ArticleBMC musculoskeletal disorders2019
Fifty-six percent of proximal femoral cortical hypertrophies 6 to 10 years after Total hip arthroplasty with a short Cementless curved hip stem - a cause for concern?
Article in BMC musculoskeletal disorders, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
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Who cites it
22 citing papers in PubMed.
- Cortical hypertrophies in cementless short stem total hip arthroplasty in young patients under 60 years and elderly patients over 75 years-analysis of outcome and risk factors for cortical hypertrophies.Archives of orthopaedic and trauma surgery · 2026Article
- Comparative study of fitmore and CLS stems in total hip arthroplasty: midterm clinical and radiographic outcomes.Musculoskeletal surgery · 2025Article
- Progression of cortical hypertrophy, subsidence and thigh pain after short curved fitmore femoral hip stem over 10 years.Journal of orthopaedic surgery and research · 2025Article
- Mid-Term to Long-Term Outcomes of Total Hip Arthroplasty Using a Cementless Trochanteric Sparing Short Stem Through Direct Anterior Approach: A Single-Center Study.Arthroplasty today · 2025Article
- Periprosthetic femoral fractures in minimally-invasive anterolateral short stem versus transgluteal straight stem cementless total hip arthroplasty: What are the differences in the femoral and pelvic morphology?Journal of orthopaedic surgery and research · 2025Article
- Is there a difference in pelvic and femoral morphology in early periprosthetic femoral fracture in cementless short stem total hip arthroplasty via an anterolateral approach?Journal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology · 2024Article
- Factors Influencing Long-term Outcomes After Matrix-Induced Autologous Chondrocyte Implantation: Long-term Results at 10 Years.The American journal of sports medicine · 2024Article
- Cementless short stem total hip arthroplasty in patients older than 75 years: is it feasible?Archives of orthopaedic and trauma surgery · 2024Article
- Finite element analysis of mechanical stress in a cementless tapered-wedge short stem in the varus position.Journal of orthopaedic surgery and research · 2024Article
- The Migration Pattern of a Short-Tapered Femoral Stem Correlates with the Occurrence of Cortical Hypertrophies: A 10-Year Longitudinal Study Using Ein Bild Röntgen Analyse-Femoral Component Analysis.Journal of clinical medicine · 2024Article
- Prospective evaluation of clinical and radiographic 10-year results of Fitmore short-stem total hip arthroplasty.Journal of orthopaedic surgery and research · 2023Article
- A neck-sparing short stem shows significantly lower blood loss in total hip arthroplasty compared to a neck-resecting short stem.Scientific reports · 2023Article
- The 'critical trochanter angle' does not show superiority over the CCD angle in predicting varus stem alignment in cementless short-stem total hip arthroplasty.Archives of orthopaedic and trauma surgery · 2023Article
- High varus stem alignment in short-stem total hip arthroplasty: a risk for reconstruction of femoro-acetabular offset, leg length discrepancy and stem undersizing?Archives of orthopaedic and trauma surgery · 2022Article
- Minimally invasive anterolateral approach versus direct anterior approach total hip arthroplasty in the supine position: a prospective study based on early postoperative outcomes.Journal of orthopaedic surgery and research · 2022Article
- Do radiological findings around the Fitmore stem change over time? : radiolucency around the short hip stem disappears within a few years: a retrospective study.Bone & joint open · 2022Article
- The morphology of the proximal femur in cementless short-stem total hip arthroplasty: No negative effect on offset reconstruction, leg length difference and implant positioning.Journal of orthopaedic surgery and research · 2021Article
- Biomechanics of a calcar loading and a shortened tapered femoral stem: Comparative in-vitro testing of primary stability and strain distribution.Journal of experimental orthopaedics · 2021Article
- Low rate of early periprosthetic fractures in cementless short-stem total hip arthroplasty using a minimally invasive anterolateral approach.Journal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology · 2021Article
- Does increased diameter of metal femoral head associated with highly cross-linked polyethylene augment stress on the femoral stem and cortical hypertrophy?International orthopaedics · 2021Article
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Authors and funding
8 authors.
Funding
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Abstract
backgroundThigh pain and cortical hypertrophies (CH) have been reported in the short term for specific short hip stem designs. The purpose of the study was to investigate 1) the differences in clinical outcome, thigh pain and stem survival for patients with and without CHs and 2) to identify patient and surgery-related factors being associated with the development of CHs.
methodsA consecutive series of 233 patients with 246 hips was included in the present retrospective diagnostic cohort study, who had received a total hip arthroplasty (THA) between December 2007 and 2009 with a cementless, curved, short hip stem (Fitmore, Zimmer, Warsaw, IN, USA). Clinical and radiographic follow-up, including the radiographic parameters for hip geometry reconstruction, were prospectively assessed 1, 3, and 6 to 10 years after surgery.
resultsCortical hypertrophies were observed in 56% of the hips after a mean of 7.7 years, compared to 53% after 3.3 years being mostly located in Gruen zone 3 and 5. There was no significant difference for the Harris Hip Score and UCLA score for patients with and without CHs. Only one patient with a mild CH in Gruen zone 5 and extensive heterotopic ossifications around the neck of the stem reported thigh pain. The Kaplan Meier survival rate after 8.6 years was 99.6% (95%-CI; 97.1-99.9%) for stem revision due to aseptic loosening and no association with CHs could be detected. Postoperative increase in hip offset was the only risk factor being associated with the development of CHs in the regression model (ΔHO; OR 1.1 (1.0-1.2); p = 0.001).
conclusionsThe percentage of cortical hypertrophies remained almost constant in the mid-term compared to the short-term with the present cementless short hip stem design. The high percentage of cortical hypertrophies seems not be a cause for concern with this specific implant in the mid-term. LEVEL OF EVIDENCE: Diagnostic Level IV.
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