Lee J. Sanders

The Charcot Foot in Diabetes

The diabetic Charcot foot syndrome is a serious and potentially limb-threatening lower-extremity complication of diabetes. First described in 1883, this enigmatic condition continues to challenge even the most experienced practitioners. Now considered an inflammatory syndrome, the diabetic Charcot foot is characterized by varying degrees of bone and joint disorganization secondary to underlying neuropathy, trauma, and perturbations of bone metabolism. An international task force of experts was convened by the American Diabetes Association and the American Podiatric Medical Association in January 2011 to summarize available evidence on the pathophysiology, natural history, presentations, and treatment recommendations for this entity.

Body Mass is a Poor Predictor of Peak Plantar Pressure in Diabetic Men

Objective To examine the relationship between peak plantar pressure during walking and body mass in diabetic patients and age-matched control subjects. Research Design And Methods A volunteer sample of 56 male diabetic veterans (12 insulin dependent, 44 non-insulin dependent) with a mean age of 58.9 yr, mean duration of diabetes of 16.9 yr, and mean vibration perception threshold of 30.8 and 27 age-matched nondiabetic control subjects comprised the study. Results Peak plantar pressure was measured with a 1000-element piezoelectric platform during the first step of gait. The correlation between body mass and peak pressure was found to be only 0.37 in the patients with diabetes and 0.36 in the control subjects, indicating that body mass accounts for < 14% of the variance in peak plantar pressure. The body mass and peak plantar pressure of the 14 patients who experienced plantar ulcers was not significantly different from those who did not ulcerate, but vibration perception thresholds and monofilament perception thresholds of the ulcer patients were significantly higher. Conclusions Although the correlation between body mass and peak plantar pressure is statistically significant, the functional relationship between the two variables is weak. Elevated plantar pressures are as likely to occur in small individuals as they are in those with large body mass. Foot deformity, in the presence of neuropathy and other permissive factors, is itself likely to be an important risk factor for plantar ulceration in diabetes, and this hypothesis deserves further exploration.

History of the team approach to amputation prevention: Pioneers and milestones

BACKGROUND This historical perspective highlights some of the pioneers, milestones, teams, and system changes that have had a major impact on the management of the diabetic foot during the past 100 years. In 1934, American diabetologist Elliott P. Joslin noted that mortality from diabetic coma had fallen from 60% to 5% after the introduction of insulin, yet deaths from diabetic gangrene of the lower extremity had risen significantly. He believed that diabetic gangrene was preventable. His remedy was a team approach that included foot care, diet, exercise, prompt treatment of foot infections, and specialized surgical care. RESULTS The history of a team approach to management of the diabetic foot chronicles the rise of a new health profession, Podiatric Medicine and Surgery, as well as the emergence of the specialty of Vascular Surgery. The partnership between the diabetologist, vascular surgeon, and podiatrist is a natural one. The complementary skills and knowledge of each can improve limb salvage and functional outcomes. Comprehensive multidisciplinary foot care programs have been shown to increase quality of care and reduce amputation rates by 36% to 86%. The development of distal revascularization techniques to restore pulsatile blood flow to the foot has also been a major advancement. CONCLUSION Diabetic foot patients are among the most complex and vulnerable of all patient populations. Specialized diabetic foot clinics of the 21st century should be multidisciplinary and equipped to coordinate diagnosis, off-loading, and preventive care; perform revascularization procedures; aggressively treat infections; and manage medical comorbidities.

The charcot foot in diabetes

The diabetic Charcot foot syndrome is a serious and potentially limb-threatening lower-extremity complication of diabetes. First described in 1883, this enigmatic condition continues to challenge even the most experienced practitioners. Now considered an inflammatory syndrome, the diabetic Charcot foot is characterized by varying degrees of bone and joint disorganization secondary to underlying neuropathy, trauma, and perturbations of bone metabolism. An international task force of experts was convened by the American Diabetes Association and the American Podiatric Medical Association in January 2011 to summarize available evidence on the pathophysiology, natural history, presentations, and treatment recommendations for this entity.

Jean-Martin Charcot (1825-1893). The man behind the joint disease.

Jean-Martin Charcot was one of the most celebrated French physicians of the 19th century. A masterful teacher and a captivating lecturer, Charcot created the foundations of neurology as an independent discipline, and transformed the Salpêtrière hospital, in Paris, into one of the worlds greatest teaching centers for clinical neurologic research. His name is attached to the distinct pathologic entity, Charcots joint disease, that he so meticulously described. This article reviews the highlights of Charcots career and his clinicoanatomic studies of patients with tabetic arthropathies.

Who was first to diagnose and report neuropathic arthropathy of the foot and ankle: Jean-Martin Charcot or Herbert William Page?

In November 1883, Jean-Martin Charcot and Charles Féré reported on bone and joint disease of the foot in cases of tabes dorsalis, and referred to the condition as ‘pied tabétique’—a disabling neuropathic osteoarthropathy that we usually now refer to as the Charcot foot. Charcot had originally described neuropathic osteoarthropathy in more proximal joints in 1868, and in his 1883 paper with Féré stated that involvement of the short bones and small joints of the foot had not yet been described. They emphasised in the paper that one of their cases was the first ever observed, two years earlier, in 1881. It is relevant, however, that it was in this same year that involvement of the foot by tabetic arthropathy was presented to the International Medical Congress in London by an English surgeon, Herbert William Page. We believe that Page was the first to diagnose and to report a case of tabetic neuropathic osteoarthropathy in which the bones of the foot and ankle were involved. He was also the first to propose a link between the tabetic foot and disease of the peripheral nerves, as opposed to the central nervous system.

History of the team approach to amputation prevention: pioneers and milestones.

This historical perspective highlights some of the pioneers, milestones, teams, and system changes that have had a major impact on management of the diabetic foot during the past 100 years. In 1934, American diabetologist Elliott P. Joslin noted that mortality from diabetic coma had fallen from 60% to 5% after the introduction of insulin, yet deaths from diabetic gangrene of the lower extremity had risen significantly. He believed that diabetic gangrene was preventable. His remedy was a team approach that included foot care, diet, exercise, prompt treatment of foot infections, and specialized surgical care. The history of the team approach to management of the diabetic foot chronicles the rise of a new health profession-podiatric medicine and surgery-and emergence of the specialty of vascular surgery. The partnership among the diabetologist, vascular surgeon, and podiatric surgeon is a natural one. The complementary skills and knowledge of each can improve limb salvage and functional outcomes. Comprehensive multidisciplinary foot-care programs have been shown to increase quality of care and reduce amputation rates by 36% to 86%. Development of distal revascularization techniques to restore pulsatile blood flow to the foot has also been a major advancement. Patients with diabetic foot complications are among the most complex and vulnerable of all patient populations. Specialized diabetic foot clinics of the 21st century should be multidisciplinary and equipped to coordinate diagnosis, off-loading, and preventive care; to perform revascularization procedures; to aggressively treat infections; and to manage medical comorbidities.