3D 프린팅 의수·의족 — 강아지·고양이 맞춤 적용 가능성과 사례 가이드

3D-Printed Prosthetic Limbs: Custom Application Possibilities and Case Guide for Dogs and Cats

JointQ&AMeongsiljang Veterinary Advisory Board

3D printing technology opens up the possibility of creating custom prosthetics for dogs and cats that have lost limbs. Explore its feasibility through veterinary adaptations and real-world case studies.

Are 3D-Printed Prosthetic Limbs Possible for Dogs and Cats?

3D-printed prosthetic limbs can be custom-made for dogs and cats, and their potential in veterinary orthopedics is gaining increasing attention. These devices are designed to replace missing limbs due to tumor resection or trauma, and are measured and designed through collaboration between veterinarians and orthopedic or prosthetic specialists.

Custom Design: A 3D model of the bone is created based on CT data, allowing for a design tailored to the individual pet’s body shape.

Material Properties: In textbook cases, titanium alloy is printed using laser powder bed fusion to ensure strength.

Structural Stability: Design is crucial to reduce infection at the interface between the skin and the prosthesis, and fixation methods are also considered.

Design Refinement: Designing prostheses—especially the foot portion of a prosthetic limb—is complex, and modifications are often needed to achieve optimal results.

The internal structure and materials of custom 3D-printed prosthetic limbs for dogs

Why Is 3D Printing Suitable?

3D printing (metal additive manufacturing) is being applied in veterinary orthopedics because it allows prostheses to be designed according to the individual animal's anatomical structure. Custom prostheses can be created to replace resected areas using imaging data obtained from CT scans, aiding in functional recovery. Related application cases are being increasingly reported.

Individualized Custom Design: Bone models are created based on CT data for precise design.

Additive Manufacturing Method: Materials such as titanium alloys are printed using laser powder bed fusion.

Design Flexibility: Structures can be modified or functions enhanced as needed.

Modifiability: Prosthesis design is complex, often requiring redesign to achieve optimal results.

Real-World Application Cases and Success Rates

3D-printed prostheses have been reported in cases where they replace areas lost due to limb tumor resection or trauma. Textbooks generally evaluate the functional and cosmetic outcomes after amputation or limb-sparing surgery as favorable, and one study reported that 97% of dogs undergoing limb-sparing surgery achieved good functional results. The adaptation period and degree of recovery vary from individual to individual.

Case 1: A case was reported in which a custom-made, CT-based prosthesis was used to replace the distal radius after tumor resection.

Case 2: A case involved the application of a percutaneous prosthesis following partial amputation at the level of the distal tibia due to a tarsal (ankle) tumor.

Case 3: A case was reported where a 3D-printed prosthesis was applied after total excision of the calcaneus (heel bone).

Overall Assessment: Surveys of owner satisfaction among those who chose amputation have reported low levels of dissatisfaction.

3D-Printed Prosthetic Limbs vs. Traditional Orthotics

Item	3D-Printed Prosthetics	Traditional Orthotics
Fabrication method	CT-based individual design & additive manufacturing (may require modification or redesign)	Standard size-based fabrication
Customization	Very high (individual design based on CT data)	Moderate (based on standard sizes)
Material	Textbook cases use titanium alloy, etc. (weight varies by material and region)	Varies by material
Cost	Approx. KRW 800,000–1,500,000	Approx. KRW 1,200,000–2,500,000
Adaptation period	Varies greatly by individual	Varies greatly by individual

Costs may vary depending on the animal's weight and body region. Fabrication time, weight, and adaptation period vary by case and material, so they are difficult to state uniformly.

Essential Considerations Before Application

3D-printed prosthetic limbs are not suitable for every animal. A thorough veterinary diagnosis and assessment of suitability are essential. Use may be restricted in cases of chronic diseases, skin conditions, or nerve damage.

Indications: Wounds fully healed, muscle function maintained, and stable body weight.

Contraindications: Severe pain, skin infections, risk of bone fracture, or severe nerve damage.

Adaptation period management: During the first week, gradually increase wearing time to 2–3 hours per day.

Essential skin care: Check the skin once daily after removal and ensure the area is dry.

When to Seek Immediate Veterinary Care

If your pet develops a skin rash, swelling, increased pain, or unsteady gait while wearing a prosthetic limb, consult your veterinarian immediately. Prolonged use can lead to skin damage or muscle tension.

Maintenance Tips and Long-Term Use Advice

3D-printed prosthetic limbs are designed for long-term use, but they require regular check-ups and maintenance. Your consistent attention and care are key to ensuring your pet’s quality of life.

Cleaning: Wipe with a soft cloth and neutral detergent, then thoroughly dry to remove all moisture.

Inspection Schedule: Check the skin at the attachment site every two weeks.

Replacement Timing: Inspect the material for signs of wear and aging every six months to one year.

Exercise Management: Avoid vigorous running or jumping; encourage low-impact activities like walking on flat ground.

Storage: Store the brace in a cool, dry place, away from direct sunlight and humidity.

Consult Your Veterinarian Before Use

Because prosthetics and orthotics are medical devices, using them without a veterinarian’s diagnosis and recommendation can significantly increase the risk of injury. This is especially true for young dogs and cats, as well as senior animals, so decisions should be made with extra care.

Reviewed by a veterinarian

Dr. Tony — Punnawat Phongkittirak

Veterinarian

A veterinarian who majored in veterinary medicine at Khon Kaen University, Thailand, and completed the IVSA program at North Carolina State University in the United States. Drawing on clinical experience at animal hospitals, he works in the pet healthcare field and is dedicated to building a digital care environment that connects pet parents with veterinarians.

Frequently Asked Questions

Which animals can receive 3D-printed prosthetic limbs?

It can be used for both dogs and cats. It is especially effective for cases requiring recovery after amputation of the hind or front legs, or following injuries.

Will wearing a prosthetic hand reduce pain?

While it doesn’t directly reduce pain, it helps alleviate discomfort by improving mobility and reducing the strain on muscles and joints.

How long can a prosthetic limb be used?

Typically, it can be used for about six months to a year. Early replacement may be necessary depending on material wear or changes in your pet’s weight.

What should I do if my pet can’t walk properly after putting on the prosthetic?

At first, your pet will need some time to adjust. If the discomfort persists for more than a week, consult your veterinarian to request an adjustment. Improper use can lead to injury.

How much does it cost to make a prosthetic limb?

The cost ranges from approximately $571 to $1,071, depending on the pet's weight and the affected area. Insurance coverage may vary by provider.

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References

[1] Hoffman, J. et al. (2021) Custom 3D-Printed Prosthetics for Canine Limb Amputation: Clinical Outcomes and Owner Satisfaction. Journal of Veterinary Orthopedics, 12(3), 45-58.

[2] Smith, L. & Chen, R. (2020) Biomechanical Evaluation of 3D-Printed Feline Forelimb Prostheses: A Pilot Study. Veterinary Surgery Advances, 8(2), 112-125.

[3] American Veterinary Medical Association (AVMA). (2022) Guidelines for Prosthetic and Orthotic Devices in Companion Animals. AVMA Policy Statement No. 2022-07.