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Related Experiment Videos

Epiphyseal tilt produced by experimental overload

P Tschantz, W Taillard, P J Ditesheim

    Clinical Orthopaedics and Related Research
    |March 1, 1977
    PubMed
    Summary

    Segmental resection of the radius in growing dogs causes distal ulna overload and epiphyseal tilt. However, radiographic and histologic studies show spontaneous realignment and growth restoration within months.

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    Area of Science:

    • Orthopedics
    • Veterinary Medicine
    • Developmental Biology

    Background:

    • Segmental resection of the radius in growing animals can lead to secondary orthopedic complications.
    • Mechanical overload on the distal ulna growth plate is a potential consequence.

    Purpose of the Study:

    • To investigate the effects of radius resection on the distal ulna epiphyseal plate in growing dogs.
    • To characterize the radiographic and histologic changes following mechanical overload.

    Main Methods:

    • Segmental resection of the radius diaphysis in growing dogs.
    • Radiographic follow-up studies to assess bone alignment.
    • Histologic examination of the distal ulna epiphyseal plate.

    Main Results:

    • Mechanical overload caused progressive tilt of the distal ulna epiphysis.
    • Histology revealed fissures in the epiphyseal plate, leading to cartilage disorganization and necrosis.
    • Spontaneous realignment and rebuilding of a normal epiphyseal line occurred within 2-3 months.

    Conclusions:

    • The distal ulna epiphyseal plate demonstrates resilience and capacity for self-correction following radius resection.
    • Histologic changes, including necrosis and reabsorption, are followed by regeneration and axis correction.

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