Background and objectives: Tendons are frequently used for reconstructive surgery. This includes tendons of palmaris longus, plantaris, the long extensors of the toes and fingers as well as the flexors of the fingers. The surgeon must base his or her selection of the donor tendon for grafting on what is needed, for example tendon size, length, and width. The most desirable tendons in reconstructive surgery are the palmaris longus and plantaris tendons. To study the presence, variations and relationship between palmaris longus and plantaris tendons. To compare the prevalence of absence in right and left sides. Method: The study was done on 30 cadavers. The palmaris longus and plantaris muscles are indeed subject to variation, whether in the general anatomy, form, attachment, actions and/or prevalence. Parameters like muscle length, tendon length, total length, of both the muscle were measured using measuring tape and the muscle width and tendon width were measured using digital vernier caliper and recorded bilaterally and statistically analysed. Conclusion: based on the morphology and prevalence of the palmaris longus and plantaris muscles in a North Bihar region, they are ideal for the use of flaps and/or tendon graft in reconstructive surgery.