1 Interchangeable needle kits are exactly what they sound like--a set of knitting needle tips, and a set of cords of varying length that can attach and detach from the tips to create many different combinations of needle sizes and cord lengths.
Poor circulation (blood flow) can make your foot less able to fight infection and to heal. Diabetes causes blood vessels of the foot and leg to narrow and harden. You can control some of the things that cause poor blood flow. Don't smoke; smoking makes arteries harden faster.
When diabetics inspect their feet, they should be aware of the following: (1) Color changes in Feet. Paleness or bluishness of the toes and decrease of circulation. Black skin is a sign of dead tissue, and redness with streaks is often a sign of infection. (2) Swelling. Abnormal swelling may be the result of poor circulation or swelling.