The Anatomic Grip™ handle was designed from a pressure mapping study, not from a stylistic starting point. The design brief was specific: reduce peak palm pressure under 30kg vertical cane load to below 2.0 N/cm² — the threshold above which sustained contact begins producing discomfort in users with normal sensitivity, and the threshold at which allodynia-affected users consistently report pain.
The T-bar handle at 4.2 N/cm² is 210% above this threshold. The Fritz handle at 2.8 N/cm² is 140% above it. The design problem was well-defined: distribute force across a larger palm area while maintaining sufficient grip friction for secure hold under lateral loading.
The Pressure Mapping Study
The study protocol: 14 participants spanning the adult hand size distribution (hand length 170–205mm, grip circumference 195–245mm). Each participant held each handle type in their dominant hand. A standardised 30kg vertical load was applied at the tip. Pressure was recorded using a thin-film pressure mapping array across the full palm contact area.
Measurements recorded: peak pressure (N/cm²), mean pressure (N/cm²), contact area (cm²), pressure distribution uniformity (coefficient of variation across the contact patch).
| Handle Type | Peak Pressure | Mean Pressure | Contact Area | Distribution Uniformity |
|---|---|---|---|---|
| T-bar | 4.2 N/cm² | 1.8 N/cm² | 16.7 cm² | Poor — concentrated at thenar eminence |
| Fritz (L hand) | 2.8 N/cm² | 1.4 N/cm² | 21.4 cm² | Moderate — better than T-bar, asymmetric |
| Derby | 3.1 N/cm² | 1.6 N/cm² | 19.3 cm² | Moderate — central concentration |
| Anatomic Grip™ (target) | 1.9 N/cm² | 0.9 N/cm² | 28.6 cm² | Good — distributed across metacarpal arch |
The Design Principles
Metacarpal arch conformance: The human hand at rest follows a transverse arch across the metacarpals — the knuckles are not flat, they curve from the index to the little finger. A handle that matches this arch distributes load across all four metacarpals simultaneously rather than concentrating at the radial side (T-bar) or a single point.
Thenar eminence offloading: The thenar eminence (base of the thumb) is one of the more sensitive and structurally vulnerable areas of the palm for sustained pressure. The Anatomic Grip™ geometry routes load away from this area by providing a slight depression at the radial side of the handle — the thumb rests naturally without bearing load.
Bilateral symmetry: The Fritz handle achieves lower pressure than the T-bar but is laterally asymmetric — it is a left-hand or right-hand handle. The Anatomic Grip™ is symmetric. This was a design constraint imposed by the contralateral use rule — users must be able to switch hands without losing ergonomic benefit.
Grip friction without grip force: A handle that requires active grip force to maintain during walking imposes a sustained muscular load on the forearm flexors. The Anatomic Grip™ achieves sufficient passive friction through wood grain surface texture — the user's hand rests in the handle rather than gripping it. Grip force is required only for lateral loading control, not for maintaining the handle position under vertical load.
Wood as the Handle Material
The pressure mapping study was conducted on wood prototypes for the Anatomic Grip™ and on commercially available handles for the comparison types. Wood was selected as the final material for four reasons documented in the design record:
- Passive friction (COF 0.55–0.68 dry; 0.51–0.57 wet) — structural, not surface-applied
- Vibration damping — 25–60× better than aluminium at equivalent thickness
- Thermal neutrality — 1,000× lower thermal conductivity than aluminium
- Aging behaviour — surface develops patina without functional degradation; synthetic alternatives degrade
The Seven Colour Options
The Colour Edition applies pigment to the wood surface before the final finish coat. The geometry of the Anatomic Grip™ is identical across all colour options — colour is a surface decision, not a structural one. The same pressure distribution characteristics, same COF profile, same vibration damping — in seven finishes.
See the full handle options at the Colour Edition collection and the main product range.
Related Reading
- Walking Cane Handle Types Compared
- What Makes a Walking Cane Ergonomic?
- Oak vs. Aluminium Material Properties
- Walking Cane for Chronic Pain
Pressure mapping data from DaiWalk internal study (n=14 participants, 30kg vertical load, thin-film pressure array). Design process documentation from DaiWalk product development records. Material property data from published materials science references.
