Search for other papers by Cécile Batailler in
Google Scholar
PubMed
Search for other papers by Philippe Neyret in
Google Scholar
PubMed
pictures) corresponded to the contours of the condyles. The curve directly posterior to these lines corresponds to the trough of the trochlear groove (yellow star). Crossing sign On conventional radiographs, the line which represents the
Istituto Ortopedico Rizzoli, Laboratorio di Biomeccanica e Innovazione Tecnologica, Bologna (BO), Italy
Search for other papers by Stefano Zaffagnini in
Google Scholar
PubMed
Istituto Ortopedico Rizzoli, Laboratorio di Biomeccanica e Innovazione Tecnologica, Bologna (BO), Italy
Search for other papers by Alberto Grassi in
Google Scholar
PubMed
Search for other papers by Gianluca Zocco in
Google Scholar
PubMed
Search for other papers by Michele Attilo Rosa in
Google Scholar
PubMed
Search for other papers by Cecilia Signorelli in
Google Scholar
PubMed
Istituto Ortopedico Rizzoli, Laboratorio di Biomeccanica e Innovazione Tecnologica, Bologna (BO), Italy
Search for other papers by Giulio Maria Marcheggiani Muccioli in
Google Scholar
PubMed
David Dejour. 2 The three radiographic signs on a true lateral radiograph that characterise dysplasic joints are: (1) the ‘crossing sign’, which is when the line of the trochlear sulcus crosses the anterior outline of the femoral condyles; (2) the
Search for other papers by Carol C. Hasler in
Google Scholar
PubMed
Search for other papers by Daniel Studer in
Google Scholar
PubMed
knees may even be decreased. 5 True lateral radiographs allow classification of the type and degree of trochlear dysplasia, most commonly according to the principles stated by Déjour: shallow or missing sulcus (crossing sign), a flat or convex
