The Seattle Splint: Quality Orthotics
From its deep heel pocket to its malleable shell, every element of the Seattle Splint is hand touched and manufactured for superior fit and accessibility. Explore its versatile clinical applications, key design attributes, and patient wear instructions.
Watch our in-depth video for a complete overview or jump straight to the sizing guide below.
Overview and Use of the Seattle Splint and Optional Thigh Extension
Time: 10:01
Wide-Ranging Trauma & Post-Op Support
The Seattle Splint is engineered to manage complex orthopaedic, vascular, and neurological cases. From acute stabilization to contracture prevention, it provides rigid, reliable immobilization across diverse clinical environments.
Level 1 Orthopaedic Trauma
- Open fractures
- Closed fractures
- Wounds
- Fasciotomy/Flap
- Nerve injuries
Plastics/Burns
- Grafts
- Wounds
- Fasciotomy/Flap
General and Vascular Surgery
- Multiple trauma
- Wounds
- PVD/Diabetes
Orthopaedic Fracture Stabilization
- Calcaneal
- Pilon/Talar
- Tibia/Fibular
- Ankle
- Distal femur
- Tibial plateau
- Complex knee
Neuro
- Contracture prevention: TBI, CVA, SCI
General Orthopaedics
- Hindfoot injuries
- Forefoot injuries
- Plantar fasciitis
- Heel spurs
- Tibia/Fibular fractures
The Anatomy of Advanced Support
See how our unique structural components work together to deliver a higher standard of orthotic care.
Sizing & Fitting Guidelines
The Seattle Splint is available in four adult and three pediatric sizes to accommodate a wide range of patient demographics. Use the reference chart to determine size.
When a patient’s measurements fall between two sizes, clinical judgment should prioritize anatomical support and mobility safety.
Ensure the following clinical parameters are met.
Fitting Checklist
- Knee Clearance: Allow for a hand’s width of space between the back of the knee and the top of the splint.
- Toe Protection: The toes should not extend over the splint.
- Range of Motion: The splint must allow full knee flexion.
| Height | Unisex Shoe Size | Calf Length | Size | Item# |
|---|---|---|---|---|
| 6′1½″+ | 13+ | 20½″–23+″* | Extra Large | 100 or 2100 |
| 5′10″–6′1″ | 10–12.5 | 18½″–20¼″* | Large | 101 or 2101 |
| 5′5″–5′9½″ | 7–9.5 | 16½″–18¼″ | Medium | 102 or 2102 |
| 5′–5′4½″ | 5–7 | 14″–16¼″* | Small | 103 or 2103 |
| 3′5″–5′ | 3–5 | 12½″–14″ | Youth | 104 |
| 9–12 | Child | 105 | ||
| 5–8 | Toddler | 106 |
*When fitting an adult patient to attach a Thigh Extension, calf length is the sole determinant for the Seattle Splint size. Calf length is the distance from the heel to the popliteal space with the leg extended.
Putting on the Seattle Splint
1. Place foot flat against the foot plate.
2. Gently yet firmly, push down at the anterior ankle to slide the foot down into the splint at a neutral position.
3. Cross the padded ankle strap over the ankle to buckle.
4. Slide the bar of the slide buckle into the hook buckle.
5. Pull on the strap to tighten. Do not overtighten — a finger should easily slide under the pad.
6. Cross the second ankle strap over the pad. Buckle. Bring the padded shin strap across the tibia and buckle.
Using the Buckles
1. To buckle, the slide bar goes onto the hook.
2. To tighten, pull strap end.
3. To loosen, pull the strap over the hook to release.
4. To unhook, turn the slide bar like a key to slip it out of the hook.
How to Customize the Seattle Splint
Engineered for adaptability. The Seattle Splint features a malleable shell.
Conform to the Calf
While the Seattle Splint is on the patient, cradle the back of the splint in your hands and squeeze the sides together to narrow and form the splint around the calf.
Widen the Calf
Place the back of the Seattle Splint against your chest for support as you spread the splint’s sides to the desired calf width.
Adjust the Ankle Width and Angle
Position the Seattle Splint over the back of a chair and push down above the weld line, then below it, to adjust the splint’s ankle width or increase dorsiflexion by up to 5 degrees. Never push directly on the weld line.
Professional Fit & Support
Our orthoses are professional-grade products designed to be custom-fit by trained practitioners. If the video is not sufficient for training, we gladly provide personalized training and clinical support via video conferencing.
Additional Specifications
For precise measurements and specialized components, explore our dedicated resource guides. View Sizing Chart.
Wide-Ranging Trauma & Post-Op Support
The Seattle Splint is engineered to manage complex orthopaedic, vascular, and neurological cases. From acute stabilization to contracture prevention, it provides rigid, reliable immobilization across diverse clinical environments.
Level 1 Orthopaedic Trauma
- Open fractures
- Closed fractures
- Wounds
- Fasciotomy/Flap
- Nerve injuries
Plastics/Burns
- Grafts
- Wounds
- Fasciotomy/Flap
General and Vascular Surgery
- Multiple trauma
- Wounds
- PVD/Diabetes
Orthopaedic Fracture Stabilization
- Calcaneal
- Pilon/Talar
- Tibia/Fibular
- Ankle
- Distal femur
- Tibial plateau
- Complex knee
Neuro
- Contracture prevention: TBI, CVA, SCI
General Orthopaedics
- Hindfoot injuries
- Forefoot injuries
- Plantar fasciitis
- Heel spurs
- Tibia/Fibular fractures
The Anatomy of Advanced Support
See how our unique structural components work together to deliver a higher standard of orthotic care.
Sizing & Fitting Guidelines
The Seattle Splint is available in four adult and three pediatric sizes to accommodate a wide range of patient demographics. Use the reference chart to determine size.
When a patient’s measurements fall between two sizes, clinical judgment should prioritize anatomical support and mobility safety.
Ensure the following clinical parameters are met.
Fitting Checklist
- Knee Clearance: Allow for a hand’s width of space between the back of the knee and the top of the splint.
- Toe Protection: The toes should not extend over the splint.
- Range of Motion: The splint must allow full knee flexion.
| Height | Unisex Shoe Size | Calf Length | Size | Item# |
|---|---|---|---|---|
| 6′1½″+ | 13+ | 20½″–23+″* | Extra Large | 100 or 2100 |
| 5′10″–6′1″ | 10–12.5 | 18½″–20¼″* | Large | 101 or 2101 |
| 5′5″–5′9½″ | 7–9.5 | 16½″–18¼″ | Medium | 102 or 2102 |
| 5′–5′4½″ | 5–7 | 14″–16¼″* | Small | 103 or 2103 |
| 3′5″–5′ | 3–5 | 12½″–14″ | Youth | 104 |
| 9–12 | Child | 105 | ||
| 5–8 | Toddler | 106 |
*When fitting an adult patient to attach a Thigh Extension, calf length is the sole determinant for the Seattle Splint size. Calf length is the distance from the heel to the popliteal space with the leg extended.
Putting on the Seattle Splint
1. Place foot flat against the foot plate.
2. Gently yet firmly, push down at the anterior ankle to slide the foot down into the splint at a neutral position.
3. Cross the padded ankle strap over the ankle to buckle.
4. Slide the bar of the slide buckle into the hook buckle.
5. Pull on the strap to tighten. Do not overtighten — a finger should easily slide under the pad.
6. Cross the second ankle strap over the pad. Buckle. Bring the padded shin strap across the tibia and buckle.
Using the Buckles
1. To buckle, the slide bar goes onto the hook.
2. To tighten, pull strap end.
3. To loosen, pull the strap over the hook to release.
4. To unhook, turn the slide bar like a key to slip it out of the hook.
How to Customize the Seattle Splint
Engineered for adaptability. The Seattle Splint features a malleable shell.
Conform to the Calf
While the Seattle Splint is on the patient, cradle the back of the splint in your hands and squeeze the sides together to narrow and form the splint around the calf.
Widen the Calf
Place the back of the Seattle Splint against your chest for support as you spread the splint’s sides to the desired calf width.
Adjust the Ankle Width and Angle
Position the Seattle Splint over the back of a chair and push down above the weld line, then below it, to adjust the splint’s ankle width or increase dorsiflexion by up to 5 degrees. Never push directly on the weld line.
Professional Fit & Support
Our orthoses are professional-grade products designed to be custom-fit by trained practitioners. If the video is not sufficient for training, we gladly provide personalized training and clinical support via video conferencing.
Additional Specifications
For precise measurements and specialized components, explore our dedicated resource guides. View Sizing Chart.
