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Wrist angle measurements in predicting the presence of a displaced scaphoid fracture

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European Journal of Orthopaedic Surgery & Traumatology Aims and scope Submit manuscript

Abstract

Purpose

Early diagnosis and treatment of scaphoid fractures is critical to achieve union and prevent wrist degenerative arthritis. Plain radiographic measurements can guide the early approach to suspected fractures. Specifically, the ability to predict fracture or fracture stability from plain radiographs may allow the traumatologist to expand initial referral to three-dimensional imaging. We evaluated the ability of four measured angles to predict presence of a scaphoid fracture and stability.

Methods

Fifty patients with a scaphoid fracture and 50 patients without fracture were evaluated for the cortical ring sign, scapho-lunate gapping, lateral scapholunate (SL), radio-scaphoid (RS), radio-lunate (RL), and radio-capitate (RC) angles by two-blinded observers.

Results

Measurement of an increased SL interval was associated with the presence of a scaphoid fracture as diagnosed on three-dimensional imaging [odds ratio (OR) 3.0, confidence interval (CI) 1.53–5.87, p =  < 0.01]. The measured RL angle was associated with fracture displacement (OR 1.13, 95% CI 1.02–1.25, p = 0.02).

Conclusions

Scapholunate gapping on plain radiographs in the context of a clinically suspected scaphoid fracture should increase suspicion for a fracture and may prompt earlier 3-dimensional imaging, while the presence of an abnormal radiolunate angle should increase wariness for instability and can be used in preoperative planning.

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Authors and Affiliations

  1. School of Medicine, New York University, 1999 Marcus Ave., New Hyde Park, NY, 11042, USA

    Jacob Becker, Shengnan Huang, Catherine Petchprapa & Ronit Wollstein

  2. Hadassah Medical Center, Jerusalem, Israel

    Shai Luria

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  1. Jacob Becker
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  2. Shai Luria
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Correspondence to Ronit Wollstein.

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Becker, J., Luria, S., Huang, S. et al. Wrist angle measurements in predicting the presence of a displaced scaphoid fracture. Eur J Orthop Surg Traumatol 33, 2271–2276 (2023). https://doi.org/10.1007/s00590-022-03418-5

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  • DOI: https://doi.org/10.1007/s00590-022-03418-5

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