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Abstract

HISTORY: During a race, a 35-year-old marathon runner complained of experiencing dull, achy pain in the right groin. After the race, he occasionally experienced radiating pain in the right thigh. The athlete was examined by a general practitioner (GP). During the clinical evaluation, the athlete had no signs of tenderness or swelling. The GP suggested rest and prescribed anti-inflammatory medication.

PHYSICAL EXAMINATION: Ten days later, during training, the athlete felt the same discomfort after a challenging training session. He, then, decided to see an orthopedic physician. At the clinical examination, there was no localized pain. Focal pain was present during weight bearing activities only. Initial x-rays showed no significant abnormality or fracture. However, due to the complaints of the athlete, the doctor suggested additional x-rays and an MRI.

DIFFERENTIAL DIAGNOSIS:

  1. Lumbar radiculopathy
  2. Rectus femoris strain
  3. Abductor strain
  4. Trochanteric bursitis

TEST AND RESULTS:

- X-ray showed a fracture of the middle shaft of the femur

- MRI showed a medial periosteal reaction in the femoral shaft (high fluid signal)

- Pain, especially during internal rotation

- Pain on the affected side with a single-leg stance

- Pain during activity, reproducible on passive range of motion

FINAL / WORKING DIAGNOSIS:

Stress fracture of the middle shaft of the right femur

TREATMENT AND OUTCOMES:

  1. Tolerate weight bearing if no displacement occurs (four months max.)
  2. Treatment by a metabolic physician (Vitamin D deficiency or other)
  3. Continuing follow-up with repeated imaging: Verify resolution and minimize the progression to displacement
  4. Surgery if conservative management fails (see #1-3)
  5. Intramedullary rodding (surgical procedure)

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