Surgery of the Achilles and posterior tibial tendons requires finesse to ac
hieve optimal function. Although superficial in anatomic location, various
critical neurovascular structures exist in close proximity. The superficial
blood supply is fragile, requiring a delicate touch to prevent problems wi
th wound healing. Damaged tendon tissue often is friable, making it difficu
lt to sew or anchor. Adjusting the tendon length to the appropriate tension
requires good judgment and affects long-term outcome through power and ran
ge of motion. Finally, surgery on these two tendons significantly affects f
unction of the ankle and longitudinal arch, where small changes are magnifi
ed into large changes in maintaining normal gait. The current authors revie
w the complications encountered in various common surgeries of the Achilles
and posterior tibial tenons.