36	820	438	179	27
4	52	M	-1	43	44	36	673	1008	332	54
5	38	F	16	32	58	36	636	349	228	47
6	40	M	1	21	39	36	1010	1920	324	145
7	57	M	1	58	41	36	554	1032	302	59
8	62	F	-9	61	70	36	729	1884	265	49
9	58	M	-4	25	30	36	734	1400	261	66
10	57	F	10	26	39	36	742	567	227	38

IFSZ = impingement-free safe zone; PSSZ = patient-specific safe zone; PT = pelvic tilt; PI = pelvic incidence.