Dislocation of the four and fifth carpometacarpal joints can be managed conservatively with good outcome if diagnosed early. However, if the initial reduction is unstable or there is a delay in diagnosis or presentation, it is imperative to use K-wires for fixation after closed open reduction. K-wire fixation often tend to displace in early range of motion. Different treatment options are described, with no clear consensus on their management. We have developed a method of linking wire type external fixation (Ichi-Fixator, Neo-medical, Japon), using metal clamp, after these two wires insertion. We have sought a technique of increasing the stability and rigidity of percutaneous fixation. The purpose of this case report is to present a patient with dislocation of the four and fifth CMC joint that was satisfactorily treated with closed reduction and percutaneous fixation with linking wire type external fixation. A 27-year-old male presented with severe pain on the right carpus following a fall with injury to right hand and diagnosed as the dislocation of four and fifth CMC dislocation. Then we decided to perform external fixation with use of linking wire type external fixator. Before operation, QDASH was 52.95, VAS was 5 10. Immediately after the operation, patient allows starting range of motion without immobilization and a light dressing was applied. At last follow-up, QDASH was 0.00, VAS score was 0 10. Grip power was 95 % compared with contralateral side. The patient was doing all routine activities with normal grip strength and full range of motion at wrist without any discomfort. This linking wire type external fixator enable to reduce anatomical failure because of their way of fixation. Whereas conventional K-wire fixation fix as two-line fixation such as cross-pinning, this linking wire type external fixator enable to fix as two or three dimensional fixation. These differences will lead to protect secondary displacement after immediately mobilization. This result proposes that linkage of wires permits omission of all additional external splintage. This may lead to omit joint stiffness and consequent for hand therapy. Carpometacarpal (CMC) dislocations are prone to wrist instability if not treated promptly. We report a case of dislocation of four and fifth CMC joint successfully managed operatively with use of linking wire type external fixator. Linking wire type external fixator enable to increase the security of fixation and facilitate post-operative mobilization.