cruciform part of fibrous digital sheaths of hand and foot

cru·ci·form part of fi·brous dig·i·tal sheaths of hand and foot

[TA] the fibers of the fibrous sheath of the fingers and toes that constitute three X-shaped pulleys (C1-C3) over the proximal and middle phalanx. Synonym(s): pars cruciformis vaginae fibrosae [TA], crucial ligament (4) , cruciate ligament of digits, cruciform part of fibrous sheath, cruciform pulley, ligamenta cruciata digitorum