Also found in: Medical.


Located behind an axis of the body, as the lateral aspect of the lower leg or the medial aspect of the upper arm.

post·ax′i·al·ly adv.


1. (Anatomy) situated or occurring behind the axis of the body
2. (Anatomy) of or relating to the posterior part of a vertebrate limb


(poʊstˈæk si əl)

pertaining to or situated behind an axis of the body, esp. the posterior side of the axis of a limb.
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References in periodicals archive ?
Ademas, en el sindrome de BarnetBiedl se presentan polidactilia postaxial y displasia renal, y en el de Alstrom los pacientes generalmente tienen el intelecto normal, sordera, cardiomiopatia y diabetes mellitus; estas caracteristicas no las tienen los afectados por SC.
Therefore, we omitted measurements of the postaxial disk seta, the axial disk seta, and all radial disk setae (RDS) except the medially placed RDS-5, which in most species was easy to measure because of its greater length (Fig.
Postaxial polydactyly (hexadactyly) was seen in relation to both hands and left foot, and all the nails (of both upper and lower extremities) were short and dystrophic (figure 1B).
The principal manifestations are rod-cone dystrophy (Retinitis pigmentosa), postaxial polydactyly, central obesity, mental retardation, hypogonadism and renal dysfunction.
La hembra tiene cuatro pares de mamas, un par postaxial, uno pectoral, uno abdominal y otro inguinal.
The limb abnormalities after VPA exposure may include pre- and postaxial polydactyly, overlapping digits, talipes (clubfoot), clinodactyly, arachnodactyly, hip dislocation, limb deficiencies, preaxial and postaxial polydactyly, reduction malformations of the arms and hands and radial ray defects19,20 .
sup][1] It is characterized by short limbs, short ribs, postaxial polydactyly, dysplastic nails/teeth, and congenital heart defects (CHD) which were observed in about 60% of affected individuals.
The cases were congenital, morphologically similar and showed loss of four fingers, most often postaxial.
Padmanabham and Hameed in 1990, observed that by giving the different doses of cadmium limb malformations such as ectrodactyly, postaxial polydactyly, adactyly, phocomelia, meromelia and malrotation of the limbs were detected in significant number of fetuses.
In our current case, we think that the possible mechanism might be the preaxial loading stresses in forearm that went to postaxial border of arm and transmitted through elbow which caused fracture of the trochlea with fracture at end distal radius.
The affiliation of this specimen to Colpocoryphe bohemica is, in comparison with the previous sample, more reliable because the pygidium has 7-8 rings and a distinct postaxial elevation reaching the pygidial margin.
Affected members have great phenotypic variability with some individuals having only complete and incomplete cutaneous, pre-axial and postaxial syndactyly and pre-axial and postaxial polydactyly.