SCFE — Loder Classification & Fixation
Loder classification: **Stable** (able to walk, even with aids) vs **Unstable** (non‑ambulatory) — strongest predictor of AVN. Typical patient: obese adolescent (boys > girls), endocrine risk (hypothyroid, GH therapy). Imaging: AP pelvis and frog‑leg lateral; Klein’s line, Trethowan sign; quantify slip by **Southwick angle**. Treatment: **In‑situ single‑screw fixation** for stable slips; **urgent gentle reduction and pinning** for unstable slips in theater with minimal manipulation. Consider **c...
Practised by MCQ
10What is the primary factor that differentiates stable SCFE from unstable SCFE according to the Loder classific...
mcqWhat is the recommended treatment for a stable SCFE?
mcqWhich imaging technique is primarily used to assess SCFE?
mcqIn the context of SCFE, what does the Southwick angle measure?
mcqWhat is the most significant risk factor for developing SCFE?
mcqWhat is the risk of avascular necrosis (AVN) in unstable SCFE even with appropriate management?
mcqWhich of the following is NOT a typical presentation of unstable SCFE?
mcqWhich of the following statements about in-situ fixation in stable SCFE is correct?
mcqWhich factor significantly increases the risk of contralateral SCFE in a patient with SCFE?
mcqWhat is the critical rule to remember regarding the management of stable SCFE?