Guillaume Mercy, Presenter: Nothing to Disclose

Jean-Louis Brasseur, Abstract Co-Author: Nothing to Disclose

Audrey Massein, Abstract Co-Author: Nothing to Disclose

Philippe A. Grenier MD, Abstract Co-Author: Nothing to Disclose

The patellar tendon is the anatomical and functional extension of the quadricipital tendon. Ultrasound (US) is the first-line imaging of the patellar tendon. Advantages of US compared with MRI include better spatial resolution which helps characterize a lesion, dynamic study, easier detection of vascularity by Doppler. Direct expansions of the quadricipital tendon on the tibia explain why the retraction of a disrupted patellar tendon can be missing. The location of a microtraumatic injury depends on the weakest point of the patellar tendon, which varies according to the age. In young athletes proximal tendinosis (jumper's knee) is the most frequent condition. US can help make the difference with physiological changes of the tendon and provides crucial data if surgery is considered.

Anatomy and function Ultrasonography: how to proceed?US vs MRI? Normal and pathological tendon Microtraumatic injuries: -children and teenagers: Osgood Schlatter and Sinding Larsen Johansson diseases -young athletes: proximal (jumper's knee) or distal tendinosis -mature adults: diffuse tendinosis -impingements: lateral femoral condyle, ossifications, foreign bodies, devices Traumatic injuries: ruptures Other conditions: rheumatismal enthesitis, patella baja and alta, complications of surgery including tendon harvest

http://abstract.rsna.org/uploads/2014/14015647/14015647_kwkn.pdf

Mercy, G, Brasseur, J, Massein, A, Grenier, P, Ultrasonography of the Patellar Tendon: The First-line Imaging.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14015647.html