plantar ligaments of metatarsophalangeal joints
Definition: thick, dense ligaments located on the inferior (sole) aspect of the metatarsophalangeal joints, flanked by and connected to the collateral ligaments, forming the plantar portion of the joint capsule; the ligaments are grooved longitudinally (relative to the digit) to accommodate the long flexor tendons of the digit; on each side of the groove they are attached to both the deep transverse metatarsal ligaments and fibrous sheaths of the toes; they are firmly attached to the base of the proximal phalanges, deepening the “socket” of the phalangeal bases to accommodate the heads of the metatarsals, to which they are loosely attached, permitting free movement.
Synonym(s): ligamenta plantaria articulationis metatarsophalangeaeTA
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