Thumb carpometacarpal arthroscopy: A topographic, anatomic study of the thenar portal

Arthroscopy of the Trapeziometacarpal and Metacarpophalangeal Joints

“…14 For this reason, Walsh et al also described another portal, the thenar portal, which was much more volar, actually passing through the thenar muscles to allow for improved triangulation and visualization of the joint via a presumably safer location. 15 A further advantage of this portal is that it does not violate the deep, anterior oblique ligament, which, as also pointed by Bettinger and Berger, serves as the major restraining structure against dorsal subluxation. 13 Gonzalez et al also described portals for better visualization.…”

Thumb Carpometacarpal Ligaments Inside and Out: A Comparative Study of Arthroscopic and Gross Anatomy from the Robert A. Chase Hand and Upper Limb Center at Stanford University

“…16,17 These two portals were chosen given our clinical preference for suitable triangulation and visualization of the joint. An arthroscopy traction towel was used (Linvatec, Largo, FL), with 10-15 lbs of traction.…”

“…16 The ulnar tubercle is defined as the tapered peak on the ulnar aspect of the trapezium, it resembles the pommel of a saddle. The ulnar tubercle is straddled by UCL and DTM-1 (►Fig.…”

Radial Portal Tendon Harvest and Interposition in Arthroscopic Treatment of Thumb Basilar Joint Osteoarthritis

“…[1][2][3][4]7 The 1-R access site is modified by a larger 1.0-cm chevron incision with the apex radial and volar at the interface of glabrous and nonglabrous skin to expose the distal insertion of the accessory abductor pollicis longus (AAPL) tendon group and the abductor pollicis longus (APL) tendon group (Fig. 1).…”