Study on the outcome of patients with aseptic femoral head necrosis treated with percutaneous multiple small-diameter drilling core decompression: a retrospective cohort study based on magnetic resonance imaging and equivalent sphere model analysis

Table 7 Clinical information of patients with amputation

Diagnosis	Phase	Post-operative time (months)	Scores						Distribution of collapse area
			VAS		OHS-C		HHS
			Preoperative	Final	Preoperative	Final	Preoperative	Final
SIFN	IIc	9	6	8	20	17	52	44	ASM	PSM	ASL	PSL
SIFN	IIc	9	6	9	18	15	58	46	ASM	PSM	ASL	PSL
SIFN	IIc	12	5	7	20	16	59	51	ASM	PSM		PSL
SIFN	IIc	12	6	8	19	15	59	53	ASM		ASL	PSL
SIFN	IIb	12	7	9	23	19	62	42	ASM	PSM	ASL
SIFN	IIa	20	5	8	24	18	59	43	ASM	PSM	ASL
SIFN	IIc	24	4	8	25	14	58	51	ASM	PSM	ASL
SIFN	IIb	24	7	10	27	16	64	56	ASM	PSM		PSL
IFHN	IIb	12	4	7	30	19	66	58	ASM	PSM	ASL
IFHN	IIc	20	5	8	29	20	69	59	ASM	PSM	ASL

SIFHN steroid-induced femoral head necrosis, IFHN idiopathic femoral head necrosis, ASM anterior superior medial, PSM posterior superior medial, ASL anterior superior lateral, PSL posterior superior lateral

ISSN: 1749-799X