The Swiss young star Justin Murisier has had to stop his training camp in South American prematurely. Murisier who sustained an ACL tear last September continues to have pain his operated right knee while skiing and hence has decided to return home to Switzerland early.During his initial training on snow earlier this summer the knee held up well and 20-year-old Murisier did not have any pain. Despite the good start, the slalom training in Ushuaia began to irritate the young talent's knee. Local examination of the knee provided no clear indication of the problem and despite intensive on-site therapy during two days of rest, the situation did not improve. Murisier will now return to have additional examination at home whilst the rest of the team remains in Ushuaia until 18th August.