Treatment of solitary bone cysts at the proximal end of the femur - 10-year experience

Abstract

Solitary bone cysts are diagnosed in almost every bone, with the humerus and femur occupying almost 70% of cases. In 80% of patients, fracture is the first symptom.
 The aim of this study is to share and analyze our results of surgical treatment of solitary bone cyst localized in the proximal femur.
 MATERIALS AND METHODS: Ten children with a solitary bone cyst at the proximal femur were operated and followed up in our hospital from 2011 to 2021. LCP Ped hip plate 1300 was used in 9 of the patients, and one of them was treated with intralesional Cortizone injections. Three years later, the bone lesion recurred and the cavity was filled with a synthetic bone substitute.
 RESULTS: In nine of the ten patients treated with LCP Ped hip plate 1300, the mean preoperative NSA of 112.86° was corrected to a sustained postoperative NSA of 138.14°. In two of the cases fixed with LCP Ped hip plate 1300 5.0mm there was a limb length discrepancy which necessitated contralateral distal femoral epiphysiodesis.
 CONCLUSION: Solitary bone cyst in the proximal femur needs special attention and each case should be evaluated individually.
 Synthesis with the LCP pediatric hip plate in pathologic fractures allows stability, early and complete consolidation with healing of the cyst, anatomic repair of the proximal femur with low risk of avascular necrosis, and achievement of optimal functional results.