Andreas F. Mavrogenis, Georgios N. Panagopoulos, Konstantinos E. Tolis, Panayiotis D. Megaloikonomos, Vasilios G. Igoumenou, Zinon T. Kokkalis,

zinon t. kokkalis department of orthopaedics, national and kapodistrian university of athens, attikon university hospital, athens, greece konstantinos e. tolis department of orthopaedics, national and kapodistrian university of athens, attikon university hospital, athens, greece panayiotis d. megaloikonomos department of orthopaedics, national and kapodistrian university of athens, attikon university hospital, athens, greece georgios n. panagopoulos department of orthopaedics, national and kapodistrian university of athens, attikon university hospital, athens, greece vasilios g. igoumenou department of orthopaedics, national and kapodistrian university of athens, attikon university hospital, athens, greece andreas f. mavrogenis department of orthopaedics, national and kapodistrian university of athens, attikon university hospital, athens, greece