Technique modification for tendon interposition arthroplasty with ligament reconstruction (see text). A, Holes made in the thumb metacarpal base. B, Flexor carpi radialis tendon passed through bone tunnel while index and thumb metacarpal bases are approximated. C and D, Flexor carpi radialis tendon passed between thumb and index bases and secured. E and F, Suture woven through remaining flexor carpi radialis tendon, which is bunched down to form the interposition mass. G, Folded flexor carpi radialis tendon secured to the volar radial capsular tissue. SEE TECHNIQUE 73.26.