Functional Gait Assessment in Diabetic Neuropathy
Core Assessment Components
- The American Diabetes Association recommends that all patients with diabetic peripheral neuropathy should undergo annual functional gait assessment that includes evaluation of kinesthetic and proprioceptive sensation, 10-g monofilament testing, and assessment of balance and mobility using validated tools such as the Timed "Up & Go" Test or Dynamic Gait Index 1, 2
- Patients with diabetic peripheral neuropathy should perform 10-g monofilament testing annually to identify loss of protective sensation (LOPS), which is the primary risk factor for foot ulceration and altered gait mechanics 1, 3
- Vibration sensation using a 128-Hz tuning fork should be assessed to evaluate large-fiber function, as this directly impacts proprioception during walking 1
- Temperature or pinprick sensation should be tested to evaluate small-fiber function 1
- Kinesthetic and proprioceptive sensation should be evaluated specifically before recommending any physical activity program, particularly in patients with more severe neuropathy 4, 5, 6
Risk Stratification
- Previous amputation or foot ulcer history is a high-risk feature requiring immediate attention 3
- Visible foot deformities, such as hammertoes, prominent metatarsal heads, bunions, or Charcot foot, are high-risk features requiring immediate attention 3
- Impaired visual acuity is a high-risk feature requiring immediate attention 3
- Concurrent autonomic neuropathy increases risk through postural hypotension, impaired thermoregulation, and decreased cardiac responsiveness 4, 5, 6, 7
- Diabetic nephropathy, especially dialysis patients, is a high-risk feature requiring immediate attention 3
Disability Assessment
- Activities of daily living (ADLs) and instrumental activities of daily living (IADLs) should be evaluated at each visit, as diabetes increases disability risk by 50-80%, with lower-body functional limitation being most prevalent (47-84%) 2
- Patients with disability impacting functional ability or diabetes self-management capacity should be referred to physical therapy, occupational therapy, or physical medicine and rehabilitation 2
Critical Clinical Caveats
- Gait abnormalities occur before clinical neuropathy is evident, and assessment should begin at diabetes diagnosis for type 2 diabetes and after 5 years for type 1 diabetes 1
- Moderate-intensity walking is safe and beneficial when proper footwear is used, even in established peripheral neuropathy, and does not increase foot ulcer risk 4, 5, 6, 7
- Daily foot examination is mandatory for all patients with peripheral neuropathy to detect lesions early, as decreased pain sensation eliminates the normal warning system for tissue damage 4, 5, 7