Ligament reconstruction combined with tendon interposition (LRTI) arthroplasty to treat the basal joint arthritis of the thumb were reviewed in 10 thumbs of 9 patients with an average follow-up of 2.7 years, ranging from 1 to 5 years. The procedure consists of excision of the arthritic trapezium, reconstruction of the attenuated palmar oblique ligament with distally based radial half of the flexor carpi radialis tendon, and maintenance of the “arthroplasty space” with palmaris longus anchovy spacer. This technique consistently relieve pain, Improve pinch and grip strength, and restore thumb mobility and the first web space. Proximal migration and subluxatoin of the first metacarpal averaged 16.8% and 9.5% respectively. Both values are comparable with those reported by Burton and Pellegrini in the original LRTI arthroplasty and are superior to those of silicon implant arthroplasty or tendon interposition arthroplasty with out ligament reconstruction. We prefer the LRTI arthoplasty as the treatment of advanced basal joint arthritis of the thumb.