What is the fine-grained topic of the following text: MediConcepts has since 2005 participated in a research program initiated by a group of leading orthopaedics surgeons from the University of Hong Kong on development a new spine implant using NiTi with its surface treated by plasma immersion technology which create a biocompatible surface for the implant for treating scoliosis patients. Only return the topic.
Development of a new spine implant for scoliosis treatment by MediConcepts and the University of Hong Kong.