High intertester reliability of the cumulated ambulation score for the evaluation of basic mobility in patients with hip fracture.

Objective: To examine the intertester reliability of the three activities of the Cumulated Ambulation Score (CAS) and the total CAS, and to define limits for the smallest change in basic mobility that indicates a real change in patients with hip fracture.

Design: An intertester reliability study.

Setting: An acute 20-bed orthopaedic hip fracture unit.