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.
Individuals who have diabetic neuropathy can also experience swelling in the feet and ankles, according to WebMD. This condition can lead to infections, as neuropathy can cause reduced sensation in the feet. People with diabetic neuropathy should do a daily foot inspection to check for blisters or injuries.