Figure 9
From: Trochleoplasty in major trochlear dysplasia: current concepts
The recession wedge trochleoplasty surgical technique. A and B: The base of the wedge which is removed should be the same in millimeter that the value of the trochlear bump in order to allow the trochlea to settle into a deeper position, without modifying the trochlear groove. C and D: The correction is obtained after removal of the proximally based wedge by progressively applying a pressure on the trochlea. Fixation is carried out with two 3.5 mm cancellous screws, positionned just laterally to the cartilage surface.