Complete loss of extension function of fingers, thumb and palate

The complete loss of extension function of the fingers, thumb and palate is one of the clinical symptoms of hand extensor tendon injury. The finger extension system is a complex of tendon and fascia, aponeurosis, and ligament. Its function and structure are far more complicated than that of the flexor tendon system. It is anatomically called dorsal aponeurosis, also known as extensor apparatus ).

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