Good　reduction　and　appropriate　fixation　are　critical　for　long　bone　fractures,　however,　neither　has　been　addressed　satisfactorily.　Robotic　and　navigation　techniques　can　help　improve　the　reduction　accuracy.　However,　their　clinical　applications　are　limited　by　high　cost　and　complexity　in　operation.　The　aim　of　this　study　was　to　discuss　the　feasibility　of　a　customized　external　fixator　in　treating　long　bone　fractures.　We　combined　a　computer-assisted　reduction　technique　with　3D　printing　to　develop　a　customized　external　fixator　for　treating　three　cases　of　tibial　fractures.　The　reduction　accuracy　and　fixation　results　were　discussed　in　terms　of　operation　time,　X-ray　examinations　after　operation,　and　limb　function　recovery.　Good　reduction　results　were　obtained　on　all　three　tibial　fractures　with　an　average　lateral　displacement　of　2.04　mm　(+/-　1.53)　and　an　angulation　of　2.54A　degrees　(+/-　1.33).　The　surgery　was　not　experience-dependent,　and　no　intra-operative　X-ray　examinations　were　conducted.　The　average　operative　time　was　8.67　minutes　(+/-　0.58).　A　novel　customized　external　fixator　for　the　treatment　of　tibial　fractures　has　the　advantages　of　easy　manipulation,　accurate　reduction,　appropriate　fixation,　minimal　invasion　and　experience-independence,　and　therefore　has　huge　potential　in　clinical　applications.