Abstract
Trochleadysplasia is the main static risk factor for patella dislocation due to the alteration of patellofemoral congruency. In a normal patellofemoral joint the trochlear sulcus is more or less concave from proximal to distal and works as a guide rail for the kneecap, keeping it on track. Characterizing for a dysplastic trochlea is the flat or even convex shape of the “sulcus” and the superelevation of the proximal entry—the trochlear bump. Usually this is caused by dysplastic central and dys- or hypoplastic medial portions of the trochlea, whereas the lateral portion is commonly normal. These anatomic factors produce an alteration of patellofemoral kinematics with the consequences of lateral patella dislocation. The presence of a dysplastic trochlea groove in 85% of patella dislocation documents the importance of this pathology [1–4]. For further details regarding anatomy and biomechanics of trochleadysplasia see chapter XY.
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Dirisamer, F., Patsch, C. (2020). Trochleoplasty Techniques: Sulcus Deepening acc. Bereiter. In: Dejour, D., Zaffagnini, S., Arendt, E., Sillanpää, P., Dirisamer, F. (eds) Patellofemoral Pain, Instability, and Arthritis. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-61097-8_27
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DOI: https://doi.org/10.1007/978-3-662-61097-8_27
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