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Skeletal Radiology

, Volume 23, Issue 3, pp 173–179 | Cite as

Meniscal ossification

II. The normal pattern in the tiger knee
  • T. M. Ganey
  • J. A. Ogden
  • N. Abou-Madi
  • B. Colville
  • J. M. Zdyziarski
  • J. H. Olsen
Articles

Abstract

Examination of knee menisci of Bengal tigers revealed ossicles within the cartilaginous anterior horn of each medial meniscus. This ossification was not evident in the neonatal animal, but was present in animals aged 20 months or older. The ossicle appeared prior to the completion of skeletal maturation at the knee, and was composed of normal remodeling trabecular bone. While most animals had a single, variably sized ossicle, multiple ossicles also occurred. The meniscal cartilage apposed to the femoral articulation exhibited a distinct columnar pattern in the region of the ossicle, in contrast to the non-columnar pattern throughout the bulk of the meniscus, including the ossicle side apposed to the tibial plateau. In this particular large mammalian species medial meniscal ossification appears to be a normal anatomical variation that progressively develops following birth, and may serve as a model for the phylogenetic (developmental) theory of etiology.

Key words

Meniscus Anatomy Ossicle Tiger (Panthera tigris

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Copyright information

© International Skeletal Society 1994

Authors and Affiliations

  • T. M. Ganey
    • 1
  • J. A. Ogden
    • 1
  • N. Abou-Madi
    • 2
  • B. Colville
    • 2
  • J. M. Zdyziarski
    • 2
  • J. H. Olsen
    • 2
  1. 1.Shriners Hospital for Crippled Children and the Division of Orthopaedic SurgeryUniversity of South FloridaTampaUSA
  2. 2.Busch Gardens Zoologic ParkTampaUSA

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