A potential bursal space between the psoas fascia and the overlying retroperitoneal connective tissue, forming the outer boundary of the psoas compartment. Fluid in this space indicates psoas abscess, iliopsoas bursitis, or retroperitoneal haematoma.
The psoas fascial bursa space is where iliopsoas haematoma accumulates in anticoagulated patients, producing femoral nerve compression as the blood tracks distally within the psoas compartment. CT of the psoas fascia space identifies the extent of haemorrhage or abscess. The compartment is decompressed by reversal of anticoagulation or CT-guided drainage.
Anticoagulant-related haemorrhage into the psoas fascial compartment producing femoral neuropathy with anterior thigh numbness and quadriceps weakness, managed by anticoagulant reversal and monitoring.
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