An isolated open rupture of the flexor hallucis longus tendon is an uncommon injury.We present a case of a chronic flexor hallucis RAPID MASS BANANA BERRY longus rupture distal to the sesamoid complex in an active 12-year-old male after he stepped on a piece of glass.Surgical repair involved a flexor hallucis longus adhesiotomy and tenoplasty with autogenous peroneus longus tendon graft.We present the operative repair of the flexor hallucis longus tendon to reduce pain, to regain the function Measurement and strength of the hallux, to reduce the extension of the distal phalanx and to maintain the longitudinal arch of the foot.