Types of Exoskeletal Fingers: Thumb, Proximal, and Distal
This article explains the differences between exoskeletal finger types and the key selection criteria.
Fingers are categorized by residual position into three types: thumb, proximal, and distal. The model you choose directly affects fit and function.
Thumb Carries about half of hand function and drives grip and opposition. The Thumb exoskeletal finger is designed for thumb loss, restoring opposition and grip.
Proximal Sits near the palm and usually involves a larger loss, requiring more stability and joint trajectory control. The Proximal exoskeletal finger focuses on joint motion and fit.
Distal Is the fingertip segment and the most common site of loss. The Distal exoskeletal finger balances a natural contour with a light, well-fitted design for fine movements.
For a loss limited to a single segment (e.g., only the fingertip), the one-segment (“一节”) option offers a lighter, simpler structure.
Selection Criteria
- Residual position and length: identify the missing segment and how much remains.
- Function: whether full opposition and grip are needed, or mainly appearance and assisted motion.
- Use case: strength and weight requirements differ for daily life, work, and sports.
- Hand shape and size: refined designs suit Asian hands better.
If uncertain, book a one-on-one video consultation; a professional will confirm your situation and recommend a model. Data collection and molding take only 10–20 minutes, with no need to visit in person—the full process is completed by courier.
Contact: WeChat LMSGF1 | Email biocathand@qq.com | Phone +86 153 0166 7637