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This Concept Map, created with IHMC CmapTools, has information related to: Navicular bursa block, Advantages Indicates disease of Navicular bone and\or its supporting ligaments, Volume of anaesthetic agent 2-4mls, Disadvantages The navicular bursa block has little effect on pain originating in the coffin joint, Advantages Indicates disease of Solar toe pain, Advantages Indicates disease of Navicular bursa, Navicular bursa block Requires prerequisite knowledge Anatomy, Disadvantages The navicular bone is not easily palpable, Navicular bursa block Technique Two approaches to gain access into the navicular bursa, 4. The needle is advanced until the tip makes contact with the flexor surface of the navicular bone. The lower portion of the limb is flexed and the anaesthetic agent is administered. (MO), 4. The needle is advanced until the tip makes contact with the flexor surface of the navicular bone. The lower portion of the limb is flexed and the anaesthetic agent is administered. (MO) Ensure proper needle placement There is low resistance to injection, the injected contents can be aspirated., Navicular bursa block Areas desensitized Anaesthesia of the toe region of the sole, 4. The needle is advanced until the tip makes contact with the flexor surface of the navicular bone. The lower portion of the limb is flexed and the anaesthetic agent is administered. (MO) Ensure proper needle placement Radiographically examine the foot before injecting, Two approaches to gain access into the navicular bursa Ultrasound guided approach proximal to the bulbs of the heel (MO), Navicular bursa block Advantages, Equipment 18-20ga, 3.5 inch hypodermic needle Hypodermic syringe, Advantages Indicates disease of Distal portion of the DDFT, Two approaches to gain access into the navicular bursa Distal palmar approach to the “navicular position” (DPNP)- (MO), 5. The needle can be readjusted accordingly and the anaesthetic agent can be administered., 4. The needle is advanced until the tip makes contact with the flexor surface of the navicular bone. The lower portion of the limb is flexed and the anaesthetic agent is administered. (MO) Ensure proper needle placement Improper placement\resistance (MO), Navicular bursa block Disadvantages