A support system for positioning a patient in lateral position during surgery procedures with a removable, adjustable support pad assembly, comprising a first support unit arranged for attachment to side rail on a lateral edge of an operating table, and a second support unit comprising an arm connected movably by the using of a movable connection with a pad plate adapted to position a support pad connected by a biasing connector to a support plate with degrees of freedom of angular rotational movement of the support pad in relation to the patient. The biasing connector comprises a channel formed between a base plate support segment and a projection clamping the pad plate apart from the support plate to allow flow of air and/or fluids from the support pad.