Bisphosphonate Therapy in the Management of Symptomatic Melorheostosis of Tibia

Introduction: Melorheostosis is a rare sclerosing bone disease characterized by linear hyperostotic bone dysplasia with its radiological appearance as melting candle wax dripping by its side. It usually affects long bones, especially the lower limb. The exact cause of the disease has not been clearly explained though many theories are available. It is insidious in onset and symptoms being pain, deformity, and joint stiffness. Although there is no definitive treatment, the administration of bisphosphonates dramatically reduces pain and improves the patient clinically. Case Report: We described a case of a 28-year-old female who presented with a history of pain and swelling in her left leg for the past 2 years. The onset of complaints was insidious. On physical examination, there was tender swelling over the shaft of the tibia with irregular borders. Knee and ankle range of movements were normal. Radiographs showed hyperostosis of the proximal two-thirds of the tibia of the left leg with a flowing candle wax appearance. The patient was treated with a single dose of intravenous zolendronic acid and physical therapy. The patient had dramatic alleviation of pain without the need for any further treatment till 1 year follow-up. Conclusion: Although there is no specific treatment available for this disease, the intravenous infusion of zolendronic acid has dramatically improved the patient clinically. Keywords: Melorheostosis, flowing candle wax, bisphosphonates, zolendronic acid.