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It is well known that stability of external fixators is greatly influenced by its construct. Various rules have been documented to influence the stiffness and stability of external fixators. In this study, two clinical cases treated with a novel concept of cross self-locking rods external fixation construct were being described, coupled with biomechanical analysis of its stability in comparison with other constructs by using finite element study. These novel self-locking rods configuration proven improve strength by applying the same numbers of rod and pin with the delta frame construct in clinical practice. A validated three-dimensional (3D) model of the bone from a previous study was used and external fixator were designed via computer-aided design (CAD) modelling software, Solidworks. A 1500\u00a0N load representing the axial load compression during weight bearing was applied to the tibia with the distal segment of the fracture site secured without any movement. The clinical results showed bone healing process with both cases achieving bone union within the acceptable time. The results of the finite element study shows that the double cross self-locking rods construct had better stability since it showed optimum magnitude in relative micromotion (0.18\u00a0mm), lowest stress at the fracture site (189\u00a0MPa), displacement of fixator (13.4\u00a0mm), and stress at the fixator (687\u00a0MPa). In conclusion, double cross self-locking design could provide optimum stability of the external fixator construct by providing better stress distribution at the bone and external fixator, minimize displacement and micromotion at fracture fragments.<\/jats:p>","DOI":"10.1038\/s41598-025-97090-4","type":"journal-article","created":{"date-parts":[[2025,4,17]],"date-time":"2025-04-17T12:05:37Z","timestamp":1744891537000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Finite element analysis and clinical evaluation of cross locking external fixator configuration for distal third tibia fracture"],"prefix":"10.1038","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8375-4489","authenticated-orcid":false,"given":"Bing Wui","family":"Ng","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2259-3233","authenticated-orcid":false,"given":"Abdul Hadi","family":"Abdul Wahab","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Abdul Muttalib","family":"Abdul Wahid","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-3826-006X","authenticated-orcid":false,"given":"Nik Nur Ain Azrin","family":"Abdullah","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohammed Rafiq","family":"Abdul Kadir","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8845-7202","authenticated-orcid":false,"given":"Muhammad Imam","family":"Ammarullah","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2705-8379","authenticated-orcid":false,"given":"Muhammad Hanif","family":"Ramlee","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,4,17]]},"reference":[{"key":"97090_CR1","doi-asserted-by":"publisher","first-page":"102246","DOI":"10.1016\/j.jcot.2023.102246","volume":"44","author":"J Dheenadhayalan","year":"2023","unstructured":"Dheenadhayalan, J., Nagashree, V., Devendra, A., Velmurugesan, P. 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