Muscle function preservation type total temporomandibular joint prosthesis

A muscle function preservation type total temporomandibular joint prosthesis, wherein the prosthesis at least comprises from top to bottom:

• an articular fossa member (1) and an articular head member (2) abutting against the articular fossa member (1);
• wherein the articular fossa member (1) comprises a zygomatic arch retaining portion (12) for being fixed to a zygomatic arch of a human body and an articular fossa portion (11) connected with the zygomatic arch retaining portion (12);
• the articular head member (2) comprises a mandibular trailing edge fixing plate (21), a sigmoid notch fixing plate (22) and an articular head portion (23), wherein the articular head portion (23) has a shape of a complete or partial condyle and abuts against the articular fossa member (1);
• the mandibular trailing edge fixing plate (21) is connected to a bottom end of the articular head portion (23) and extends downwards, and has a plate-shaped structure and comprises a mandibular-trailing-edge-surface attaching surface which is configured to fits snugly with a surface of a trailing edge of a mandible of the human body;
• and the sigmoid notch fixing plate (22) protrudes from one side of the mandibular trailing edge fixing plate (21) and extends in a direction away from the mandibular trailing edge fixing plate (21), and has a plate-shaped structure and comprises a mandibular-ramus-proximal-sigmoid-notch-portion attaching surface which is configured to fits snugly with a proximal sigmoid notch portion of a mandibular ramus of the human body;
• wherein a top end of the articular head portion (23) is a concave-convex bending portion, a proximal bone surface of the articular head portion is a concave surface, a distal bone surface of the articular head portion is a convex surface, and the distal bone surface is in a concave-convex fit with the articular fossa portion (11).