2015 ISAKOS Biennial Congress ePoster #1905

Trochlear Dysplasia-Congenital Anomaly or Biomechanical Development

Zlatko Temelkovski, MD, PhD, Skopje MACEDONIA, NORTH
University clinic for orthopaedic surgery, Skopje, MACEDONIA

FDA Status Not Applicable

Summary: The occurrence of the trochlear dysplasia in the patelofemoral joint is due to the influence of the DELPECH law as the only possible mechanical theory of the appearance of the trochlear dysplasia in the later stage of the childhood.

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Abstract:

TROCHLEAR DYSPLASIA-CONGENITAL ANOMALY OR BIOMECHANICAL DEVELOPMENT

Zlatko Temelkovski
University Clinic for Orthopedic Surgery-Skopje, Macedonia

The aim of this presentation is to show the appearance of trochlear dysplasia as one of the most difficult pathologic findings in patellar instability. This article is showing the real cause for developing of trochlear dysplasia.

Materials And Methods

An echo sonography has been performed on 80 toddlers with knee flexion from 30 to 60 degrees in order to determine the degree of trochlear dysplasia with toddlers. A 7megaHz-probe has been used, which was tangentially placed with the reference to the FP joint.

Results

A flat trochlea has been registered with all of the toddlers from 3, 6 and 9 months, during the echo sonography of the patelofemoral joint with 30 and 60 degrees flexion and a tangentially placed probe. This high percentage of dysplastic trochlea does not correspond with the results from the actual orthopedic practice and the frequency of the trochlear dysplasia outbreak.

Conclusion

The occurrence of the trochlear dysplasia in the patelofemoral joint is due to the influence of the DELPECH law as the only possible mechanical theory of the appearance of the trochlear dysplasia in the later stage of the childhood. Consequently, the trochlear dysplasia is not a congenital anomaly but an anomaly developed as a result of the lowered pressure of the trochlear grove.