The present invention relates to a device at fixing means for fixation of bone fragments at bone fractures, wherein the fixing means (1) preferably is a spike for thigh-bone necks for fixation of bone fragments (2.3) at fractures (4) of the thigh-bone neck. The fixing means (1) comprises a sleeve (5)...http://www.google.co.uk/patents/US7029476?utm_source=gb-gplus-sharePatent US7029476 - Device at fixing means for fixation of bone fragments at bone fractures