ArticleOrthopedic reviews2026
Does Cephalomedullary Nail Design Influence Risk of Varus Collapse in Subtrochanteric Femur Fractures?
Article in Orthopedic reviews, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Cephalomedullary nails (CMNs) are frequently utilized for subtrochanteric femur fractures but a lack of cortical fit in proximal fractures may lead to varus deformity. We hypothesize that as the difference between fracture site canal width and diameter of the nail increases so will the risk of varus deformity. Methods: A retrospective study of subtrochanteric femur fractures fixed with CMNs at an academic, level one trauma center over a 6.5-year period was performed. Patients were divided into two cohorts: CMN with sliding blade/screw (TFNA) or greater trochanteric entry recon nail (GTE). The primary outcome analyzed was the correlation between nail-canal mismatch with final neck shaft angle. Secondary outcomes analyzed included rates of nonunion and malunion. Results: Seventy-one patients met the inclusion criteria (35 TFNA and 36 GTE). There was not a significant correlation between the nail-canal mismatch with final neck shaft angle for GTE nails (Pearson correlation coefficient r: -0.187, p=0.274). However, when TFNAs were subdivided into 125° and 130° cohorts, there was a stronger negative correlation for 125° (r: -0.678, p=0.001) compared to the 130° (r: -0.515, p=0.041). For 125° TFNAs, linear regression analysis demonstrated that for every 1 mm increase in nail-canal mismatch there was a decrease in final neck shaft angle by 0.757⁰. There was no difference in secondary outcomes. Conclusion: GTE nails and TFNAs have similar rates of malunion and nonunion when managing subtrochanteric femur fractures. However, 125° TFNAs may be associated with increased varus neck shaft angles as the nail-canal mismatch increases.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.