Muscle haematoma commonly occurs after blunt trauma, however usually in the sports setting1. High impact pressures disrupt muscular vasculature, and this can cause build up of blood or a haematoma.
Particular attention needs to be paid to ensure that there the haematoma does not cause compartment syndrome. Compartment syndrome is a condition where increased pressure within an osseofascial compartment exceeds the systolic blood pressure. If left untreated, this causes decreased perfusion and resulting ischaemia and necrosis. Definitive management for compartment syndrome consists of a fasciotomy which relieves the pressure within the muscle compartment, restoring blood flow to the limbs.
Comminuted pelvic fractures are associated with blunt trauma - classically high speed motor vehicle accidents, however falls from buildings are also implicated2. Pelvic fractures can be life threatening because they are associated with retroperitoneal haematoma and haemorrhagic shock.
Definitive management of haemodynamically unstable patients with pelvic fractures involves either surgical fixation and surgery or radiological arterio-embolisation to reduce haemorrhage.
Case contributed by A/Prof. Pramit Phal.