How to Write an Ultrasound Order for Groin Pain
Order "US pelvis transabdominal" or "US hip" with Doppler, specifying the clinical indication as groin pain and requesting evaluation of the hip joint, adductor muscles, pubic symphysis, inguinal canal, and femoral neurovascular structures.
Recommended Order Components
Your ultrasound requisition should include:
- Procedure name: "Ultrasound pelvis transabdominal" or "Ultrasound hip" (both are acceptable terminology)
- Add Doppler: Request duplex Doppler capability as standard 1
- Clinical indication: State "groin pain" plus any specific suspected etiology (hernia, muscle injury, hip pathology)
- Specific areas to evaluate: Request assessment of:
Key Clinical Context
The ACR Appropriateness Criteria rate ultrasound for hip pain as "may be appropriate" (rating 4/9) for chronic hip pain 4, though it's not the first-line modality in that specific context. However, ultrasound excels at detecting muscle injuries, inguinal disruption, and hernias 5, making it highly valuable when these are suspected.
When Ultrasound is Most Useful
Ultrasound demonstrates 96.3% sensitivity for hernia detection (compared to 80% for clinical examination alone) 6. It's particularly effective for:
- Adductor-related pain: If MRI is unavailable or symptoms are acute 7
- Inguinal-related pain: Dynamic ultrasonography should specifically evaluate for hernias and posterior abdominal wall weakness 7
- Equivocal clinical findings: When physical examination is negative but symptoms persist 6
Important Caveats
Always request dynamic evaluation with Valsalva maneuver documented in two orthogonal planes to avoid diagnostic pitfalls 3. The complexity and depth of groin anatomy can be problematic, so a protocol-driven approach ensures comprehensive evaluation 3.
If ultrasound and clinical examination are both negative, patients can typically be managed conservatively—only 5.1% of such cases ultimately required surgery 6. However, if initial conservative management fails or the diagnosis remains unclear, proceed to MRI pelvis for definitive evaluation 7.
What Not to Do
Don't order ultrasound as the sole imaging for suspected intra-articular hip pathology or when advanced cartilage assessment is needed—MRI or plain radiographs are preferred in those scenarios 4, 7.