Pseudobursae are irregular recesses around a joint that can occur following a joint replacement or surgery. They usually communicate with the joint but may track considerable distances around the joint. They may be associated with infection but can also be incidental finding.
They may be present in up to 43% patients following hip joint replacements 4.
They are typically described around the hip, and locations include:
- greater trochanteric region: considered most common 2
- supra-acetabular region
- iliopsoas region
Treatment and prognosis
- may be treated conservatively with steroid and anesthetic injections
- the presence of irregular walls, sinus tracts, bone destruction, or debris in the cavity suggest infection
- aspiration and injection of local anesthetic may provide symptomatic relief, and if symptoms recur and if aspiration cultures are negative, steroid injections may help
- 1. Keogh CF, Munk PL, Gee R et-al. Imaging of the painful hip arthroplasty. AJR Am J Roentgenol. 2003;180 (1): 115-20. doi:10.2214/ajr.180.1.1800115 - Pubmed citation
- 2. Berquist TH, Bender CE, Maus TP et-al. Pseudobursae: a useful finding in patients with painful hip arthroplasty. AJR Am J Roentgenol. 1987;148 (1): 103-6. doi:10.2214/ajr.148.1.103 - Pubmed citation
- 3. Cyteval C, Hamm V, Sarrabère MP et-al. Painful infection at the site of hip prosthesis: CT imaging. Radiology. 2002;224 (2): 477-83. doi:10.1148/radiol.2242010989 - Pubmed citation
- 4. Diagnostic Imaging of Musculoskeletal Diseases. Humana Press. ISBN:1588299473. Read it at Google Books - Find it at Amazon