Background: Developing ways of engaging CRGs and Fields in shared work is a priority issue for The Cochrane Collaboration. Funded by the Prioritisation Fund, we have developed and are piloting a framework for effective collaboration between the Bone, Joint and Muscle Trauma Group and the Health Care of Older People Field. The pilot centres on hip fracture rehabilitation; the majority of patients are old, the societal burden is immense and growing, and there are important gaps in coverage by Cochrane reviews. Objectives: To develop processes towards harnessing the considerable potential for Fields to inform the work and direction of CRGs and to enhance the quality, interpretation and dissemination of relevant reviews. Methods: We set out a detailed 18-month action plan. This included meetings of the project team to draw up a template for action; review progress and discuss strategies for dissemination; and to draw together our views on what worked and where improvements can be made for future collaboration, especially towards prioritisation. To help measure the success of our strategy, we proposed to identify priority topics for up to two reviews and jointly develop strategies for delivering these in a timely fashion. Results: Our systematic approach, devised through our project-team meetings for the identification of priority topics, successfully tapped contributions from members of both entities as well as drawing on entity resources, particularly trial and topic databases. We have now identified two priority topics and both reviews are underway. An up-to-date progress report of these and the framework for enhancing collaboration between CRGs and Fields will be provided at the Colloquium. Conclusions: Overall, we are documenting our project with a view to identifying challenges and opportunities to promote collaboration between a CRG and a Field. Through the additional resources provided by the Prioritisation Fund, we have shown the feasibility of developing processes for joint working. These processes should result in enhanced products that draw benefit from combining the different perspectives and strengths of the two entities in a common purpose.