Short follow-up evaluation of proximal femoral varus osteotomy for treatment of Legg–Calvé–Perthes disease

Journal of Orthopaedics and Traumatology

Official Journal of the Italian Society of Orthopaedics and Traumatology

Table 1 Pre- and postoperative results for the 23 patients with unilateral Legg–Calvé–Perthes disease who were treated using a proximal femoral varus osteotomy procedure

Patient no.	Age	Catt. class	Herr. class	Pre. op. EEI	Post. op. EEI	Pre. op. WCEA	Post. op. WCEA	Pre. op. NSA	Post. op. NSA	Pre. op. LHS	Post. op. LHS
1	6	III	B	10.6	7.1	25.1	38.1	140	119.5	57	94
2	6	III	B	10.3	7.2	30.3	39	139	118.7	41	90
3	7	III	B	10.4	7.3	30.1	38.6	137.2	115.6	60	94
4	7	III	B	10.5	7.1	30.2	38.2	137	116.1	60	94
5	9	III	B	11.4	7.4	25.2	35.4	133.2	115	54	93
6	9	III	B	12.1	7.2	20.4	37.6	136	117.2	57	89
Mean				10.88	7.22	26.88	37.81	137.07	117.02	54.8	92.33
Significance (S)				0.027		0.028		0.028		0.027
7	6	III	BC	13.1	9.2	22	33.1	139	119.8	43	82
8	6	III	BC	17.2	10.2	27	34	138.5	118	48	91
9	6	III	BC	15.5	7.2	25	32.1	136	115.2	46	78
10	6.5	III	BC	17.6	8.1	28.3	33	138	118.3	44	88
11	6.5	III	BC	13.5	9.5	23	32.1	136.7	118	55	90
12	6.5	III	BC	13.5	7.3	23.4	30.3	138	116.8	44	92
13	7	III	BC	14.2	9.1	20.5	33.2	136.1	115.1	50	90
14	7	III	BC	16.3	9.5	25.4	31.4	140	119	56	87
15	8	III	BC	18.1	11.1	23.3	32.1	134	117	42	94
16	8	III	BC	19.1	8.1	26.3	31.1	134	115.6	45	86
Mean				15.81	8.93	24.4	32.2	137.0	117.3	47.3	87.8
Significance (S)				0.005		0.005		0.005		0.005
17	11	IV	C	60.2	40.1	21	29.5	138.1	116	35	44
18	11	IV	C	70.3	50.2	20.2	27.2	137.5	110	31	40
19	11.5	IV	C	80.3	75.1	20.1	27.8	138.1	118	32	41
20	10	IV	C	79.1	26.1	21.1	26.1	136	115	34	90
21	9	IV	C	75.2	27.2	22.2	27.2	138	117	36	87
22	7.5	IV	C	77.8	29.1	20.1	30.6	138.5	117	37	86
23	7	IV	C	65.6	28.3	21.5	30.5	137.5	116.5	36	90
Mean				72.64	39.44	20.89	28.41	137.67	115.64	34.43	68.29
Significance (S)				0.018		0.018		0.017		0.017

Mean patient age: 7.8 years old; age range: 6–11.5 years old
Patient no patient number, Catt. class Catterall classification, Herr. class Herring classification, Pre. op. EEI preoperative epiphyseal extrusion index, Post. op. EEI postoperative epiphyseal extrusion index, Pre. op. WCEA preoperative Wiberg’s central edge angle, Post. op. WCEA postoperative Wiberg’s central edge angle, Pre. op. NSA preoperative neck–shaft angle, Post. op. NSA postoperative neck–shaft angle, Pre. op. LHS preoperative Larson (Iowa) hip score, Post. op. LHS postoperative Larson (Iowa) hip score, S significant, Ns nonsignificant