OCSI Static Air ROM Knee Orthosis Large Oxygen Conserver Concentrators 5 * Rigid bolt through mounted Color:Yellow 5 * Rigid bolt through mounted handrail * Two full width safety treads on each step * Tough PVC edge tape * Powder coated 2 x 2 steel uprights * Brace reinforced underside * Small corner staircase for limited space * Requires a minimum 9' ceiling * 500 lbs Foam base may be wiped with damp cloth * Neoprene rubber cushion insert can be patched or repaired to extend use * Customized Jay foam base and ROHO air insert are fluid resistant * Cushion size: 17 Treats mild moderate knee flexion contracture by applying low load prolonged stretch * Adjustable air bladders behind the knee conform to angle of the joint * Removable static setting hinge * ROM flexion and extension stop hinges * Gel knee pad and cuffs included * Antibacterial shear reducing fabric helps protect skin and limit odor * Fits left or right * Suggested code: L1847 * Sizing: Measure circumference 4 1 2 above and 4 below mid patella * Thigh cuff circumference: 18 22 * Thigh cuff circumference: 15 19 * Dynamic knee has traditional goniometer style hinge instead of KWIK SET hinge *