Luxation of the superficial digital flexor tendon (SDFT) is an infrequent orthopaedic condition in dogs. A case of SDFT luxation is herein reported in a 2-year old bitch, crossbred with a Shetland sheepdog. The dog was referred for severe, left hind limb lameness. Physical examination revealed a painful swelling located at the calcaneal tuber, related to ectasia of the bursa tendinis calcanei. Lateral SDFT luxation was observed on flexion of the hock. No other orthopaedic pathologies were identified either in the affected limb or in the contralateral limb. The SDFT luxation was treated surgically by securing the tendon with a non-absorbable suture using simple interrupted stitches. The limb was then immobilised in plaster for 3 weeks and, after removal, the tendon was found to be stable with no signs of bursitis. Upon examination 6 weeks after surgery, no lameness was detected and no signs of relapse were noted.