{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T01:57:07Z","timestamp":1760234227487,"version":"build-2065373602"},"reference-count":24,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2021,4,22]],"date-time":"2021-04-22T00:00:00Z","timestamp":1619049600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Medicina"],"abstract":"<jats:p>Background and objectives: Internal fixation is one of the most effective methods for the treatment of proximal femur fractures. The migration of implants after the operation can seriously affect the reduction of treatment and even cause complications. Traditional diagnosis methods can not directly measure the extent of displacement. Methods: Based on the analysis of Hansson pins, this paper proposes a measurement method based on three-dimensional matching, which uses computerized tomography (CT) images of different periods of patients after the operation to analyze the implants\u2019 migration in three-dimensional space with the characteristics of fast speed and intuitive results. Results and conclusions: The measurement results show that the method proposed in this paper has more minor errors, more flexible coordinate system conversion, and more explicit displacement analysis than the traditional method of manually finding references in CT images and measuring displacement.<\/jats:p>","DOI":"10.3390\/medicina57050406","type":"journal-article","created":{"date-parts":[[2021,4,22]],"date-time":"2021-04-22T21:25:56Z","timestamp":1619126756000},"page":"406","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Migration Measurement of Pins in Postoperative Recovery of the Proximal Femur Fractures Based on 3D Point Cloud Matching"],"prefix":"10.3390","volume":"57","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0717-9675","authenticated-orcid":false,"given":"Kaifeng","family":"Liu","sequence":"first","affiliation":[{"name":"Department of Human and Artificial Intelligent Systems, Graduate School of Engineering, University of Fukui, Fukui 910-8507, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9744-8033","authenticated-orcid":false,"given":"Kouki","family":"Nagamune","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Keisuke","family":"Oe","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ryosuke","family":"Kuroda","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takahiro","family":"Niikura","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,4,22]]},"reference":[{"key":"ref_1","first-page":"25","article-title":"Intra-Pelvic Migration of Sliding Hip Screw During Osteosynthesis of Hip Fracture: A Rare Avoidable Intraoperative Complication","volume":"5","author":"Zarattini","year":"2016","journal-title":"J. Orthop. Case Rep."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"937","DOI":"10.1302\/0301-620X.82B7.0820937","article-title":"The management of intracapsular fractures of the proximal femur","volume":"82","author":"Parker","year":"2000","journal-title":"J. Bone Jt. Surg. Br. Vol."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"15","DOI":"10.1016\/j.jcot.2012.04.001","article-title":"Proximal femoral fractures: Principles of management and review of literature","volume":"3","author":"Mittal","year":"2012","journal-title":"J. Clin. Orthop. Trauma"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"677","DOI":"10.1093\/oxfordjournals.aje.a008800","article-title":"Heterogeneity of hip fracture: Age, race, sex, and geographic patterns of femoral neck and trochanteric fractures among the US elderly","volume":"143","author":"Karagas","year":"1996","journal-title":"Am. J. Epidemiol."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1016\/j.otsr.2016.10.013","article-title":"Internal fixation of intra-capsular proximal femoral fractures in patients older than 80 years: Still relevant? Multivariate analysis of a prospective multicentre cohort","volume":"103","author":"Reina","year":"2017","journal-title":"Orthop. Traumatol. Surg. Res."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"679","DOI":"10.1111\/j.1445-2197.2012.06256.x","article-title":"Prospective randomized controlled trial comparing dynamic hip screw and screw fixation for undisplaced subcapital hip fractures","volume":"83","author":"Watson","year":"2012","journal-title":"Anz. J. Surg."},{"key":"ref_7","first-page":"166","article-title":"A randomized, prospective study comparing intertrochanteric hip fracture fixation with the dynamic hip screw and the dynamic helical hip system in a community practice","volume":"31","author":"Fitzpatrick","year":"2011","journal-title":"Iowa Orthop. J."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"42","DOI":"10.1097\/BOT.0000000000001656","article-title":"Internal Fixation Versus Arthroplasty for the Treatment of Nondisplaced Femoral Neck Fractures in the Elderly: A Systematic Review and Meta-Analysis","volume":"34","author":"Richards","year":"2020","journal-title":"J. Orthop. Trauma"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"498","DOI":"10.1080\/17453670710014149","article-title":"Outcome of undisplaced and moderately displaced femoral neck fractures: A prospective study of 466 patients treated by internal fixation","volume":"78","author":"Olav","year":"2007","journal-title":"Acta Orthop."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"183","DOI":"10.1016\/j.injury.2010.08.021","article-title":"Biomechanical analysis of the sliding hip screw, cannulated screws and Targon\u00ae FN in intracapsular hip fractures in cadaver femora","volume":"42","author":"Brandt","year":"2011","journal-title":"Injury"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"41","DOI":"10.1177\/230949901502300110","article-title":"Cannulated versus non-cannulated cancellous screw fixation for femoral neck fractures: A synthetic bone biomechanical study","volume":"23","author":"Gardner","year":"2015","journal-title":"J. Orthop. Surg."},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Schopper, C., Zderic, I., Menze, J., Muller, D., Rocci, M., Knobe, M., Shoda, E., Richards, G., Gueorguiev, B., and Stoffel, K. (2021). Better stability and more predictive fixation of the femoral neck system versus two hansson pins in pauwels ii femoral neck fractures: A biomechanical study. Orthop. Proc., 103.","DOI":"10.1016\/j.jot.2020.06.002"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"S27","DOI":"10.1097\/BOT.0000000000001365","article-title":"Biomechanics of Femoral Neck Fractures and Implications for Fixation","volume":"33","author":"Augat","year":"2019","journal-title":"J. Orthop. Trauma"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"162","DOI":"10.1590\/1413-785220182603182288","article-title":"Biomechanical analysis of femoral neck fracture fixation in synthetic bone","volume":"26","author":"Mansur","year":"2018","journal-title":"Acta Ortop\u00e9dica Bras."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"108658","DOI":"10.1016\/j.biopha.2019.108658","article-title":"Finite element analysis of different internal fixation methods for the treatment of Pauwels type III femoral neck fracture","volume":"112","author":"Tianye","year":"2019","journal-title":"Biomed. Pharm."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1155\/2018\/9619724","article-title":"Optimum Configuration of Cannulated Compression Screws for the Fixation of Unstable Femoral Neck Fractures: Finite Element Analysis Evaluation","volume":"2018","author":"Li","year":"2018","journal-title":"Biomed Res. Int."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"272","DOI":"10.1186\/s13018-018-0970-3","article-title":"Finite element analysis of different configurations of fully threaded cannulated screw in the treatment of unstable femoral neck fractures","volume":"13","author":"Li","year":"2018","journal-title":"J. Orthop. Surg. Res."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"87","DOI":"10.3109\/17453678208992184","article-title":"Osteosynthesis with the Hook-Pin in Slipped Capital Femoral Epiphysis","volume":"53","author":"Hansson","year":"1982","journal-title":"Acta Orthop. Scand."},{"key":"ref_19","first-page":"358","article-title":"Surface-based 3D image registration using the iterative closest-point algorithm with a closest-point transform. Medical Imaging 1996: Image Processing","volume":"2710","author":"Ge","year":"1996","journal-title":"Int. Soc. Opt. Photonics"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"1323","DOI":"10.1016\/j.mri.2012.05.001","article-title":"3D Slicer as an image computing platform for the Quantitative Imaging Network","volume":"30","author":"Fedorov","year":"2012","journal-title":"Magn. Reson. Imaging"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"62","DOI":"10.1109\/TSMC.1979.4310076","article-title":"A threshold selection method from gray-level histograms","volume":"9","author":"Otsu","year":"1979","journal-title":"IEEE Trans. Syst. ManCybern."},{"key":"ref_22","unstructured":"McNeel, R. (2021, April 21). Rhinoceros 3D. Retrieved 15 January 2009. Available online: https:\/\/www.rhino3d.com."},{"key":"ref_23","unstructured":"(2020, March 09). Medixant. RadiAnt DICOM Viewer. Available online: https:\/\/www.radiantviewer.com."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"542","DOI":"10.1080\/17453674.2019.1657261","article-title":"Similar outcome of femoral neck fractures treated with Pinloc or Hansson Pins: 1-year data from a multicenter randomized clinical study on 439 patients","volume":"90","author":"Kalland","year":"2019","journal-title":"Acta Orthop."}],"container-title":["Medicina"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1648-9144\/57\/5\/406\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T05:51:38Z","timestamp":1760161898000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1648-9144\/57\/5\/406"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,4,22]]},"references-count":24,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2021,5]]}},"alternative-id":["medicina57050406"],"URL":"https:\/\/doi.org\/10.3390\/medicina57050406","relation":{},"ISSN":["1648-9144"],"issn-type":[{"type":"electronic","value":"1648-9144"}],"subject":[],"published":{"date-parts":[[2021,4,22]]}}}