A single score is required from the Groups A and B which will represent the level of postural loading of the musculoskeletal system due to the combined body part postures. The first step in establishing such a system was to rank each posture combination from the least to the greatest loading based on biomechanical and muscle function criteria2’. This process was conducted over some time by two ergonomists and an occupational physiotherapist. Each ranked the postures on a scale from I to 9. A score of 1 was defined as the posture where the least musculoskeletal loading occurred. Where differences in the scores occurred the loads on the musculoskeletal system were discussed and a score agreed. This produced a table of consolidated body segment posture scores called posture score A and B respectively.