Articular fossa prosthesis and articular prosthesis with articular fossa prosthesis

An articular fossa prosthesis, disposed in a target skeleton and comprising an outer cup and a lining, wherein the outer cup is disposed in the target skeleton, the lining is disposed in the outer cup,

• a first communicating passage communicated with an articular capsule is disposed on the outer cup, inlets of the first communicating passage are disposed on a surface, exposed into the articular capsule, of the outer cup, and outlets of the first communicating passage are disposed on a surface, contacting with the lining, of the outer cup;
• and
• a second communicating passage communicated with the articular capsule is disposed on the lining, the second communicating passage comprises a plurality of inlets and a plurality of outlets, a part of the inlets of the second communicating passage are disposed on a surface, exposed into the articular capsule, of the lining, a part of the inlets of the second communicating passage are disposed on a surface, contacting with the outer cup, of the lining and communicated with the first communicating passage, outlets of the second communicating passage are disposed on a surface, contacting with an adapted articular head prosthesis, of the lining, and the second communicating passage guides a synovial fluid to a contact surface between the lining and the articular head prosthesis;
• the first communicating passage comprises a first tubular passage and a first grooved passage, the first tubular passage is disposed in the outer cup, inlets of the first tubular passage are disposed on the surface, exposed into the articular capsule, of the outer cup, the first grooved passage is disposed on an inner surface of the outer cup, the first tubular passage comprises a plurality of outlets, at least part of the outlets of the first tubular passage are disposed in the first grooved passage, the second communicating passage comprises a second tubular passage, the second tubular passage is disposed in the lining, inlets of the second tubular passage are disposed on the surface, exposed into the articular capsule, of the lining and the surface, contacting with the outer cup, of the lining, and outlets of the second tubular passage are disposed on the surface, contacting with the adapted articular head prosthesis, of the lining.