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The scientific name for the condition is syndactyly, although this term covers both webbed fingers and webbed toes. Syndactyly occurs when apoptosis or programmed cell death during gestation is absent or incomplete. Webbed toes occur most commonly in the following circumstances: [1] Syndactyly or familial syndactyly; Down syndrome
Acrocephalosyndactyly presents in numerous different subtypes, however, considerable overlap in symptoms occurs. Generally, all forms of acrocephalosyndactyly are characterized by atypical craniofacial, hand, and foot characteristics, such as premature closure of the fibrous joints in between certain bones of the skull, [16] [17] fusion of certain fingers or toes, [16] [18] and/or more than ...
Owls, ospreys and turacos can rotate the outer toe (4) back and forth. [10] Heterodactyl: two toes in front (3, 4) and two in back (2, 1) – the inner front toe (2) is reversed; heterodactyl arrangement only exists in trogons. [20] Syndactyl: three toes in front (2, 3, 4), one in back (1); the inner and middle (2, 3) are joined for much of ...
Polysyndactyly is a congenital anomaly, combining polydactyly and syndactyly, in which affected individuals have an extra finger or toe that is connected, via fusing or webbing, to an adjacent digit. [ 1 ] [ 2 ]
Zygodactyly (from Greek ζυγος, even-numbered) is an arrangement of digits in birds and chameleons, with two toes facing forward (digits 2 and 3) and two back (digits 1 and 4). This arrangement is most common in arboreal species, particularly those that climb tree trunks or clamber through foliage.
Webbing between the second and third finger and between the second and third toes [2] Short fingers and toes (brachydactyly) [4] Broad thumb and/or a broad hallux (big toe) with a valgus deformity (outward angulation of the distal segment of a bone/joint) [6] Hands have a single palmar flexion crease [3]
Syndactyly can be simple or complex. [2] In simple syndactyly, adjacent fingers or toes are joined by soft tissue. In complex syndactyly, the bones of adjacent digits are fused. The kangaroo exhibits complex syndactyly. Syndactyly can be complete or incomplete. In complete syndactyly, the skin is joined all the way to the tip of the involved ...
[1] [2] [5] In particular, syndactyly of the third and fourth fingers or the second, third and fourth toes is termed "syndactyly type 1". [1] The degree of syndactyly may differ across affected individuals, with some exhibiting syndactyly of soft tissues and skin only, and more severe cases exhibiting syndactyly of digital bones.