After placement of two permucosal implants in the mandible, the patient complains about pain in the preauricular region. The mouth is half open and the mandible is protruded. Anteriorly to the auditory canal a depression of the facial skin is visible, in front of which it is possible to palpate the condyle. During a six month period, the luxation of the temporomandibular joint was not observed. The CT and MRI revealed no signs of bone ingrowth, although fibrous tissue was observed in the joint space. In the end a surgical procedure was indicated to mobelize both condylar heads and to force them back in their original position. By a preauricular approach both joint capsules were opened. Subsequently the fibrous tissue in the mandibular fossa was removed. Three mondts postoperatively the patient is painfree, although there is a restricted mouth opening of 29 millimetres.