Vol. 9, Issue 5, Part D (2023)

Introduction: Unicameral bone cyst is a benign fluid filled cavityy which enlarges over time, resulting in thinning of the bone. These cysts can also be multi-loculated. Usually these cysts are reported in the metaphyseal areas of long bones with open phases. Diagnosis is typically based on x-ray imaging features, age, localisation at proximal humerus and femur and the absence of symptoms until pathological fracture development.

Materials and Methods: This study reports a 10 year old boy, reviewed in Sree Mookambika Institute of Medical Sciences, who presented with pain in the left shoulder and difficulty in doing above head activities for a period of 1 month. On examination, bony tenderness was present over proximal humerus and restriction in the range of movement was present. MRI showed large intramedullary cystic lesion in the proximal metaphyseal region of the left humerus. Inj. Methylprednisolone was given on four sittings 3 weeks apart and series of x-rays were taken on the following timeline.

Result: The clinical and radiological examination confirmed the diagnosis of unicameral bone cyst. There was no evidence of recurrence after 6 months of follow up and the bone regeneration was almost complete.

Conclusion: The management of unicameral bone cyst with infiltration of prednisolone injection is an accepted norm. In our case study Inj. Methylprednisolone gave good healing of the unicameral bone cyst and improvement of the symptoms. This procedure is not expensive, mini-invasive, with low surgical risk and short hospitalization. The steroid injections showed to be an excellent treatment for UBC, with complete healing of the lesions.