We reviewed the cases of seventy patients with chondroblastoma who were
treated at the Istituto Ortopedico Rizzoli between 1949 and 1983 and found
that the proximal end of the humerus was the most common location
(eighteen), with the proximal end of the femur (fifteen), distal end of the
femur (fifteen), and proximal end of the tibia (twelve) being the other
frequently involved sites. Sixty-three of the patients were between eleven
and thirty years old. Fifty-eight patients sought medical attention because
of an aching pain, usually referred to the adjacent joint. Fifty patients
were followed for two years or longer after treatment. Seven patients had a
local recurrence: four were successfully treated with a repeat curettage
and one, by two subsequent marginal excisions; one was advised to have a
repeat curettage; and the seventh was advised to have a resection and
arthrodesis of the knee. The final functional results were considered to be
excellent in forty-seven of the fifty patients who were followed for two
years or more.