Trial reportInternational orthopaedics2026
Gamma 3 vs Gamma 3 RC in Unstable Extracapsular Hip Fractures: A Prospective Randomized study.
Trial report in International orthopaedics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- Letter to the Editor on "Gamma 3 vs Gamma 3 RC in Unstable Extracapsular Hip Fractures: a prospective randomized study".International orthopaedics · 2026Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeRotational instability is a key factor in fixation failure of extracapsular hip fractures. The U-Blade (RC) lag screw was designed to improve rotational stability. This study aimed to compare mechanical complication rates between Gamma3 and Gamma3 RC nails in elderly patients with rotationally unstable extracapsular fractures.
methodsWe conducted a prospective, single-center randomized controlled trial including 316 patients aged ≥ 65 years with rotationally unstable extracapsular fractures. Patients were randomized to treatment with a Gamma3 nail (n = 169) or a Gamma3 RC nail (n = 147). Mechanical complications were classified as major (rotation and migration of the implant, cut-out, non-union) or minor (back-out, cervicodiaphyseal angle change, excessive sliding).
resultsThe overall rate of major complications was 2.9 per 10,000 person-days, being the most frequent the cut out (2.2%), with no significant difference between Gamma3 and Gamma3 RC groups (RR = 1.0; 95% CI: 0.4-2.7). TAD > 25 mm increased the risk of major complications (RT = 3.7; 95% CI: 1.2-11.2), as did superior screw placement (Cleveland zones 1-3: RT = 7.5; 95% CI: 2.7-20.8) and postoperative diastasis (RT = 4.7; 95% CI: 1.4-16.2). Similarly, implant type was not significantly associated with minor complications that were observed in 85 patients (26.9%), most frequently back-out (14.6%).
conclusionThe U-Blade (RC) lag screw did not reduce mechanical complication rates compared with the standard Gamma3. Radiographic parameters, particularly TAD, reduction quality, screw position, and postoperative diastasis, were the main predictors of fixation failure.
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