PalMar aspect of the left hand indicating the position of the metacarpo-Phalangeal joints the thinar and hypothenar muscle Eminences the PalMar fascia and tendons crossing the wrist beneath the flexor retinaculum

It is an important clinical point when applying a splint for plaster to keep the wrist extend that it should not impinge on the metacarpo-pha langeal joints but terminate below them to ensure that the patient can flex is finger over the splint two right angles with the is the palm of his hand.