Abstract:

Objective    To reveal morphologic features of human flexor digitorum longus (FDL) for clinical application.　Methods　Muscle architecture skill and modified Sihler's staining were used in this study.　Results　①The FDL could be divided into tibial and fibula compartments by the instramuscular tendon; ②The values of muscle architecture of tibial compartment of FDL were bigger than those of the fibula compartment; ③Tibial compartment and fibula compartment were innervated respectively.　Conclusions　 ①The FDL can be divided into tibial and fibula compartments, with independent nerve innervation; ②Two compartments formed by the half pinnate muscle, however, muscle strength of tibial compartment is more strong than that of fibula compartment.

Key words: Flexor digitorum longus, Muscle architecture, Instramuscular nerve, Muscle compartment