[Ultrasonography and magnetic resonance tomography (MRI) of tendon injuries].

Both ultrasound and MR imaging have become increasingly important for the assessment of tendon abnormalities. Ultrasound is widely available and is mainly suitable for emergency situations in traumatology and as a screening method. For soft tissue imaging only up-to-date sonographic equipment should be used. Moreover, the examiner's experience is crucial for adequate results. MR imaging is not as easily available. However, it is more reproducible and may be indicated in a preoperative situation. Most publications about sonography and MR imaging deal with the rotator cuff and the Achilles tendon. Fewer investigations relate to the posterior tibial tendon, the extensors of the knee and the proximal and distal biceps tendon. The role of ultrasound and MR imaging in abnormalities of these structures is discussed based on the literature and our own experience.