Operating tables and accessories thereof, particularly headrests, shoulder rests, arm rests, footrests, expansion and extension parts, adapter plates, elbow rests, lateral rests, back rests, buttock rests, pubis, sacrum and sternum rests, leg plates, lateral rests, shoulder pads, leg rests, hand plates, head caps, arm immobilizers, handcuffs, leg immobilizers, body straps, leg straps, rectoscopy rolls, rests for the feet and knees, trays for shoulder arthroscopy, positioning and traction devices, extension devices, fixing parts, infusion rods, anesthetic frames, cartridge frames, supports