[Interposition arthroplasties in the area of the proximal carpal row (lunate and scaphoid replacement/partial replacement].

Prostheses are recommended for replacement of the scaphoid. Results of tendon interposition after resection of small proximal fragments are unpredictable. Therefore alternative procedures like liquid silicone casts or replacement by a lunate prosthesis (or part of the prosthesis of the scaphoid) have to be evaluated. If after removal of the lunate a prosthesis does not fit into the cavity we recommend filling this cavity with liquid silicone.