Three-year migration analysis of a new metaphyseal anchoring short femoral stem in THA using EBRA-FCA
Abstract Cementless calcar-guided femoral short stems in total hip arthroplasty (THA) have become increasingly popular over the years. Early distal migration of femoral stems measured by Einzel-Bild-Roentgen Analyse, Femoral Component Analyse (EBRA-FCA) has been reported to be a risk factor for asep...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2022-10-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-22160-w |
| _version_ | 1798029891818487808 |
|---|---|
| author | Patrick Reinbacher Maria Anna Smolle Joerg Friesenbichler Alexander Draschl Andreas Leithner Werner Maurer-Ertl |
| author_facet | Patrick Reinbacher Maria Anna Smolle Joerg Friesenbichler Alexander Draschl Andreas Leithner Werner Maurer-Ertl |
| author_sort | Patrick Reinbacher |
| collection | DOAJ |
| description | Abstract Cementless calcar-guided femoral short stems in total hip arthroplasty (THA) have become increasingly popular over the years. Early distal migration of femoral stems measured by Einzel-Bild-Roentgen Analyse, Femoral Component Analyse (EBRA-FCA) has been reported to be a risk factor for aseptic loosening. The aim of this study was to analyse axial migration behavior and subsidence of a new short stem (launched in 2015) over a follow-up period of 3 years. According to the study protocol, 100 hip osteoarthritis patients who consecutively received an unilateral cementless calcar-guided short stem (ANA.NOVA proxy) at a single department were prospectively included in this mid-term follow-up study. Thirteen patients were lost to follow-up, resulting in 87 patients with unilateral THA who fulfilled the criteria for migration analysis with EBRA-FCA. The cohort comprised 41 males (mean age: 60 ± 16.5; mean BMI (Body Mass Index): 30 ± 13) and 46 females (mean age: 61 ± 15.5; mean BMI: 27 ± 10). Seven standardized radiographs per patient were analyzed with EBRA-FCA. An average migration of 2.0 mm (0.95–3.35) was observed within the first 3 years. The median increase during the first year was higher than in the second and third year (1.2 mm [IQR: 0.5–2.15] vs. 0.3 mm [IQR: 0.1–0.6 mm] vs. 0.25 mm [IQR: 0.1–0.5 mm]. Detected migration did not lead to stem loosening, instability, dislocation, or revision surgery in any patient. A higher risk for subsidence was observed in male and heavyweight patients, whereas the female gender was associated with a lower risk. No correlation between migration and revision could be observed. Although moderate subsidence was detectable, the performance of the short stem ANA.NOVA proxy is encouraging. Yet, its use may be re-considered in overweight and male patients due to more pronounced subsidence. |
| first_indexed | 2024-04-11T19:32:33Z |
| format | Article |
| id | doaj.art-0295e785f0b6464da1bd8d63ec62c09b |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-11T19:32:33Z |
| publishDate | 2022-10-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-0295e785f0b6464da1bd8d63ec62c09b2022-12-22T04:06:57ZengNature PortfolioScientific Reports2045-23222022-10-0112111010.1038/s41598-022-22160-wThree-year migration analysis of a new metaphyseal anchoring short femoral stem in THA using EBRA-FCAPatrick Reinbacher0Maria Anna Smolle1Joerg Friesenbichler2Alexander Draschl3Andreas Leithner4Werner Maurer-Ertl5Department of Orthopaedics and Trauma, Medical University of GrazDepartment of Orthopaedics and Trauma, Medical University of GrazDepartment of Orthopaedics and Trauma, Medical University of GrazDepartment of Orthopaedics and Trauma, Medical University of GrazDepartment of Orthopaedics and Trauma, Medical University of GrazDepartment of Orthopaedics and Trauma, Medical University of GrazAbstract Cementless calcar-guided femoral short stems in total hip arthroplasty (THA) have become increasingly popular over the years. Early distal migration of femoral stems measured by Einzel-Bild-Roentgen Analyse, Femoral Component Analyse (EBRA-FCA) has been reported to be a risk factor for aseptic loosening. The aim of this study was to analyse axial migration behavior and subsidence of a new short stem (launched in 2015) over a follow-up period of 3 years. According to the study protocol, 100 hip osteoarthritis patients who consecutively received an unilateral cementless calcar-guided short stem (ANA.NOVA proxy) at a single department were prospectively included in this mid-term follow-up study. Thirteen patients were lost to follow-up, resulting in 87 patients with unilateral THA who fulfilled the criteria for migration analysis with EBRA-FCA. The cohort comprised 41 males (mean age: 60 ± 16.5; mean BMI (Body Mass Index): 30 ± 13) and 46 females (mean age: 61 ± 15.5; mean BMI: 27 ± 10). Seven standardized radiographs per patient were analyzed with EBRA-FCA. An average migration of 2.0 mm (0.95–3.35) was observed within the first 3 years. The median increase during the first year was higher than in the second and third year (1.2 mm [IQR: 0.5–2.15] vs. 0.3 mm [IQR: 0.1–0.6 mm] vs. 0.25 mm [IQR: 0.1–0.5 mm]. Detected migration did not lead to stem loosening, instability, dislocation, or revision surgery in any patient. A higher risk for subsidence was observed in male and heavyweight patients, whereas the female gender was associated with a lower risk. No correlation between migration and revision could be observed. Although moderate subsidence was detectable, the performance of the short stem ANA.NOVA proxy is encouraging. Yet, its use may be re-considered in overweight and male patients due to more pronounced subsidence.https://doi.org/10.1038/s41598-022-22160-w |
| spellingShingle | Patrick Reinbacher Maria Anna Smolle Joerg Friesenbichler Alexander Draschl Andreas Leithner Werner Maurer-Ertl Three-year migration analysis of a new metaphyseal anchoring short femoral stem in THA using EBRA-FCA Scientific Reports |
| title | Three-year migration analysis of a new metaphyseal anchoring short femoral stem in THA using EBRA-FCA |
| title_full | Three-year migration analysis of a new metaphyseal anchoring short femoral stem in THA using EBRA-FCA |
| title_fullStr | Three-year migration analysis of a new metaphyseal anchoring short femoral stem in THA using EBRA-FCA |
| title_full_unstemmed | Three-year migration analysis of a new metaphyseal anchoring short femoral stem in THA using EBRA-FCA |
| title_short | Three-year migration analysis of a new metaphyseal anchoring short femoral stem in THA using EBRA-FCA |
| title_sort | three year migration analysis of a new metaphyseal anchoring short femoral stem in tha using ebra fca |
| url | https://doi.org/10.1038/s41598-022-22160-w |
| work_keys_str_mv | AT patrickreinbacher threeyearmigrationanalysisofanewmetaphysealanchoringshortfemoralsteminthausingebrafca AT mariaannasmolle threeyearmigrationanalysisofanewmetaphysealanchoringshortfemoralsteminthausingebrafca AT joergfriesenbichler threeyearmigrationanalysisofanewmetaphysealanchoringshortfemoralsteminthausingebrafca AT alexanderdraschl threeyearmigrationanalysisofanewmetaphysealanchoringshortfemoralsteminthausingebrafca AT andreasleithner threeyearmigrationanalysisofanewmetaphysealanchoringshortfemoralsteminthausingebrafca AT wernermaurerertl threeyearmigrationanalysisofanewmetaphysealanchoringshortfemoralsteminthausingebrafca |