Table 7.

Risk factors regarding the cortical index and femoral cortex at levels A in the hips included in the followup study (N = 35)

Sex	Presurgery	Postsurgery	At latest evaluation	p values*	p values†
Cortical index
Male	1.48 ± 0.17	1.55 ± 0.18	1.56 ± 0.23	0.574	0.915
Female	1.50 ± 0.12	1.55 ± 0.12	1.61 ± 0.14
Lateral cortex
Male	4.12 ± 1.56	5.05 ± 2.43	5.33 ± 2.83	0.971	0.789
Female	4.00 ± 1.66	4.82 ± 2.52	5.17 ± 2.38
Medial cortex
Male	4.37 ± 2.47	5.35 ± 3.16	6.13 ± 4.21	0.322	0.478
Female	4.14 ± 1.18	5.85 ± 1.25	7.76 ± 4.24
Osteoporosis
Cortical index
Minimal or Moderate	1.60 ± 0.11	1.66 ± 0.14	1.70 ± 0.18	0.154	0.022
Severe	1.45 ± 0.13	1.51 ± 0.13	1.55 ± 1.17
Lateral cortex
Minimal or Moderate	4.60 ± 1.05	4.90 ± 1.86	5.49 ± 1.56	0.713	0.690
Severe	3.86 ± 1.72	4.92 ± 2.64	5.15 ± 2.82
Medial cortex
Minimal or Moderate	5.00 ± 1.01	6.10 ± 1.17	8.33 ± 6.43	0.575	0.343
Severe	3.97 ± 1.97	5.47 ± 2.51	6.62 ± 3.23
Paprosky bone defect
Cortical index
Types 2–3A	1.51 ± 0.16	1.60 ± 0.16	1.61 ± 0.12	0.472	0.088
Types 3B	1.48 ± 0.13	1.51 ± 0.13	1.57 ± 0.17
Lateral cortex
Types 2–3A	4.17 ± 1.69	5.77 ± 1.69	5.64 ± 1.80	0.236	0.227
Types 3B	3.97 ± 1.56	4.28 ± 2.75	4.94 ± 2.99
Medial cortex
Types 2–3A	4.73 ± 2.08	6.24 ± 2.29	6.66 ± 3.15	0.250	0.483
Types 3B	3.87 ± 1.54	5.18 ± 2.16	7.36 ± 4.97
Fracture type
Cortical index
Type B2	1.54 ± 0.16	1.59 ± 0.17	1.64 ± 0.15	0.737	0.046
Type B3	1.44 ± 0.11	1.51 ± 0.11	1.53 ± 0.20
Lateral cortex
Type B2	4.39 ± 1.91	5.23 ± 2.83	5.86 ± 2.17	0.549	0.139
Type B3	3.70 ± 1.12	4.55 ± 1.97	4.59 ± 2.80
Medial cortex
Type B2	4.59 ± 1.93	5.90 ± 2.27	8.07 ± 5.01	0.365	0.195
Type B3	3.67 ± 1.67	5.36 ± 2.26	5.99 ± 3.05
Stem diameter
Cortical index
13.5–15 mm	1.51 ± 0.16	1.58 ± 0.16	1.64 ± 0.20	0.321	0.043
16.5–18 mm	1.45 ± 0.10	1.50 ± 0.10	1.49 ± 0.09
Lateral cortex
13.5–15 mm	4.36 ± 1.79	5.16 ± 2.83	6.01 ± ± .58	0.115	0.080
16.5–18 mm	3.54 ± 1.07	4.51 ± 1.60	3.94 ± 1.94
Medial cortex
13.5–15 mm	4.54 ± 2.05	5.89 ± 2.30	8.12 ± 4.83	0.137	0.101
16.5–18 mm	3.74 ± 1.26	5.21 ± 2.18	5.27 ± 2.17
Stem length
Cortical index
8 inches	1.51 ± 0.13	1.56 ± 0.13	1.63 ± 1.16	0.555	0.513
10 inches	1.48 ± 0.15	1.54 ± 0.16	1.55 ± 0.20
Lateral cortex
8 inches	3.88 ± 1.53	4.51 ± 2.20	4.73 ± 2.36	0.731	0.306
10 inches	4.20 ± 1.68	5.27 ± 2.63	5.67 ± 2.67
Medial cortex
6–8 inches	4.72 ± 2.04	6.59 ± 2.14	8.41 ± 5.18	0.434	0.029
10 inches	3.83 ± 1.55	4.84 ± 2.06	5.93 ± 2.96

*p values for interaction effect between factors (test of within-subjects effects [Greenhouse-Geisser]); ^†p values for the main risk factors effect of the groups.