Integral hinge joint.
D000818:Animals; D001172:Arthritis, Rheumatoid / Q000601:surgery; D001698:Biomedical Engineering; D004285:Dogs; D005384:Finger Joint; D005385:Fingers / Q000601:surgery; D006227:Hand Deformities, Acquired / Q000601:surgery*; D006801:Humans; D010969:Plastics / Q000633:toxicity; D019736:Prostheses and Implants
D010969:Plastics