Mid-term results of a new femoral prosthesis using Ti-Nb-Sn alloy with low Young's modulus.
Background: This study was performed to investigate the mid-term results of Ti-Nb-Sn (TNS) alloy stem with a low Young's modulus.Methods: This study was a multicenter prospective cohort study. A total of 40 primary total hip arthroplasties performed between April 2016 and September 2017 was enrolled...
| Publicado en: | BMC Musculoskeletal Disorders Vol. 22; no. 1; pp. 1 - 10 |
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| Autores principales: | , , , , , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
BioMed Central
11/26/2021
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=153818261&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 153818261 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 14712474 1CI5 jtl: BMC Musculoskeletal Disorders issn: 14712474 maglogo: N pubinfo: dt: 11/26/2021 vid: 22 iid: 1 pid: 24147 pub: BioMed Central artinfo: ui: 153818261 153818261 NLM34836525 153818261 10.1186/s12891-021-04879-1 NLM34836525 153818261 ppf: 1 ppct: 9 formats: tig: atl: Mid-term results of a new femoral prosthesis using Ti-Nb-Sn alloy with low Young's modulus. aug: au: Chiba, Daisuke Yamada, Norikazu Mori, Yu Oyama, Masamizu Ohtsu, Susumu Kuwahara, Yoshiyuki Baba, Kazuyoshi Tanaka, Hidetatsu Aizawa, Toshimi Hanada, Shuji Itoi, Eiji affil: Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, 980-8574, Sendai, Miyagi, Japan sug: subj: Limb Prosthesis Joint Prosthesis Arthroplasty, Replacement, Hip Adverse Effects Prospective Studies Alloys Human Female Elasticity Male Prosthesis Design Titanium Comparative Studies Multicenter Studies Evaluation Research Validation Studies Clinical Assessment Tools Scales Female Male ab: Background: This study was performed to investigate the mid-term results of Ti-Nb-Sn (TNS) alloy stem with a low Young's modulus.Methods: This study was a multicenter prospective cohort study. A total of 40 primary total hip arthroplasties performed between April 2016 and September 2017 was enrolled in this study. With the unique functional gradient properties by heating treatment, the strength of the proximal portion was enhanced, while the distal portion maintained a low Young's modulus. The surgeries were performed through the posterolateral approach using the TNS alloy stems. Radiographs were taken from immediately after surgeries until 3 years, and stress shielding and subsidence of the stems were evaluated. The incidences of the stem breakage were also assessed. Clinical assessments were performed using Japanese Orthopaedic Association (JOA) and Japanese Orthopaedic Association Hip Disease Evaluation Questionnaire (JHEQ) scores.Results: Among the 40 enrolled patients, 36 patients were female and 4 were male. At 3 years after surgery, there were no radiologic signs of loosening, subsidence, or breakage of the stem. Stress shielding was observed in 26 hips (65%). Of 26 hips, 16 hips (40%) were grade 1 and 10 hips (25%) were grade 2. There was no advanced stress shielding. The JOA and JHEQ scores significantly improved compared with the preoperative scores.Conclusion: The current study using a new TNS alloy femoral stem showed good clinical outcomes at 3-year follow-up. Radiologically, there was no loosening or subsidence of the stem. The mild stress shielding was observed in 65% of patients.Trial Registration: Current Controlled Trials ISRCTN21241251 . The date of registration was October 26, 2021. Retrospectively registered. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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