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Ulnar styloid impaction syndrome

S M Topper1, M B Wood, L K Ruby

  • 1Department of Orthopaedic Surgery, University of Colorado Health Science Center, Colorado Springs, USA.

The Journal of Hand Surgery
|July 1, 1997
PubMed
Summary
This summary is machine-generated.

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Excessively long ulnar styloids can cause wrist pain by impacting the triquetrum. Open partial ulnar styloidectomy effectively reduced pain and improved function in patients with this condition.

Area of Science:

  • Orthopedic Surgery
  • Hand and Wrist Surgery
  • Anatomy

Background:

  • Excessive ulnar styloid length can lead to wrist pain and cartilage damage.
  • This condition may arise from injury or occur without a clear precipitating event.

Purpose of the Study:

  • To present a series of patients with symptomatic excessively long ulnar styloids.
  • To describe the diagnosis and surgical management of this condition.
  • To evaluate the clinical outcomes of open partial ulnar styloidectomy.

Main Methods:

  • Retrospective case series of 8 patients.
  • Surgical intervention: open partial ulnar styloidectomy.
  • Outcome assessment: clinical evaluation, patient questionnaires, and radiographs.

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Main Results:

  • Average preoperative ulnar styloid length was 7.4 mm (index 0.41), nearly double normal.
  • Postoperative pain scores significantly decreased from 3.5 to 1.3.
  • All but one patient returned to unrestricted employment.

Conclusions:

  • Open partial ulnar styloidectomy is an effective treatment for pain caused by excessively long ulnar styloids.
  • An elongated ulnar styloid impacts lunatotriquetral kinematics, leading to chondromalacia and synovitis.
  • Diagnosis may involve a new provocative test, and surgical management is detailed.