Palmar Aponeurosis

The palmar aponeurosis 0r palmar fascia is the fascia that  invests the muscles of the palm. It consists of central, lateral, and medial portions.

The central portion occupies the middle of the palm, is triangular in shape, and of great strength and thickness.

The lateral and medial portions of the palmar aponeurosis are thin, fibrous layers, which cover, on the radial side, the muscles of the ball of the thumb, and, on the ulnar side, the muscles of the little finger.

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