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Following is a brief description of the commonly used dorsal portals in performing wrist arthroscopy. These portals are in relation to the dorsal extensor commpartments. 1-2 Portal Structures visualized are limited to the radial half of the wrist. Radius: Scaphoid and lunate fossa and dorsal rim of radius Carpus: Proximal and radial scaphoid, proximal lunate Volar capsule: Oblique views of the radioscaphocapitate (RSC) ligament, long radiolunate ligament (LRL), and short radiolunate ligament (SRL) Dorsal capsule: Oblique views of the dorsal radiocarpal ligament (DRCL) TFCC: Poorly visualized 3-4 Portal This is almost a complete panoramic view of the entire volar radiocarpal joint. Radius: Scaphoid and lunate fossa and volar rim of radius Carpus: Proximal scaphoid and lunate, dorsal and membranous SLIL Volar capsule: RSC, radioscapholunate ligament (RSL), LRL, and ulnolunate ligament (ULL) Dorsal capsule: Oblique views of the DRCL insertion onto the dorsal SLIL TFCC: Radial insertion, central portion, ulnar attachment, palmar and dorsal radioulnar ligaments (PRUL, DRUL), and prestyloid recess 4-5 Portal This portal gives improved views of the ulnar aspect of the radiocarpal joint, including TFCC, and is useful for instrumentation when combined with the 6R portal. Radius: Lunate fossa and volar rim of radius Carpus: Proximal lunate, triquetrum, and dorsal and membranous LTIL Volar capsule: RSL, LRL, and ULL Dorsal capsule: Poorly seen TFC: Radial insertion, central portion, ulnar attachment, PRUL, and prestyloid recess 6R Portal This gives a more direct line of sight with the dorsal LTIL and is typically used for instrumentation or outflow. Radius: Poorly seen Carpus: Proximal lunate, triquetrum, dorsal, and membranous LTIL Volar capsule: ULL and ulno-triquetral ligament (ULT) Dorsal capsule: Poorly seen TFCC: Radial insertion, central portion, ulnar attachment, PRUL, and prestyloid recess 6U Portal This is also largely used for outflow, but is also useful for instrumentation for debridement of palmar LTIL tears in combination with the VU portal. Radius: Sigmoid notch Carpus: Proximal triquetrum and membranous LTIL Volar capsule: Oblique views of the ULL and ULT Dorsal capsule: Oblique views of the DRCL TFCC: Dorsal rim and radial attachment Radial Midcarpal Portal Volar: Continuation of the RSC ligament Radial: STT joint and distal scaphoid pole Proximal: SLIL joint, LTIL joint, distal scaphoid, and distal lunate Distal: Proximal capitate, capitohamate ligament, and oblique views of proximal hamate Ulnar Midcarpal Portal Volar: Continuation of the volar ulnocarpal ligament (important in midcarpal instability) Radial: Distal articular surface of the lunate and triquetrum and partial scaphoid Proximal: LTIL joint and SLIL joint Distal: Proximal hamate, capitohamate ligament, and oblique views of proximal capitate Dorsal DRUJ Proximal and Distal Portals Volar: Palmar radioulnar ligament* Radial: Sigmoid notch and radial attachment of TFC Ulnar: Limited view of dorsal radioulnar ligament Distal: Proximal surface of articular disc