• Clinical science

Pelvic fracture

Abstract

Pelvic fractures most often occur in patients with multiple trauma caused by impact injuries such as car accidents or falls. Patients present with pelvic pain, reduced range of motion, and hematomas. Concomittant injuries such as urethral injury are common. The pelvic stability of every patient with multiple trauma must be checked, as shifted pelvic injuries tend to lead to extensive intraperitoneal and retroperitoneal bleeding, which can lead to hemorrhagic shock or death. The treatment for stable fractures is often conservative, with short-term bed rest and subsequent pain‑adapted mobilization. Unstable pelvic ring fractures with open fractures or significant bleeding require surgery for hemorrhage control, external fixation. This is followed by definitive fixation with plates or screws after the patient becomes hemodynamically stable. Alongside other possible complications, there is a significantly increased risk of thrombosis, and prophylaxis should be administered accordingly.

Epidemiology

References:[1][2][3]

Epidemiological data refers to the US, unless otherwise specified.

Etiology

  • High speed car and motorcycle accidents
  • Falls, especially in the elderly

References:[4]

Classification

Tile classification of pelvic fractures

  • Classification is based on fracture location and remaining stability of pelvic ring
  • Type A: stable or minimally displaced
  • Type B: pelvic ring fractures that are rotationally unstable and vertically stable (anterior and posterior pelvic ring affected)
    • Type B1: symphysic diastasis (“open-book” injury; external rotation)
    • Type B2: lateral compression injury (internal rotation)
    • Type B3: bilateral fractures
  • Type C: injury of the pelvic ring with rotational and vertical instability (The posterior pelvic ring is completely unstable)

Clinical features

  • Pelvic pain caused by movement, weightbearing, and compression of the iliac crests
  • Tilted pelvis and unequal leg length with reduced range of motion in the hip joint
  • Pelvic instability
  • Labial, scrotal, flank, and inguinal hematomas
  • Concomitant injuries may occur

An isolated unilateral anterior fracture of the pelvic ring may exhibit fairly mild symptoms!

References:[1][4][5][6][3][7]

Treatment

  • General
    • Adequate resuscitation and stabilization
    • Prompt pelvic stabilization with an external binder
  • Conservative treatment (type A)
    • Indication: stable pelvic fracture
    • Methods: bed rest, analgesia, thrombosis prevention, early physical therapy, periodic blood pressure and hematocrit check
  • Surgical treatment (type B/C)
    • Indication: open or unstable fractures, complications (e.g., urological injury), hemorrhage
    • Procedures
      • Emergency surgery in the case of massive bleeding: angiography with embolization of affected blood vessels, external fixation ., or pelvic C-clamp if needed
      • Definitive surgical treatment of the pelvic fracture and post-intensive care stabilization: stabilization and refixation of dislocated fragments, employing plates or screw external or internal fixation (for hemodynamically stable patients)
      • Rapid treatment of concomitant injuries (urinary tract, sphincter, intestinal injuries)

References:[1][8][9]

Complications

A pelvic injury always requires thrombosis prevention because of the high risk of thrombosis associated with it!

References:[6][9]

We list the most important complications. The selection is not exhaustive.