[Symptomatic calcification of the lateral collateral knee ligament]

We describe a case of symptomatic calcification of the lateral collateral knee ligament in a 53-year-old female patient. The calcification became extremely painful and increased in size and it was decided to resect the calcification operatively because of pain progression. After operative resection of the deposits the patient is currently free of complaints and relapse-free after 4.5 years. In the literature four cases of calcification of the medial collateral ligament are described which were also successfully treated by operative resection.