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Related Experiment Videos

Experimental epiphysial distraction producing and correcting angular deformities.

J I Peltonen, E O Karaharju, I Alitalo

    The Journal of Bone and Joint Surgery. British Volume
    |August 1, 1984
    PubMed
    Summary

    Distal radius angular deformities in young sheep can be corrected by asymmetrical distraction, especially when valgus angles are less than 20 degrees. Older sheep showed poor correction, indicating age is a factor in limb deformity correction.

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    Area of Science:

    • Orthopedics
    • Veterinary Medicine
    • Developmental Biology

    Background:

    • Angular deformities of the distal radius can impact limb function.
    • Epiphyseal distraction is a method used to influence bone growth and shape.

    Purpose of the Study:

    • To investigate the effects of asymmetrical epiphysial distraction on distal radius angular deformities in sheep.
    • To evaluate the potential for spontaneous correction and the influence of age on the outcome.

    Main Methods:

    • Induced angular deformities in 15 sheep using asymmetrical epiphysial distraction on the distal radius.
    • Utilized sheep of different age groups (10-20 weeks and >24 weeks).
    • Monitored deformity progression, correction, and bone growth after device removal.

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    Main Results:

    • Medial distraction induced valgus deformities; spontaneous correction occurred in younger sheep with smaller angles (<20 degrees).
    • Older sheep showed limited success in inducing and correcting deformities.
    • Lateral distraction successfully corrected deformities in two cases; premature epiphyseal closure or growth inhibition did not occur.

    Conclusions:

    • Asymmetrical epiphysial distraction can correct distal radius angular deformities in young sheep.
    • Age and the degree of deformity influence the success of correction.
    • Distraction did not negatively impact epiphyseal closure or longitudinal bone growth.