osteitis fibrosa CHORUS

Description: secondary to hypocalcemia and hyperphosphatemia followed by increased parathormone production
* subperiosteal bone resorption
o radial aspect of phalanges, distal clavicle, medial tibia plateau, medial humerus neck, distal ulna, phalangeal tufts, lamina dura of teeth
* subchondral and subligamentous bone resorption
o widening of symphysis pubis, SI joints
o resorption of ischial tuberosity
* spotty deossification of the skull ("wooly", "salt and pepper")
* metaphyseal fractures, slipped epiphyses
* brown tumor + chondocalcinosis
o more common in primary hyperparathyroidism