A fine structural study of the development of the chick flexor digital tendon: A model for Synovial sheathed tendon healing

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Abstract
The development of the synovial sheathed flexor digital tendon in the chick was studied by light and electron microscopy in 12‐day embryos to 22‐day post‐hatched chickens. Areas of specialized connective tissue differentiation were identified in this complex structure consisting of a lubricated synovial sheath, elastic vincula and fibrocartilaginous adaptations on the surface of the tendon. The presence of some of these specialized adaptations may be related to tendon. The presence of some of these specialized adaptions may be related to the specific types of mechanical forces and stresses applied to the developing connective tissue system. This model system appears to be appropriate for the experimental study of tendon injuries related to thehuman hand.