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Condition/Disorder Synonyms

  • Iliac crest contusion

  • Subcutaneous contusion

ICD-9-CM Code

  • 924.01 Contusion of hip

ICD-10-CM Code

  • S70.00XA Contusion of unspecified hip, initial encounter

Preferred Practice Pattern

Key Features


  • Direct trauma/blow to iliac crest causing immediate pain and debilitation1

  • Acute pain and bruising (hematoma) along the iliac crest to the bone and surrounding muscles

Essentials of Diagnosis

  • Subcutaneous contusion, graded I to III

  • Acute onset from initial trauma; direct blow to unprotected ilium

    • Internal muscular bleeding and swelling can/will occur within minutes or hours of injury

    • Pain radiating to the internal and external oblique muscles

    • Possible parasthesia over anterolateral thigh

General Considerations

  • In younger children, concern must be on a slipped growth plate

  • Stress fractures or blood supply disruption to the hip may show up later

  • Wearing of a hip pad in sports, to limit contusion

  • Can lead to myositis ossificans2


  • Younger athletic population, direct hot from helmet or fall

  • Can be seen in older adults secondary to a fall or car accident

Clinical Findings


  • Hematoma1

  • Point tender with palpation over iliac crest and associated muscles

  • Crepitus felt during palpation

  • Muscle spasm noted

  • Pain with AROM hip flexion, hip abduction, trunk rotation, trunk flexion

  • Swelling

  • Redness

  • Ecchymosis, if caused by direct trauma

Functional Implications

  • Antalgic gait

  • Painful end ranges during ambulation

  • Decreased weight bearing on the involved side with increased weight bearing on the unaffected extremity

  • Pain and weakness as ITB passes over greater trochanter

  • Pain limiting functional activities (i.e., ADLs, physical and athletic activities)

  • Difficulty sleeping on affected side

Possible Contributing Causes

  • Trauma

  • Fall on side

  • Blood thinner medication, increases internal bleeding

Differential Diagnosis

  • Ilium fracture, other avulsion fracture

  • Iliotibial band syndrome

  • Avascular necrosis

  • Sacral iliac dysfunction

  • Greater trochanteric bursitis

  • Lumbar radiculopathy

  • Tendinitis of gluteus medius, gluteus maximus

  • Snapping hip syndrome

  • Sciatica

  • Femoral neck stress fracture

  • Lumbar disk herniation

  • Lumbar degenerative disc disease

  • Lumbar spinal stenosis

  • Hip arthritis

  • Septic arthritis

  • Metastatic tumor

  • Inguinal and femoral hernia

  • Hip labral issue

  • Piriformis syndrome

  • Muscle strain (gluteus minimus, internal oblique, external oblique)

Means of Confirmation or Diagnosis


  • Radiographs of ilium

  • Radiographs of spine and hip

  • MRI for soft tissue and/or for fracture

  • Bone scan for stress fracture and hip necrosis

  • Diagnostic ultrasound



  • Corticosteroid injection 4...

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