Medical Shoes for Diabetic Foot with Peripheral Neuropathy
For patients with diabetes and peripheral neuropathy, prescribe therapeutic footwear with custom-made insoles that achieve at least 30% plantar pressure reduction compared to standard therapeutic footwear, particularly if the patient has foot deformities or pre-ulcerative signs. 1, 2
Risk Stratification Determines Footwear Type
The appropriate footwear depends on whether this is primary prevention (no prior ulcer) or secondary prevention (history of ulceration):
For First-Time Ulcer Prevention (Primary Prevention)
- Properly fitting footwear is sufficient if no foot deformities or pre-ulcerative signs exist 1
- Upgrade to therapeutic shoes with custom-made insoles or toe orthosis when foot deformities (hammertoes, claw toes, hallux valgus, prominent metatarsal heads) or pre-ulcerative signs (calluses, blisters, hemorrhage) are present 1, 2
- The strength of this recommendation is strong despite low-quality evidence 1
For Recurrent Plantar Ulcer Prevention (Secondary Prevention)
This is where the evidence is strongest: Prescribe therapeutic footwear that demonstrates 30% plantar pressure relief during walking compared to standard therapeutic footwear 1, 2. This recommendation has:
- Strong strength of recommendation
- Moderate quality evidence 1
- Proven effectiveness in reducing recurrence rates from 25% to 9.9% in controlled trials 3
Specific Footwear Components That Work
Based on the evidence, effective therapeutic footwear should include:
Custom insoles with:
- Arch profile support (reduces peak plantar pressure by 37 kPa) 4
- Metatarsal additions or apertures (reduces pressure by 36 kPa) 4
- Pressure-informed design using in-shoe plantar pressure measurements (reduces pressure by 75 kPa) 4, 5
- Design based on weight-bearing position and 3D foot shape 6
Shoe characteristics:
- Extra-depth shoes for bunions or hammertoes 7
- Custom-made footwear for severe deformities like Charcot joint disease 7
- Semi-rigid biomechanical sole for active patients (reduces recurrence to 14.9% at 1 year) 8
Critical Implementation Points
Patient adherence is paramount: Discontinuous use of therapeutic footwear increases ulcer recurrence risk 8.9-fold and minor amputation risk 10.5-fold 8. Therefore:
- Emphasize continuous wear during all weight-bearing activities 2
- Consider patient satisfaction factors (comfort, fit, weight, appearance) which don't differ significantly between footwear types 5
- Provide integrated foot care with re-evaluation every 1-3 months 1
What NOT to do:
- Do not allow patients to walk barefoot, in socks only, or in thin-soled standard slippers—even at home 1, 2
- Do not use conventional or standard therapeutic shoes for healing active plantar ulcers 2
When Conservative Footwear Fails
If recurrent ulceration occurs despite proper therapeutic footwear, consider surgical reconstruction by an experienced diabetic foot surgeon 7:
- Achilles tendon lengthening for plantar forefoot ulcers 1, 2
- Digital flexor tenotomy for hammertoes with toe ulcers 1, 2
- Metatarsal head resection or osteotomy for plantar forefoot ulcers 1, 2
Practical Algorithm
- Assess risk: Annual foot examination for peripheral neuropathy, PAD, deformities, pre-ulcerative signs 1
- No deformities/no prior ulcer: Properly fitting footwear + education
- Deformities or pre-ulcerative signs present: Therapeutic shoes + custom insoles + toe orthosis if needed
- History of plantar ulcer: Therapeutic footwear with documented 30% pressure reduction + follow-up every 1-3 months
- Recurrent ulceration despite footwear: Refer to diabetic foot surgeon for reconstruction
The 2024 IWGDF update reinforces these principles, emphasizing that proper offloading through therapeutic footwear reduces infection, hospitalization, and amputation risk 9.