G. David Baxter

Exercise therapy, manual therapy, or both, for osteoarthritis of the hip or knee: a factorial randomised controlled trial protocol

J. McKenzie, A. Campbell, M. Robertson, 2009, Trials.

Measurement of function in hip osteoarthritis: Developing a standardized approach for physical performance measures

A. Wright, J. Abbott, E. Hegedus, 2011, Physiotherapy Theory and Practice.