[Femoral superficial vein thrombosis due to a large iliopsoas bursitis secondary to polyethylene wear debris in total hip arthroplasty].

A 76 year old male patient with a history of implantation of a total hip arthroplasty Perfecta (Orthomet(®)), who presented with an iliac fossa mass, increased diameter of the thigh, and pain during hip flexion and extension. CT and ultrasound show the presence of a giant cystic mass in left iliac fossa about 7 cm in diameter next to the prosthesis. A pseudo-tumour secondary to wear debris after placement of a total arthroplasty is rare. We present a case of a large iliopsoas bursitis caused by polyethylene particles, which caused compression and thrombosis of the superficial femoral vein.