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Joints of the hand, X-ray Interphalangeal ligaments and phalanges. Right hand. Deep dissection. Posterior (dorsal) view. The PIP joint exhibits great lateral stability. Its transverse diameter is greater than its antero-posterior diameter and its thick collateral ligaments are tight in all positions during flexion, contrary to those in the metacarpophalangeal joint.
Ectrodactyly, split hand, or cleft hand [1] (from Ancient Greek ἔκτρωμα (ektroma) 'miscarriage' and δάκτυλος (daktylos) 'finger') [2] involves the deficiency or absence of one or more central digits of the hand or foot and is also known as split hand/split foot malformation (SHFM). [3]
type I: 2q34-q36; [4] webbing occurs between middle and ring fingers and/or second and third toes. type II: 2q31; [5] also involves long and ring fingers, but has a sixth finger merged in between. type III: 6q21-q23; small finger is merged into the ring finger. type IV: 7q36; [6] involves all fingers and/or toes.
This term is translated literally as "foot-lock". In fact, although the term fetlock does not specifically apply to other species' metacarpophalangeal joints (for instance, humans), the "second" or "mid-finger" knuckle of the human hand does anatomically correspond to the fetlock on larger quadrupeds.
Some languages have different names for hand and foot digits (English: respectively "finger" and "toe", German: "Finger" and "Zeh", French: "doigt" and "orteil").. In other languages, e.g. Arabic, Russian, Polish, Spanish, Portuguese, Italian, Czech, Tagalog, Turkish, Bulgarian, and Persian, there are no specific one-word names for fingers and toes; these are called "digit of the hand" or ...
complex syndactyly of the index, long and ring finger; symbrachyphalangism; simple syndactyly of the fourth webspace; The deformity of the space between the index finger and the thumb may be variable. Based on this first webspace, three different types of hand deformation can be diffentiated: Type I: Also called a "spade hand".
“When our fingers and toes are submerged in water, the sympathetic nervous system triggers the blood vessels in our fingers and toes to constrict, causing skin wrinkles,” explains Ashley ...
Each finger is provided with two interossei (palmar or dorsal), with the exception of the little finger, in which the abductor digiti minimi muscle takes the place of one of the dorsal interossei. [2] The first dorsal interosseous muscle is larger than the others. Between its two heads, the radial artery passes from the back of the hand into ...