Abstract：Objective To evaluate the therapeutic effect of MRI-guided core decompression against osteonecrosis of the femoral head. Methods A total of 32 patients who were diagnosed with ONFH at the Third Medical Center of the PLA General Hospital in 2016 were selected. The general information about these patients was collected to ensure that they had no contraindications to surgery before they were subjected to epidural anesthesia and surgery. The visual analogue scale (VAS) and Harris score were used to analyze the effect.MRI was used to observe the size and position of the necrotic area. Results The preoperative VAS score was 5.52±1.14, and Harris total score was 35.8±5.89 (pain 15.26±3.11; function 17.70±4.83; stiffness 2.84±1.95). The VAS score after 6 months was 4.59±0.5, and Harris total score was 62.0±5.42 (pain 29.76±3.27; function 29.06±4.47; stiffness 5.18±1.42), compared with 2.55±0.5 and 80.77±3.78 (pain 37.94±3.02; function 38.4±2.27; stiffness 7.43±1.13) after twelve months. There was statistically significant difference between the preoperative scores and postoperative ones (P<0.05). Conclusions MRI-guided core decompression used for osteonecrosis of the femoral head is technically feasible, accurate and safe. Patients with early osteonecrosis may benefit from such treatment.
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2020, Vol. 31 
