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Updated: Jul 18, 2026

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Fracture Apparatus Design and Protocol Optimization for Closed-stabilized Fractures in Rodents
Published on: August 14, 2018
How accurate and reliable are doctors in estimating fracture angulation?
J S H Gaskin1, M K Pimple, R Wharton
1Department of Trauma & Orthopaedics, Princess Royal Hospital, Haywards Heath, UK. juju@doctors.org.uk
Injury
|December 5, 2006
Summary
Doctors struggle to accurately estimate fracture angulation, with an average error of 8-9 degrees. Using a goniometer is recommended for precise assessment of wrist and forearm fractures.
Area of Science:
- Orthopaedic Surgery
- Radiology
- Medical Imaging Analysis
Background:
- Accurate assessment of fracture angulation is critical for effective treatment planning in trauma and orthopaedics.
- Visual estimation of fracture angulation by clinicians may be subject to significant error.
- Standardized measurement tools are essential for reliable clinical decision-making.
Purpose of the Study:
- To evaluate the accuracy and variability of visual estimation of fracture angulation by orthopaedic specialists.
- To determine the reliability of doctors in assessing angulation of wrist and forearm fractures without measurement devices.
Main Methods:
- Radiographs of wrist and forearm fractures with diverse angulations were presented to doctors of all grades within trauma and orthopaedics.
- Participants were tasked with visually estimating the degree of angulation at the fracture site.
- Collected estimations were statistically analyzed for accuracy and inter-observer/intra-observer variability.
Main Results:
- Doctors exhibited a mean error of 8-9 degrees in estimating fracture angulation.
- The study revealed poor intra-observer and inter-observer agreement among clinicians.
- Visual estimation proved to be an unreliable method for precise angulation assessment.
Conclusions:
- Visual estimation of fracture angulation by clinicians is inaccurate and inconsistent.
- A significant margin of error exists in subjective assessments of fracture displacement.
- Routine utilization of a goniometer is strongly recommended for accurate measurement of fracture angulation in clinical practice.

