Stump Shock Absorber
The stump shock absorber is fitted at the end of the socket and protects the apex of the residual limb where volume varies during the day, or where there is a large change in limb morphology — for example in summer. It is made of low density silicone.
- Protects the residual limb apex where limb volume varies during the day
- Particularly useful with large seasonal changes in limb morphology
- Low density silicone
- Seven sizes: extra small, small, medium, large, extra large, ultra large, ultra extra large
- Sized by residual limb circumference: under 14 cm up to 36-38 cm
- Where the shock absorber is not wanted, a thermoplastic gel patch or distal cup can be used instead
Stump shock absorber must be insert at the end of the socket and protects stump’s apex in the socket if there are volume stump’s different during the day or when there is a big morphology variation of the stump during the day (in summer). Material of stump shock absorber is silicone with low density and low shore to guarantee stump’s comfort. There are several sizes of stump shock absorber: extra small, small, medium, large, extra large, ultra large, ultra extra large.
| Code | Size | Circumference of the stump |
| 4.001.01.XS | Extra Small | < 14 cm |
| 4.001.01.S | Small | 14-19 cm |
| 4.001.01.M | Medium | 20-23 cm |
| 4.001.01.L | Large | 24-27 cm |
| 4.001.01.XL | Extra Large | 28-31 cm |
| 4.001.01.XXL | Ultra Large | 32-35 cm |
| 4.001.01.XXX | Ultra Extra Large | 36-38 cm |
The patient can use patch in thermoplastic gel or distal cup to add stump’s protection, if the stump shock absorber is not wanted.
Key specifications
| Device Category | Stump shock absorber |
| Material | Low density silicone |
| Available Sizes | XS, S, M, L, XL, XXL, XXX |
| Product Code Series | 4.001.01 |
| Function | Protection of the residual limb apex against daily volume variation |
| Residual Limb Circumference | under 14 / 14-19 / 20-23 / 24-27 / 28-31 / 32-35 / 36-38 cm |
Ordering and technical support
Designed and manufactured in Italy by Roadrunnerfoot Engineering S.r.l. The full range is listed in the Roadrunnerfoot 2025 catalogue. Orthopedic technicians, clinics and international distributors can request technical data sheets, product codes, pricing and fitting support from our team.