A Novel Classification for Diabetic Foot Ulcers of the First Ray

Area of Science:

• Podiatry
• Diabetology
• Orthopedic Surgery

Background:

• Diabetic foot ulcers (DFUs) on the first ray arise from biomechanical issues linked to anatomical deformities.
• Effective surgical offloading requires addressing these underlying deformities.
• A standardized classification system is needed for consistent treatment and reporting.

Purpose of the Study:

• To develop a classification system for anatomical deformities associated with first-ray diabetic foot ulcers.
• To improve standardization in the treatment and reporting of these specific ulcers.
• To correlate specific deformities with ulcer locations for targeted surgical planning.

Main Methods:

• Retrospective review of patient files with diabetic neuropathy and first-ray ulcers over 3 years.
• Clinical diagnosis and reporting of anatomical deformities alongside ulcer location.
• Classification based on metatarsophalangeal joint, interphalangeal joint, and distal phalanx involvement.

Main Results:

• Reviewed records of 59 patients (mean age 62) with University of Texas A1/A2 ulcers; mean duration 2 months.
• Common deformities included hallux valgus (41%), hallux malleus (20%), and hallux valgus interphalangeus (14%).
• These deformities correlated significantly (P < .0001) with metatarsophalangeal, tip-of-toe, and interphalangeal joint ulcers, respectively.

Conclusions:

• Classifying ulcer location and associated deformities facilitates selection of corrective surgery.
• Prophylactic interventions for hallux valgus in diabetic feet warrant further investigation for safety and efficacy.