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Updated: Mar 6, 2026

Screening of Axonal Degeneration in Carpal Tunnel Syndrome Using Ultrasonography and Nerve Conduction Studies
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Carpal Coalitions on Radiographs: Prevalence and Association With Ordering Indication.

Bastiaan T van Hoorn1, Taylor Pong1, Wouter F van Leeuwen1

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|March 13, 2017
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Summary

Carpal coalitions are common incidental findings on wrist X-rays. This study found they are unlikely to cause wrist pain, even in cases of trauma or nontraumatic pain.

Keywords:
Carpal coalitionspainprevalenceradiograph indicationwrist

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Area of Science:

  • Orthopedics
  • Radiology
  • Anatomy

Background:

  • Carpal coalitions are frequently observed on wrist radiographs.
  • The role of carpal coalitions in causing wrist pain is not well-established.
  • Incidental radiographic findings require careful interpretation in clinical decision-making.

Purpose of the Study:

  • To determine the prevalence of incidental carpal coalitions in wrist radiographs.
  • To investigate the association between demographic factors and carpal coalitions.
  • To assess if the indication for radiography influences the detection of carpal coalitions.

Main Methods:

  • Review of 1,119 posteroanterior wrist radiographs for carpal coalitions.
  • Bivariate and multivariate analyses to identify associations with demographic factors.
  • Comparison of coalition prevalence based on radiography indication: traumatic pain, nontraumatic pain, and other reasons.

Main Results:

  • Carpal coalitions were identified in 8.8% of patients (98/1,119).
  • Prevalence was similar for radiographs taken for traumatic and nontraumatic wrist pain.
  • Patients without wrist pain or trauma showed a lower prevalence of carpal coalitions.

Conclusions:

  • Carpal coalitions are unlikely to be a primary cause of wrist pain.
  • The lower prevalence in non-pain indications may be coincidental.
  • Clinicians should exercise caution when attributing nonspecific wrist pain to incidental carpal coalitions, as these findings typically do not alter patient management.