Neuropathic diabetic foot ulcers in the elderly: clinical outcomes and healing

Abstract

There is little evidence on healing outcomes of neuropathic foot ulcers in elderly patients. Aims: To determine the healing rates of neuropathic diabetic foot ulcers at 12 and 24 weeks achieved by standard care provided at an established multidisciplinary diabetes foot clinic in patients aged 65 years and above. Data on the incidence of falls and hypoglycaemia were also collected due to their perceived clinical risk in the group studied. Methods: This was a retrospective observational study looking at clinical outcomes of neuropathic foot ulcers. Patients aged 65 years or more presenting with a non-infected neuropathic ulcer at the time of their initial review were identified and classified into two groups: Group E patients were aged above 80 years and Group Y patients 65-80 years. Results: A total of 97 patients, presenting with 106 ulcer episodes, were identified. Mean HbA1c was 60 mmol/mol in Group Y and 55 mmol/mol in Group E. Healing rates of all ulcers at 12 and 24 weeks in the elderly group lagged behind rates in the younger group (67.6% at 12 weeks and 73% at 24 weeks in Group E vs. 78.2% at both intervals in Group Y). The elderly group had more falls, 11% vs. 2% in Group Y. In all, 50% of the falls in Group E were attributed to their prescribed pressure relief (off-loading) devices. Conclusions: With standard foot care given in a multi- disciplinary foot service, neuropathic diabetic foot ulcers can heal in the elderly despite their age-related skin changes. The rate of healing of neuropathic ulcers noted in our study provides a benchmark for healing outcomes and enables comparison with other age groups and centres. Our study identifies a risk of falls associated with off-loading devices and highlights the need for structured falls risk and mobility assessments in this group.