Early Avascular Necrosis of the Femoral Head: Relationship of the Findings of Preoperative MRI and the Long-Term Results of Core Decompression.
10.3348/jkrs.1997.37.4.745
- Author:
Dal Soo PARK
1
;
Soon Tae KWON
;
Dong Kweon JEON
;
Gun Young JEONG
;
Hong Lim JANG
;
Sang Ho LEE
;
Eun Hee PARK
;
Chung Gun LEE
;
Moon Gap SONG
;
Jung Eun KIM
;
Yang Hee PARK
Author Information
1. Department of Diagnostic Radiology, Tae Jeon Eul Ji Hospital.
- Publication Type:Original Article
- Keywords:
Hip, MR;
Hip, necrosis
- MeSH:
Decompression*;
Follow-Up Studies;
Head*;
Hip;
Humans;
Magnetic Resonance Imaging*;
Necrosis*;
Prognosis;
Weight-Bearing
- From:Journal of the Korean Radiological Society
1997;37(4):745-750
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To evaluate potential correlation between the extent and site of avascular necrosis (AVN), as determined by preoperative magnetic resonance (MR) imaging, and the development of femoral head collapse. MATERIALS AND METHODS: Using clinical, radiographic and MR imaging criteria, twenty hips in 15 patients were selected for core decompression. Preoperative MR results were classified into three categories: group A, less than 15% involvement of the weight-bearing portion of the femoral head; group B, 15%-30% involvement; group C, more than 30% involvement, according to ARCO staging. We also established three groups according to site of involvement of the femoral head, namely medial, middle and lateral. RESULTS: Of 20 cases, three were stage Ia; two, Ib; four, Ic; three, IIa; two, IIb; and 6, IIc. Ten cases of Ia, Ib, IIa or IIb showed no femoral head collapse during follow-up of at least 24 months, while ten cases of Ic or IIc showed femoral head collapse. CONCLUSION: The prognosis of core decompression in patients with early AVN is related to the area of lesion in the femoral head.
