Dysmorphism-pectus carinatum-joint laxity syndrome is characterised by joint laxity, pectus carinatum and facial dysmorphism (mild frontal bossing, a beaked nose with a low nasal bridge, malar hypoplasia, chubby cheeks, a striking philtrum and arched upper lips). It has been described in two siblings. The mode of transmission is unknown.

The legs angle inward, such that the knees are close together and the ankles far apart.