Evaluation of Distal Forearm Fractures Using the Ao 2018 Classification

Abstract

Objective: Distal forearm fractures are among the most common upper limb fractures in all ages, and many classifications have been proposed to describe them. Recently, a new version of AO/OTA classification was proposed. The aim of this study is to use the AO/OTA 2018 classification to report the epidemiology of distal forearm fractures in adults treated at a single center. Methods: A retrospective analysis of the initial radiographs obtained from cases of distal forearm fractures in an orthopedic emergency room at a single tertiary hospital. Results: Three hundred twenty-two cases were studied, aged 50.35 ± 18.98 years, 55.3% were female and 44.7% were right-sided. Type 2R3A, 2R3B and 2R3C fractures corresponded to 32.3%, 18.0% and 48.4% of the cases, respectively. Distal ulnar fracture was present in 41.9%. There was a correlation between age and sex: 78.3% of the subjects aged under 30 years were male, and 80.6% of those aged over 60 years were female (p<0.001). Conclusion: The most common type of radial fractures was 2R3C, and the most common type of ulna fracture was 2U3A1.1. There was a correlation between age and sex. Level of evidence IV, Case-series.

Epidemiology of Distal Forearm Fracture: A Population-Based Study of 5426 Fractures

“…However, some difference in fracture classifications is present among existing literature. 17 Differences in population demographics, periods, study methods, and included age groups may play a key role. Furthermore, the low interobserver validity of the AO classification may be an important component in the differences observed.…”

“…The distribution of distal forearm fractures according to the AO classification 15 has been investigated by several authors. 3,4,16,17 Extra-articular DRFs AO type A have commonly been reported as the most prevalent fracture type, followed by type C and type B fractures. 3,4 High-energy trauma is reported to increase the risk of type C complex fractures.…”

Epidemiology of distal radius fractures: a detailed survey on a large sample of patients in a suburban area

“…We divided patients into three subcategories according to age: patients aged between 16 and 45 years; patients aged between 46 and 75 years; patients older than 76 years. X-ray imaging, according to standard wrist trauma series consisting of a posteroanterior view, oblique view, and lateral view, was reviewed and DRFs were classified according to the Association of Osteosynthesis (AO)/ OTA 2018 classification system [23] independently by three of the authors. If there was any disagreement, a consensus meeting with the senior author (S.G.) was undertaken.…”

Asociación entre osteoporosis y la clasificación AO de fracturas de radio distal

“…16,17 Según Nogueira y colaboradores, las fracturas de radio distal que más frecuentemente se presentan, conforme a la clasificación AO, son las que tienen un patrón de fractura tipo 2R3C; éstas se asocian en 41.9% con la fractura de cúbito distal; además, tienen un patrón de distribución de casos tipo bimodal, por lo que existe una mayor incidencia en varones jóvenes menores de 30 años y en mujeres mayores de 60 años de edad. 18 Es de esperar que, al existir una alteración de la arquitectura ósea, las fracturas de radio distal deban tener un patrón de fractura más complejo a medida que exista una menor calidad de densidad ósea. Por lo que la microarquitectura del radio distal es importante para tolerar carga; ya que el hueso se comporta como un puente de arco, siendo la placa de hueso subcondral similar a la cubierta lisa del puente que está en contacto con la carga.…”