Symptoms of Slipped Capital Femoral Epiphysis
SCFE typically presents with limping and poorly localized pain in the hip, groin, thigh, or knee in adolescents aged 8-15 years, with pain often exacerbated by physical activity and accompanied by restricted hip motion and sometimes an out-toeing gait. 1
Clinical Presentation
The hallmark symptoms of SCFE include:
- Pain location: Hip, groin, thigh, or knee pain that is often poorly localized and intermittent 1, 2
- Gait abnormality: Limping gait with out-toeing 2
- Activity-related: Pain exacerbated by sports or physical activity 2
- Range of motion: Restricted hip motion, particularly internal rotation 2
Critical Diagnostic Pitfall
Knee pain is a common presenting symptom that frequently leads to delayed diagnosis 3, 1. Many patients present with isolated knee pain without obvious hip symptoms, causing practitioners to focus on the knee and miss the hip pathology. This is one of the most commonly missed diagnoses in children 1.
Patient Demographics
SCFE characteristically occurs in:
- Age range: 8-15 years old (preadolescent and adolescent children) 3, 1
- Body habitus: Typically overweight or obese patients 1, 2
- Gender: More common in boys, though can occur in normal-weight teenage girls 2
Symptom Characteristics
The symptoms are frequently subtle and nonspecific 4, which regularly leads to delays in diagnosis and treatment. The intermittent nature of the pain can be misleading, as patients may have periods of relative comfort between symptomatic episodes 2.
Associated Findings
Physical examination may reveal:
- Limited internal rotation of the affected hip
- External rotation deformity
- Leg length discrepancy in more severe cases
- Obligate external rotation with hip flexion (a pathognomonic sign)
Clinical Context
Early diagnosis is essential because delay in diagnosis regularly leads to increased slippage with heightened risk of vascular damage and irreversible joint damage 4. The success of treatment depends heavily on the extent of slippage at presentation, making prompt recognition of these symptoms critical for preventing complications such as avascular necrosis, chondrolysis, and femoroacetabular impingement 1.
When evaluating any adolescent with hip, groin, thigh, or knee pain—particularly if overweight and with a limping gait—SCFE must be included in the differential diagnosis and bilateral hip radiography should be obtained 1, 2.