Superficial Transverse Metacarpal Ligament
The Transverse Ligament of the Palmar Aponeurosis (TLPA) is a thin band of transverse fibers of the distal portion of the palmar aponeurosis The palmar aponeurosis (palmar fascia) invests the muscles of the palm, and consists of central, lateral, and medial portions. Structure The central portion occupies the middle of the palm, is triangular in shape, and of great strength Its apex i .... It runs deep and transverse to the longitudinally oriented pretendinous bands of the palmar fascial complex, and serves as an attachment point for the septa of Legueu and Juvara. The TLPA is also known as the "Ligament of Skoog". It should not be confused with the Natatory Ligament (also known as the "Superficial Transverse Metacarpal Ligament"), which runs parallel and distal to the TLPA, forming the webbing in between the bases of the fingers. References Ligaments of the upper limb {{ligament-stub ...
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Palmar Aponeurosis
The palmar aponeurosis (palmar fascia) invests the muscles of the palm, and consists of central, lateral, and medial portions. Structure The central portion occupies the middle of the palm, is triangular in shape, and of great strength Its apex is continuous with the lower margin of the transverse carpal ligament, and receives the expanded tendon of the palmaris longus. Its base divides below into four slips, one for each finger. Each slip gives off superficial fibers to the skin of the palm and finger, those to the palm joining the skin at the furrow corresponding to the metacarpophalangeal articulations, and those to the fingers passing into the skin at the transverse fold at the bases of the fingers. The deeper part of each slip subdivides into two processes, which are inserted into the fibrous sheaths of the flexor tendons. From the sides of these processes offsets are attached to the transverse metacarpal ligament. By this arrangement short channels are formed on the front ...
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