ArticleMusculoskeletal surgery2025
Comparative study of fitmore and CLS stems in total hip arthroplasty: midterm clinical and radiographic outcomes.
Article in Musculoskeletal surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeShort-stem implants offer several advantages, including the preservation of bone stock and a physiological load transfer in the subtrochanteric area. The aim of this study was to compare the radiological and functional outcomes of short stem and traditional stem during midterm follow-up. MATERIALS AND
methodsWe conducted a retrospective analysis of a consecutive series of 50 patients with Fitmore and CLS stems. Clinical assessment was performed by Harris hip score; additionally, thigh pain was assessed at six months, one year, and the latest follow-up. The following radiological parameters were evaluated: stem alignment, presence of radiolucent lines and osteolysis around the stem, stem subsidence, cortical hypertrophy, femoral stress-shielding, pedestal formation at the tip of the stem, calcar resorption, heterotopic ossification, and implant loosening.
resultsThe mean follow-up duration was 8.4 ± 2.1 years in the CLS group and 7.6 ± 2.2 years in the Fitmore group. The mean HHS improved from 43.0 ± 3.3 to 93.2 ± 2.5 for the CLS group and from 43.2 ± 4.4 to 93.6 ± 3.2 for the Fitmore group, without any statistical differences between the two groups. Thigh pain disappeared in all patients in the Fitmore group, while it persisted in 8% of the patients in the CLS group. There was a significant difference in the level of cortical hypertrophy between the two groups, with 28% in the Fitmore group compared to 12% in the CLS group. No statistically significant difference was observed for other radiological parameters.
conclusionsBoth short stems and standard stems demonstrated stable fixation and satisfactory clinical and radiological outcomes.
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