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Completed

NCT Number: NCT07039695

Union Rate of Scaphoid Non-Union Fracture in Adults by Herbert Screw Versus Volar Buttress Plate

This study aimed to evaluate the short-term results of treating non-united scaphoid waist fractures with a humpback deformity by graft and internal fixation using a volar buttress plate versus the use of a Herbert screw.

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Key information

Conditions

Union Fractures, Bone Fractures, Ununited Herbert Screw Non-Union Fracture Scaphoid Volar Buttress Plate Wounds and Injuries

Age range

20 year–50 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Helwan University

Helwan, Cairo Governorate, 11795, Egypt

About this study

Scaphoid fracture is the most common fracture, accounting for roughly 60% of the total carpal bone fractures and 11 % of all hand fractures.

Nonunion occurs in approximately 5% to 25 % of scaphoid fractures. The scaphoid nonunion will collapse into a humpback deformity, and the lunate, together with the proximal pole, into a dorsal intercalated segment instability, which might end in an advanced carpal collapse.

A scaphoid screw acts to prevent bending at the fracture site with three-point fixation within the cancellous bone of the scaphoid. The proximal and distal points of purchase are achieved by the capture of the screw threads in the cancellous bone of the proximal and distal poles of the scaphoid. The third point occurs within the cancellous bone of the scaphoid waist.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age of a patient is between 20 years to 50 years.
  • Non-union or delayed union scaphoid wrist fracture (more than 3 months).
  • Closed fracture.
  • Patients without previous scaphoid surgery.
  • Patients without abnormal renal and/or liver functions.
  • Patients without hypocalcemia and/or vitamin D3 deficiency.

Exclusion criteria

  • Open fracture.
  • Patients with proximal or distal fracture of the scaphoid.
  • Patients with avascular necrosis of scaphoid.
  • Patients with mid-carpal arthritis or pan-carpal arthritis.
  • Patients with carpal instability.

Treatment and study plan

Volar buttress plate

Procedure

Patients will be treated by a volar buttress plate.

Herbert screw

Procedure

Patients will be treated by Herbert screw.

Primary outcomes

  1. Mayo Wrist Score

    Time frame: 3 months post-procedure

    The Mayo Wrist Score is a fast and simple tool comprising four questions that assess pain intensity, wrist function, range of motion, and grip strength. Mayo Wrist Score ranges from 0 to 100. Scores of 90-100 are considered excellent, 80-90 good, 60-80 satisfactory, and below 60 poor.

Secondary outcomes

  1. Disabilities of the Arm, Shoulder and Hand (DASH) score

    Time frame: 3 months post-procedure

    The Disabilities of the Arm, Shoulder and Hand (DASH) is a 30-item patient-reported outcome measure utilized to assess symptoms and function of the entire upper extremity. The score is calculated on a scale score ranging from 0 (no disability) to 100 (most severe disability).

Sponsors and collaborators

Lead sponsor

Helwan University

Other

Registry information

Official study title

Evaluation of Union Rate of Scaphoid Non-Union Fracture in Adults by Herbert Screw Versus Volar Buttress Plate

Important dates

Study start
2020
Primary completion
2022
Study completion
2022
First posted
Jun 26, 2025
Registry last updated
Jun 26, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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