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Case Study: Diabetic Foot Ulcer
This 52 year old patient with a long standing history of type
1 diabetes and recurrent ulcers bilaterally presented at his first
study visit with an ulcer on each foot. This figure shows two
visits separated by 6 weeks. At his first visit, the subject had
one ulcer on the big toe of the left foot and one ulcer on the
2nd MTPJ of the right foot. The elevated HT measurements on the
left big toe predicted that the ulcer would heal and the low HT
measurements on the right foot predicted that the ulcer would
not heal. On return 6 weeks later, these predictions were seen
to be correct, with areas that HT indicated would heal having
healed, areas predicted not to heal, not having healed and areas
indicated to be at risk becoming involved in ulcer spread. Of
note, this subject’s entire right foot deteriorated substantially
between visits, with not only spreading of the ulcer, but also
a generalized decrease of both HT-Oxy and HT-Deoxy parameters.
Note new sharp edges of the wound after debridement. This debridement
may have contributed to the further deterioration of the right
foot. This subject subsequently had a right below the knee amputation.
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