Tibiofibular junction of the South African ostrich (Struthio camelus australis)

Journal of Morphology
F K Fuss

Abstract

The tibiofibular junction of the South African ostrich (Struthio camelus australis) consists of the Ligg. tibiofibularia caudale, craniale proximale and distale, obliquum, and interosseum. The motion range of the fibula, respective to the tibiotarsus, averaged 35°. This junction is, however, not freely mobile as there is a resting position from which the fibula can be pronated an average of 14° (counterclockwise motion of the right fibula from the proximal view) and supinated an average of 21°. Flexion and inward rotation of the tibiotarsus causes fibular supination. This behavior is induced by the lateral meniscus (which follows the movements of the femur on the plateau of the tibiotarsus) and the femorofibular joint surfaces. As the fibular attachment of the popliteus muscle cannot migrate medially, due to its relative fixation by the femorofibular joint surfaces, fibula supination (tibiotarsus pronation), caused by contraction of the popliteus muscle leads to an inward rotation of the tibiotarsus relative to the femur. The ligaments impede excessive pro- and supination. Except for the Lig. tibiofibulare craniale distale, all ligaments also comprise fibers taut in intermediate positions-the Ligg. obliquum and interosseum each...Continue Reading

References

Jan 15, 1971·Nature·R T Bakker
Nov 1, 1992·Journal of Morphology·Franz K Fuss, Chris R Gasser

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Citations

Sep 12, 2017·Journal of Avian Medicine and Surgery·Payam Razeghi TehraniAbbas Veshkini
Jan 1, 2015·PeerJ·Kyle P ChadwickJohn R Hutchinson
Aug 24, 2017·Journal of Anatomy·Robert E KambicStephen M Gatesy
Jan 23, 2008·British Poultry Science·R G CooperM El-Shafei
Jul 3, 2007·The Journal of Experimental Biology·Jonas RubensonPaul A Fournier
Dec 18, 2002·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·John R Hutchinson

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