Subperiosteal resorption

Osteoclastic bone resorption occurring beneath the periosteum along the outer cortical surface, producing irregular, serrated cortical thinning classically seen on phalangeal radiographs.

Causes

• Hyperparathyroidism

• Renal osteodystrophy

• Vitamin D deficiency (rickets)

• Osteomalacia

• Secondary hyperparathyroidism due to chronic kidney disease