Obligatory medical device diagnostics.
- Postpartum hip ultrasonography/ultrasound method according to Graf (ultrasound hip screening: screening U3 (4th-6th week of life); newborns with risk factors early screening between the 3rd and 10th day of life (U2)) – Specificity (probability that actually healthy persons who do not suffer from the disease in question are also detected as healthy by the procedure): 99.76%; Sensitivity (percentage of diseased patients in whom the disease is detected by the use of the procedure, i.e., a positive finding occurs): 77%, i.e. the positive predictive value is relatively low at 49%.
- Pelvic overview radiograph (a. p.; X-ray of the pelvic region; this serves the serves the complete, symmetrical representation of both hip joints including trochanters and femoral necks) from the 2nd year of life; standard procedure for the diagnosis of hip dysplasia and dislocation; the course observation of the X-ray is also in the first place of the imaging investigation
Optional medical device diagnostics – depending on the results of the history, physical examination and mandatory laboratory parameters – for differential diagnostic clarification.
- Arthrography (contrast imaging of joints) in the context of closed hip setting under anesthesia – to exclude an obstacle to reduction and to document the deep head setting into the socket.
- Magnetic resonance imaging (MRI; computer-assisted cross-sectional imaging procedure (using magnetic fields, that is, without X-rays):
- For the diagnosis of dysplasia or dislocation in infancy.
- For suspected femoral head necrosis and to assess the extent of necrosis.
- For documentation of the correct setting of the femoral head in the acetabulum (hip joint or pelvic socket) with the Fettweis cast in place
- Computed tomography (CT; sectional imaging procedure (X-ray images taken from different directions with computer-based analysis):
- Imaging of bony injuries)/arthrography in adults – to determine the extent of deformity.
- Preoperative planning of three-dimensional pelvic osteotomies in adolescents and young adults.
Note: In condition after treatment of hip dysplasia, radiological follow-up until growth completion is indicated.
