Epiphyseal Growth Plate — Zones & Regulation
Zones: reserve (resting), proliferative, hypertrophic (maturation, degeneration, provisional calcification). Regulation: Ihh/PTHrP feedback loop, GH/IGF‑1 axis, local factors (TGF‑β, BMPs, FGFs, Wnt). Hypertrophic zone is weakest → site of Salter‑Harris fractures. Vascular invasion and endochondral ossification occur at metaphyseal side. Clinical: growth arrest, bar formation, angular deformity after physeal injury; SCFE affects hypertrophic zone. Imaging: physeal widening (rickets), metaphyseal...
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11Which zone of the epiphyseal growth plate is primarily responsible for the proliferation of chondrocytes?
mcqWhat is the primary clinical significance of the hypertrophic zone of the growth plate?
mcqIn the regulation of the epiphyseal growth plate, which factor is primarily responsible for stimulating chondr...
mcqWhich clinical condition is most directly associated with abnormal signaling in the hypertrophic zone of the g...
mcqWhat is the primary role of the Ihh/PTHrP feedback loop in the growth plate?
mcqWhich of the following factors is NOT known to affect the growth plate?
mcqWhat imaging finding is commonly associated with growth arrest in the growth plate?
mcqWhich zone of the growth plate is considered the 'resting' zone and serves as a reservoir for future growth?
mcqWhat is the most significant consequence of a Salter-Harris Type V fracture?
mcqWhich growth plate zone is primarily involved in the process of calcification?
mcqWhat condition is characterized by a failure of normal endochondral ossification, leading to short stature?