EFFECTS OF HYPODYNAMIC CONDITIONS ON THE ARTERIAL BED IN THE MUSCLES AND ADJACENT STRUCTURES OF PELVIC EXTREMITIES IN THE RABBIT WERE INVESTIGATED. ANATOMICAL METHODS OF INVESTIGATION REVEALED THAT HYPODYNAMIC CONDITIONS PRODUCED MORPHOLOGICAL TRANSFORMATIONS IN INTRAORGANIC ARTERIAL SYSTEM IN THE MUSCLES, FASCIA AND ADIPOSE CELLULAR TISSUE OF THE IMMOBILIZED EXTREMITY. THESE CHANGES PROVED TO BE STABLE AND RETAINED DURING 6 MONTHS.