{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,8]],"date-time":"2026-08-08T22:13:27Z","timestamp":1786227207171,"version":"build-2736575974"},"reference-count":23,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2025,1,6]],"date-time":"2025-01-06T00:00:00Z","timestamp":1736121600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Bioeng. Biotechnol."],"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>The most common postoperative complication of the Sauv\u00e9\u2012Kapandji (S-K) procedure is proximal ulnar stump instability. The distal oblique bundle (DOB) is a stable tissue used to stabilize the distal radioulnar joint. This study created finite-element models of the distal oblique bundle (DOB) to determine its effect on the proximal ulnar stump instability encountered during the Sauv\u00e9\u2012Kapandji procedure.<\/jats:p><\/jats:sec><jats:sec><jats:title>Purpose<\/jats:title><jats:p>We hypothesized that a proximal ulnar stump with distal oblique bundle reconstruction would provide greater stability than a proximal ulnar stump without distal oblique bundle reconstruction.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Detailed CT imaging data acquired from a pathological specimen of the wrist joint were imported into a finite-element analysis software package, and the regions of interest, including bone, cartilage, ligaments and tendons, were extracted to create a 3-dimensional model. The volar\/dorsal and medial\/lateral displacements of the proximal ulnar stump and the stress changes exhibited by the bone and distal oblique bundle tendon were measured with and without DOB reconstruction under 60\u00b0 pronation, neutrality, and 60\u00b0 supination.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>When utilizing DOB reconstruction, the displacement of the radius relative to the proximal ulna stump was approximately 17.89\u00a0mm in the neutral position. The bone stress values corresponding to the neutral position, 60\u00b0 pronation and 60\u00b0 pronation were 1.01, 18.32 and 14.69\u00a0MPa, respectively. The stress peaks of the DOB tendon structure corresponding to the neutral position, 60\u00b0 pronation and 60\u00b0 pronation were 0.07 MPa, 2.21 and 1.55\u00a0MPa, respectively. Without DOB reconstruction, the displacement of the radius relative to the proximal ulna stump was approximately 18.05\u00a0mm in the neutral position. Under 60\u00b0 pronation and 60\u00b0 supination, the displacement values were approximately 14.62\u00a0mm and 16.89 mm, respectively. The peak bone stress values corresponding to the neutral position, 60\u00b0 pronation and 60\u00b0 supination were 1.02, 18.29\u00a0MPa and 14.41 MPa, respectively. The stress peaks of the tendon structure corresponding to the neutral position, 60\u00b0 pronation and 60\u00b0 pronation were 0.03, 0.87 and 0.85\u00a0MPa, respectively.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>DOB reconstruction is capable of improving the stability of the proximal ulnar stump during the Sauv\u00e9\u2013Kapandji procedure.<\/jats:p><\/jats:sec>","DOI":"10.3389\/fbioe.2024.1482747","type":"journal-article","created":{"date-parts":[[2025,1,6]],"date-time":"2025-01-06T05:21:09Z","timestamp":1736140869000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":3,"title":["Comparative study regarding the stability of a proximal ulnar stump with or without distal oblique bundle reconstruction during the Sauv\u00e9\u2012Kapandji procedure: a finite-element analysis"],"prefix":"10.3389","volume":"12","author":[{"given":"Shanqing","family":"Yin","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chenxi","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yaopeng","family":"Huang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiadong","family":"Pan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xin","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaodong","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2025,1,6]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"325","DOI":"10.1016\/j.clinbiomech.2009.12.007","article-title":"A comparison of the quasi-static mechanical and non-linear viscoelastic properties of the human semitendinosus and gracilis tendons","volume":"25","author":"Abramowitch","year":"2010","journal-title":"Clin. 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