Ankle and foot orthosis SpryStep® Original

XSSL

Overview
SpryStep® Original is a lightweight posterior dynamic ankle-foot orthosis (AFO) designed to assist adults with foot drop and related gait deviations. The posterior spiral strut amplifies energy return and supports dorsiflexion during swing, aiming to improve walking efficiency and reduce fall risk.

Key benefits

• Lightweight composite construction with carbon fibre elements for a favorable stiffness-to-weight ratio.
• Posterior spiral strut design that enhances energy return to assist dorsiflexion during gait.
• Trimmable forefoot section for adaptable fitting across shoe sizes and foot shapes.
• Low-profile geometry to facilitate wear inside conventional footwear and support patient adherence.

Availability
Offered in sizes XS to XL with dedicated right and left versions to match laterality and individual anatomy.

Indications

• Biomechanical deficits of neurological, traumatic or muscular origin
• Weak dorsiflexors
• Fatiguable foot drop
• Foot drop
• Foot slap
• Plantar flexor strength ≤ 4
• Mild spasticity of the foot and ankle
• Mild knee instability during stance phase
• Knee hyperextension
• Circumduction
• Vaulting (contralateral ankle plantarflexion)
• High knee gait
• Hip hiking / contralateral trunk bending

Contraindications

• Diagnosis not confirmed
• Direct application on broken or infected skin
• Known allergy to any component materials
• Patients weighing >120 kg (250 lbs)
• Severe sensory loss in the lower limb
• Open ulcers of the foot, ankle or lower leg
• Moderate to severe edema of the affected limb
• Moderate to severe spasticity of the foot and ankle
• Triplanar instability
• Plantarflexion contracture
• Moderate to severe foot deformities
• Moderate to severe ankle instabilities
• Running or other high-impact activities

Sizes (table)
Size | Shoe size
Size XS | 33 - 37
Size S | 36 - 39
Size M | 38 - 42
Size L | 41 - 44
Size XL | 44 - 47

Materials
Rigid components: carbon fibre, glass fibre, high-density polyethylene. Textile components: polyamide, elastane, polyurethane, ethylene vinyl acetate.

Patient profile

• Adults
• Neurological patients (e.g. stroke survivors, multiple sclerosis) or individuals with traumatic or muscular biomechanical deficits causing weak dorsiflexion

Clinical & regulatory information
Class I medical device (CE marked). Cycle testing performed according to ISO 10328 using a servo-pneumatic test system. Clinical evidence referenced (MECASPRY study presented at ISPRM 2022).

Technical characteristics / specifications

• Commercial name: SpryStep® Original
• Device type: Posterior dynamic ankle-foot orthosis (AFO)
• Medical device class: Class I (CE marked)
• Sizes: XS, S, M, L, XL (see table above for shoe size ranges)
• Availability: Right and left versions
• Rigid materials: carbon fibre, glass fibre, high-density polyethylene
• Textile materials: polyamide, elastane, polyurethane, ethylene vinyl acetate
• Maximum recommended patient weight: 120 kg (250 lbs)