New disease

Knee ligaments calcifi cation is a rare clinical entity. Pellgrini 1 was the fi rst to describe in 1905 ossifi cation of medial col-lateral ligament (MCL) and Stieda 2 in 1908 reported a case series of fi ve patients. Fonda 3 reported a case of calcifi ed posterior cruciate ligament (PCL) along with osteochon-dritis dessicans of the lateral femoral condyle in 1955. No case of isolated PCL calcifi cation has been reported in the literature so far. We report the clinical presentation, treat-ment and clinical outcome of our patient. Our patient was informed that data concerning the case would be submit-ted for publication. CASE PRESENTATION A 61-year-old female presented at the accident and emer-gency department of our hospital, with right knee pain and decreased range of motion (ROM) following a fall. She reported right knee pain during the past 12 months without any history of trauma. The pain was non-specifi c and worsened during the night. She had no prior consul-tation for her symptoms up to her presentation but she used symptomatic treatment with painkillers. Her medi-cal history revealed that she had been under medication for epileptic seizures (valproate), osteoporosis (alendro-nate, calcium and vitamin D) and hyperthyroidis