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Joint Prostheses

Elbow Hip Finger Knee Ankle

Finger joint prostheses

There are different kinds of joint prostheses for each of the finger’s three joint.
Finger joint prostheses are comprised of two parts, i.e., a distal phalanx side and middle phalanx side for DIP (the closest joint to the fingertip), middle phalanx side and proximal phalanx side for PIP (the second closest joint to the fingertip), and proximal phalanx side and metacarpal side for MP (the joints on the back of the hand).
The metal head has a smooth curved surface. Finger function is reconstructed by a head and socket combination that enables surfaces of the finger joint prosthesis to slide.
Teijin Nakashima Medical offers various sizes of finger prostheses suited for Japanese and Asian people.


What are “Joint Prostheses” ?

Joint Prostheses are artificial materials that are used for regaining primary function of deformed or damaged joints. It is expected that the replacement of damaged joints can reduce pain and enhance Activities of Daily Living (ADL) and improve Quality of Life (QOL).

What are “Teijin Nakashima Medical’s Joint Prostheses” ?

Teijin Nakashima Medical’s joint prostheses come in various sizes suited for Japanese and Asian people, and can be selected according to a patient’s bone configuration.

Teijin Nakashima Medical has developed suitable materials and designs for each joint. A reduction of wear volume in the resin material is expected from mirror-polished metallic materials used for the sliding articular surfaces.

Sized to the patient, knee prostheses are attached to exposed area of the bone.


Applicable diseases of artificial joints


Osteoarthritis is a disease associated with a variety of factors such as muscle weakness, obesity, aging, etc. Progressive symptoms cause joint degeneration, which results in the development and progression of osteoarthritis. Symptoms may include joint pain and swelling in the knees, hips, elbows and shoulders. It occurs more frequently in females than in males, with age.

Rheumatoid arthritis

Rheumatoid arthritis is a disease that causes inflammation, pain, swelling and stiffness in the joints. As the disorder progresses, it leads to joint degeneration and dysfunction.

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