ABSTRACT
This article presents a rare clinical observation of a bone form of primary hyperparathyroidism in a 16-year-old adolescent complicated by a pathological fracture of the right femur. The features of the given case are: late diagnosis of primary hyperparathyroidism in an adolescent with clinical manifestations;complication of the disease with a pathological fracture, which required two-stage treatment, open repositioning and metal plate osteosynthesis;difficulties in the organization of the examination and treatment of the patient, related to the detection of COVID-19 and his stay in an infectious department;the need for tactical decision on the sequence of surgical treatment of the fracture and its causes – primary hyperparathyroidism. © 2022 Authors. All rights reserved.