Jumps back to the case selection view.

  • Age: 52
  • Sex: female
  • Medical history:

    Pain in the lumbar spine and in the left buttock - local infiltration with steroids (3x) by local physician. Afterward worsening of pain, fever. Hospitalisation because of an abscess of the left buttock area (S. aureus). Surgical drainage was performed and antimicrobial therapy was initiated. Back pain and deep buttock pain persisted.


    Elevated CRP: 120 mg/l.

  • Clinical findings: Tender left sacroiliac joint. Pain gets worse with excercise.

Displays clinical information about the current case.


Displays this help text. Click to exit.

1: Buttock pain and elevated CRP

Splits the screen in two sections. The left part shows the current image series. In the right section, any other series can be selected from the thumbnail bar. Click this button to exit the split view.


Starts audio commentary and detailed explanations about the case.


Thumbnail bar: Displays icons for each series of images, as well as questions and summary. Questions must be answered in order to make further series visible. Questions can only be answered once. The correct solutions are displayed at the end of the case. The pictogram bar can be scrolled to the right and left.


Septic sacroiliitis

The key to the diagnosis of septic sacroiliitis is the gross destruction of the joint surfaces of the left sacroiliac joint. Osteitis is very pronounced, there is enhancement of paramagnetic contrast medium and pus in the joint space and the autochthonous musculature of the back is also affected.