🦴 Chapter 713 · Orthopedic Growth and Development

Nelson Textbook of Pediatrics 22nd Edition | Growth plate physiology, ossification centers, in utero molding, normal variants, and developmental milestones. Key concepts: endochondral vs intramembranous ossification, physeal anatomy, torsional alignment, and functional gait maturation.

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📋 30 Clinical Scenarios — Orthopedic Growth & Development

📇 High‑Yield Review Cards

🩺 Clinical Recognition: Orthopedic Growth & Development

Select a presentation to review diagnostic clues and physiologic vs pathologic findings.

📋 Stepwise Approach: Evaluation of Growth & Development

🔑 Key Principles (Nelson Ch 713)
• Physiologic vs pathologic: In utero positioning deformities (metatarsus adductus, calcaneovalgus) resolve by 3–4 months. Congenital anomalies (malformation/dysplasia) do not.
• Growth plates: Physis, epiphysis, metaphysis, diaphysis. Most longitudinal growth from distal femur, proximal tibia, proximal humerus, distal radius.
• Ossification centers: Present at birth: distal femur, proximal tibia, calcaneus, talus. Secondary centers appear postnatally (Fig 713.1).
• Gait milestones: Head control 3–6 mo; sitting 6–9 mo; crawling 8 mo; pulling to stand 8–12 mo; ambulation 12–18 mo.

    ⚡ Reflex Prompts — Clinical Decisions

    📖 Summary: Orthopedic Growth and Development (Nelson 713)