A radiographic study of dorsovolar wrist axes and a database of angular measurements on axial computed tomography images
1Department of Orthopedics and Traumatology, Division of Hand Surgery, Mersin City Training and Research Hospital, Mersin, Türkiye
2Department of Orthopedics and Traumatology, Division of Hand Surgery, Adana City Training and Research Hospital, Adana, Türkiye
3Department of Orthopedics and Traumatology, Adana City Training and Research Hospital, Adana, Türkiye
Keywords: Angle measurement, axis, carpal, computed tomography, distal radius, scapholunate, sigmoid notch.
Objectives: This study aims to identify the most accurate dorsovolar principal axis of the distal radius and carpus identified on axial computed tomography (CT) sections and to establish normative data for angular measurements among these axes.
Patients and methods: Between December 2019 and December 2021, normal axial CT images of wrists of a total of 42 individuals (25 males, 17 females; mean age: 31±8.4 years; range, 18 to 45 years) were retrospectively analyzed. Eight axes were identified on axial CT images: four distal radial axes (the volar cortical, medial cortical, central, and sigmoid notch axes) and four carpal axes (the scapholunate, lunotriquetral, capitohamate, and pisotrapezial axes). Twenty-two angular parameters were measured with reference to four principal axes (the volar cortical, medial cortical, central, and pisotrapezial axes).
Results: The mean sigmoid notch rotation (version) angles relative to the four principal axes were 8±5° (range, –2° to 18°), 6±5° (range, –2° to 13°), 1±5° (range, –8° to 14°), and 4±4° (range, –3° to 15°), respectively. The mean scapholunate rotation angles were –13±5° (range, –27° to –6°), –15±6° (range, –29° to –8°), –21±5° (range, –30° to –11°), and –8±5° (range, –28° to –6°), respectively. Among four principal axes, the volar cortical and medial cortical axes were nearly collinear with both of relatively fixed carpal axes. The four principal axes showed angular differences between 2° and 8° with each other. There was no significant difference between men and women for all measurements.
Conclusion: The axial CT sections can be used to describe the various angulations between the normal wrist axes such as the sigmoid notch and scapholunate joint rotation angles. Despite slight differences among the four principal axes, the volar cortical and medial cortical axes are more consistent with the relatively fixed carpal axes.
Citation: Arık A, Hatipoğlu MY, Özcanyüz B, Bulut M, Seyfettinoğlu F. A radiographic study of dorsovolar wrist axes and a database of angular measurements on axial computed tomography images. Jt Dis Relat Surg 2023;34(1):176-182. doi: 10.52312/jdrs.2023.872
The study protocol was approved by the Ethical Committee for Clinical Research, Adana City Training and Research Hospital (date: 30.05.2022, no: 1954). The study was conducted in accordance with the principles of the Declaration of Helsinki.
A written informed consent was obtained from each patient.
Data Sharing Statement:
The data that support the findings of this study are available from the corresponding author upon reasonable request.
Idea/concept: A.A., M.Y.H.; Design: A.A., M.Y.H.; Control/supervision: F.S.; Data collection and/or processing: B.Ö., M.Y.H.; Analysis and/or interpretation: A.A., B.Ö.; Literature review: A.A., M.Y.H.; Writing the article: A.A.; Critical review: F.S.; Materials: B.Ö., M.Y.H; Gaining ethical approval: M.B., F.S.
The authors declared no conflicts of interest with respect to the authorship and/or publication of this article.
The authors received no financial support for the research and/or authorship of this article.