<p>Pressure ulcers are defined as localised damage to the skin and/or underlying tissues usually caused by sustained pressure at the interface between bone and soft tissue. Pressure ulceration can range in severity from non-blanching erythema of intact skin (tissue redness that does not turn white when pressure is applied with a finger), to deep tissue loss with muscle, tendon, and/or bone involvement[1]. They are caused by both extrinsic and intrinsic factors[2]. The intrinsic factors include immobility, sensory impairment, age and/or chronic illness[3,4]. The extrinsic factors include forces such as shear, friction and pressure[1].</p>
