Legg–Calvé–Perthes disease (LCPD)

disruption of blood flow to the head of the femur. Due to the lack of blood flow, the bone dies (osteonecrosis or avascular necrosis) and stops growing.

It can produce a permanent deformity of the femoral head, which increases the risk of developing osteoarthritis in adults.

Target- miniature, toy, and small-breed dogs, and has a genetic basis in Manchester terriers. Moreover, most dogs affected with Legg-Calvé-Perthes Disease are five to eight months in age.

Radiograph finding:
flattening / irregulatity of femoral head
area of decrease opacity in femoral epiphysis, metaphysis
Pathologic fractures of epiphysis occur
remodeling of femoral head cause -coxafemoral joint widening , subluxation with remodeling acetabulum
secondary osteoarthritis






https://www.petmd.com/dog/conditions/musculoskeletal/c_dg_legg_calve_perthes_disease