Stem torsion in total hip replacement.
Background and purpose The clinical results of THR may be improved by correct femoral torsion. We evaluated the stem position by postoperative CT examination in 60 patients. Methods 60 patients requiring total hip arthroplasty were prospectively enrolled in this study. Minimally invasive THR was per...
| Publicado en: | Acta Orthopaedica Vol. 81; no. 5; pp. 579 - 583 |
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| Autores principales: | , , , , , |
| Formato: | pictorial research tables/charts Journal Article |
| Publicado: |
Medical Journals Sweden AB
Oct2010
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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=54301192&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 54301192 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 17453674 1BVL jtl: Acta Orthopaedica issn: 17453674 maglogo: N pubinfo: dt: Oct2010 vid: 81 iid: 5 pid: 59195 pub: Medical Journals Sweden AB artinfo: ui: 54301192 104928091 104928091 10.3109/17453674.2010.524596 54301192 ppf: 579 ppct: 4 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Stem torsion in total hip replacement. aug: au: Sendtner, Ernst Tibor, Schuster Winkler, Roman Wörner, Michael Grifka, Joachim Renkawitz, Tobias affil: Department of Orthopedic Surgery, Regensburg University Medical Center, Regensburg sug: subj: Arthroplasty, Replacement, Hip Methods Torsion Abnormality Prevention and Control Human Male Female Osteoarthritis, Hip Surgery Middle Age Aged Aged, 80 and Over Confidence Intervals Pelvis Radiography Descriptive Statistics Sex Factors Prospective Studies Unpaired T-Tests Data Analysis Software Intraclass Correlation Coefficient Middle Aged: 45-64 years Aged: 65+ years Aged, 80 & over Male Female ab: Background and purpose The clinical results of THR may be improved by correct femoral torsion. We evaluated the stem position by postoperative CT examination in 60 patients. Methods 60 patients requiring total hip arthroplasty were prospectively enrolled in this study. Minimally invasive THR was performed (anterior approach) in a lateral decubitus position and each patient underwent a postoperative CT examination. The position of the stem was evaluated by an independent external institution. Results Stem torsion ranged from -19° retrotorsion to 33° antetorsion. Normal antetorsion (i.e 10-15° according to Tönnis) was present in 5 of 60 patients, so the prevalence of abnormal stem antetorsion was 92% (95% CI: 82-97). We found a stem antetorsion outside the range of 0-25° in 21 of 60 hips. Women had a higher mean stem antetorsion (8.0° (SD 11)) than men (1.5° (SD 10)). Interpretation Postoperative stem antetorsion shows a high variability and is gender-related. We suggest precise assessment of stem antetorsion intraoperatively by means of computer navigation, preparing the femur first. In abnormal stem antetorsion, the cup position can be adjusted using a combined anteversion concept; alternatively, modular femoral components or stems with retroverted or anteverted necks ('retrostem') could be used. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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