M89.35

Clinical Causes: Chronic mechanical stress or overuse, especially in athletes or individuals engaged in repetitive activities Bone diseases such as osteitis deformans (Paget’s disease), which can lead to abnormal bone growth Nutritional deficiencies that affect bone metabolism, like vitamin D deficiency Genetic factors that predispose to abnormal bone development Infections or inflammatory conditions impacting bone tissue Tumors, either benign or malignant, that stimulate abnormal bone growth

Key Symptoms: Localized swelling or a palpable thickening in the thigh region Pain or discomfort in the affected area, especially during physical activity Reduced range of motion or stiffness in the hip or thigh In some cases, a visible deformity or asymmetry in the limb Weakness in the affected limb that affects walking or standing Possible presence of a lump or hard mass upon physical examination

Diagnosis Path: Physical examination to assess swelling, tenderness, and range of motion Imaging tests such as X-rays to visualize the bone structure and identify abnormal thickening MRI or CT scans for detailed evaluation of soft tissue involvement and to determine the extent of hypertrophy Laboratory tests, if an underlying metabolic or infectious cause is suspected Biopsy in cases where tumors or abnormal growths are identified

Treatment Protocols: Conservative management with rest and activity modification to reduce stress on the affected femur Physical therapy to strengthen surrounding muscles, improve mobility, and reduce discomfort Medications to manage pain or inflammation, such as NSAIDs Treating underlying conditions such as metabolic deficiencies or infections Surgical intervention, including osteotomy or removal of abnormal bone tissue, in severe or refractory cases Regular monitoring through follow-up imaging to assess progression or resolution