Chung analyzed arterial supply to the developing proximal femur in 150 autopsy specimens (26 weeks gestation to 14 years 8 months) using three perfusion techniques. The study mapped the complete three-dimensional vascular anatomy across all stages of childhood growth to explain the basis of pediatric hip pathology.
Every time you manage a pediatric hip condition — fracture, septic arthritis, DDH reduction. The vascular anatomy in this paper is the reason your decisions matter as much as they do.
When you see a femoral neck fracture in a child, the physis blocks any metaphyseal rescue of the femoral head: the epiphysis is entirely dependent on retinacular vessels crossing the capsule, and those vessels all funnel through one stem at the posterior trochanteric fossa. Compression or disruption of that single artery. By hematoma, capsular distension in septic arthritis, or fracture displacement. Means complete head ischemia with no intraosseous collateral route.
When you see a 5-year-old boy with Legg-Calvé-Perthes disease, this paper explains why: ages 3-10 are a vascular nadir for the anterior and medial femoral neck, and males have a less complete intra-articular anastomotic ring to compensate. Both risk factors converge at exactly the age and sex distribution of LCP. This is not coincidence.
Do not count on the ligamentum teres for meaningful femoral head perfusion in children: it reaches the head in fewer than 30% of specimens and cannot substitute for disrupted retinacular flow.
Chung analyzed arterial supply to the developing proximal femur in 150 autopsy specimens (26 weeks gestation to 14 years 8 months) using three perfusion techniques. The study mapped the complete three-dimensional vascular anatomy across all stages of childhood growth to explain the basis of pediatric hip pathology.
Every time you manage a pediatric hip condition — fracture, septic arthritis, DDH reduction. The vascular anatomy in this paper is the reason your decisions matter as much as they do.
When you see a femoral neck fracture in a child, the physis blocks any metaphyseal rescue of the femoral head: the epiphysis is entirely dependent on retinacular vessels crossing the capsule, and those vessels all funnel through one stem at the posterior trochanteric fossa. Compression or disruption of that single artery. By hematoma, capsular distension in septic arthritis, or fracture displacement. Means complete head ischemia with no intraosseous collateral route.
When you see a 5-year-old boy with Legg-Calvé-Perthes disease, this paper explains why: ages 3-10 are a vascular nadir for the anterior and medial femoral neck, and males have a less complete intra-articular anastomotic ring to compensate. Both risk factors converge at exactly the age and sex distribution of LCP. This is not coincidence.
Do not count on the ligamentum teres for meaningful femoral head perfusion in children: it reaches the head in fewer than 30% of specimens and cannot substitute for disrupted retinacular flow.