This mutation may cause a reduction in dorsalising signals, which then results in the failure to normally develop dorsal specific structures such as nails and patellae.
It creates an attachment point for the ligamentum patellae, or patellar ligament.
If the plica tethers the patella to the femoral condyle, the symptoms may cause it to be mistaken for chondromalacia patellae.
The long, slender legs are dark with the patellae and most of the tibiae of the first two pairs bright orange-red.
Femora, patellae and tibiae on the first pair of legs are swollen in the male, and there is a fringe below the tibiae.
Ossified patellae are absent in most modern marsupials, though a small number of exceptions are reported.
The patellae are counted in the total, as they are constant.
The female is uniformly dark brown apart from paler coxae and patellae.
