Table 3.

Prostheis type,synonymous advantages,Disadvantages,Indications & contraindications

Prostheis type	synonymous	advantages	Disadvantages	Indications & contraindications
Partial Ulnar head replacement DRUJ prosthesis	resurfacing	TFCC peresering, axial load preservation through ulna	radial notch erosion scondary to DRUJ mismatch	a good choice in patients with intact DRUJ ligaments but joint osteoarthritis
Complete ulnar head replacement DRUJ prosthesis	unipolar	Can be used in TFCC injuries	radial notch erosion scondary to DRUJ mismatch, DRUJ instability	A good choice in failed Darrach procedure
Multicomponent DRUJ prosthesis	Total	DRUJ mismatch will not happened	the TFCC is scarified, axial force transmit only through radiocarpal joint, needs vast dissection of soft tissue to place radial component, tenosynovitis	Good choice in other failed procedures
Kapandji extension DRUJ prosthesis	intra-osseous	TFCC sparing, simply converting to Kapandji procedure	teoricaly may affect forearm axial ROM	indicted when the TFCC is intact or with minor defect, good choice in failed Kapandji procedure