As noted above, necrosis is a type of tissue death due to lack of blood supply and oxygen. An injured toe, particularly a dislocation or fracture, may already involve damaged blood vessels, so you have to be extra careful when buddy taping not to cut off circulation to the toes. If you accidentally do, then the toes will likely start to throb with achy pain and turn dark red, then dark blue. Most tissue can survive without oxygen for a couple hours (at most), but it's imperative to carefully observe your toes within a 1/2 hour or so of taping to make sure they are getting enough blood.  People with diabetes have much less feeling in their toes and feet, and tend to have poor circulation, which is why they should avoid buddy taping toe injuries. If necrosis does occur in the toes, then amputation surgery is needed to remove them so infection doesn't spread to the rest of the foot or leg. If you experienced an open compound fracture, your doctor may recommend a precautionary two-week course of oral antibiotics to deter a bacterial infection. Although most injuries respond well to taping, some are beyond its scope. When toes are crushed and completely shattered (referred to as a comminuted fracture) or fractured such that the bones radically misalign and stick out through the skin (called an open compound fracture), then no amount of taping is helpful. Instead, you need to get to an emergency department immediately for medical attention and likely a surgical procedure.  Common symptoms of a broken toe include: intense sharp pain, swelling, stiffness, and usually immediate bruising due to internal bleeding. Walking is difficult, and running or jumping is nearly impossible without excruciating pain. Broken toes can be related to conditions that weaken bone, such as bone cancer, bone infections, osteoporosis or chronic diabetes. Once your toe is injured, it's even more susceptible to other damage and problems. As such, wear comfortable and protective shoes while taping your toes (anywhere from two to 6 weeks). Choose close-toed, comfortable fitting shoes that have plenty of room in the toe cap to accommodate the tape/gauze and any associated swelling. Hard-soled, supportive, and sturdy shoes are likely the most protective, so avoid flip-flops and soft slip-on types. Completely avoid high-heel shoes for at least a few months post-injury because they severely crowd the toes and restrict blood flow.  Supportive open-toed sandals can be used if the swelling in your toe is excessive, but remember that they don't offer any protection, so wear them with caution. If you work in construction, or as a fireman, policeman or landscaper, consider wearing steel-toed boots for added protection until your toe completely heals.
ابحث عن العلامات الدالة على التنخر. لا تلف الأصابع المصابة بالكسور الشديدة. احم إصبع قدمك من الأضرار المتزايدة.