What is the appropriate treatment for a non-displaced fracture of the pubic body?

Treatment for Non-Displaced Pubic Body Fractures

Non-displaced pubic body fractures should be managed non-operatively with early functional rehabilitation and weight-bearing as tolerated, as these represent mechanically stable injuries that do not require surgical fixation. 1

Primary Management Approach

Conservative Treatment Protocol

Non-displaced pubic body fractures fall into the category of stable pelvic ring injuries (classified as APC-I or LC-I patterns in the Young & Burgess system). The 2017 WSES guidelines explicitly state that these stable fracture patterns are managed non-operatively, allowing functional rehabilitation and early weight bearing 1. This approach prioritizes:

• Pain management with appropriate analgesia
• Early mobilization to prevent complications of prolonged immobilization (chronic pain, decreased function, thromboembolic events)
• Weight-bearing as tolerated - patients can begin ambulation immediately based on pain tolerance
• Physical therapy for gait training and strengthening

Critical Caveat: Rule Out Hemorrhage First

Despite minimal displacement, you must actively exclude life-threatening hemorrhage before assuming benign course. This is a critical pitfall that can be fatal:

• Non-displaced pubic rami fractures can cause massive hemorrhage from arterial injury (obturator artery, inferior epigastric artery branches) 2, 3
• Elderly patients are at particularly high risk for requiring angioembolization even with mechanically stable fractures 1
• Case reports document exsanguination and death from non-displaced pubic fractures 2

Hemorrhage Assessment Algorithm:

1. Hemodynamic monitoring: Vital signs, serial hemoglobin
2. CT scan with IV contrast if any concern for bleeding (contrast extravasation is highly predictive of need for angioembolization) 1
3. Lower threshold for imaging in elderly patients - they require angioembolization more frequently regardless of apparent stability 1
4. Angioembolization if arterial bleeding identified - highly effective for hemorrhage control 1

Associated Soft Tissue Injuries

Even with minimal skeletal displacement, high-energy mechanisms can cause significant soft-tissue injury:

• Bladder injury occurs in up to 15% of minimally displaced APC-I fractures, particularly after high-energy trauma 4
• Female patients have higher incidence (18% vs 13%) 4
• Intraoperative bladder inspection should be considered if any genitourinary symptoms present
• Urethral injury must be excluded clinically

When Surgery IS Indicated

Non-displaced pubic body fractures do not require fixation unless:

1. Part of an unstable pelvic ring injury with posterior instability (requires posterior fixation; anterior fixation usually unnecessary) 5
2. Symphysis pubis diastasis >2.5 cm (requires plate fixation) 1
3. Dynamic instability demonstrated on stress examination under anesthesia 4

The evidence is clear that most pubic rami fractures do not require stabilization even when part of unstable ring injuries - 88 of 105 obturator ring fractures managed without anterior fixation had no subsequent nonunion or loss of reduction 5.

Functional Outcomes

With appropriate conservative management:

• Union rates approach 95% for stable anterior ring injuries 6
• Early mobilization prevents the chronic pain and functional limitations historically associated with prolonged immobilization 1
• Most patients return to baseline function

Summary Algorithm

For truly non-displaced pubic body fractures:

1. Exclude hemorrhage (especially in elderly, high-energy mechanism)
2. Exclude bladder/urethral injury if genitourinary symptoms
3. Confirm mechanical stability (no posterior ring injury, no symphyseal diastasis >2.5cm)
4. If stable → Conservative management: analgesia + early mobilization + weight-bearing as tolerated
5. No surgical fixation required