Primary infection<unk>  muscle is susceptible to infection from distant sites due to rich blood supply, proximity to overlying retroperitoneal lymphatic channels
Secondary infection
Direct spread/extension via adjacent infection
S. aureus is most common pathogen (80%)<unk>  muscle is susceptible to infection from distant sites due to rich blood supply, proximity to overlying retroperitoneal lymphatic channels
Direct spread/extension via adjacent infection
S. aureus is most common pathogen (80%)
Psoas abscess
Acute Trauma
Renal abscess
Femur fracture
Pyelonephritis
Proximal
Traumatic epididymitis
Intracapsular