The present invention relates to an adaptable therapeutic, diagnostic or surgical guide for an intra-operative adjustment of a guidance element to a pre-planned position. An advantage and innovation of the present invention is that it provides a template or guide that adapts in a controlled way to a changed intra-operative anatomical situation compared to the default planned situation. This adaption maybe purely positional but it may also include force feedback. Feedback, either visual feedback or force feedback that results in an adjustment of a guidance element is also an aspect of the present invention. For example, the feedback can contain information either about the fit of the guide or template onto a bone (in case the guide or template fits onto one bone) or about the relative position of two bones of bone fragments (e.g. ligament tension between the femur and tibia).
