Pronated Grip View With Wrist Deviation: A Pilot Study on the Effect on Ulnocarpal Relationships

Overview

Journal Hand (N Y)

Publisher Sage Publications

Specialties General Surgery
Orthopedics

Date 2021 Jul 14

PMID 34259079

Citations 1

Authors

Anthony L Logli

Beth A Schueler

Laurel A Littrell

Sanjeev Kakar

Affiliations

Soon will be listed here.

Abstract

Background: We hypothesize that different positions of the wrist in the coronal plane makes the carpus susceptible to ulnar impaction.

Methods: We prospectively enrolled 10 adult volunteers and obtained fluoroscopic images of each wrist in 12 different positions using a standardized protocol. Distances from the ulna to the lunate (UL) and ulna to the triquetrum (UT) were digitally measured as was the portion of the lunate surface area that was uncovered (LUR) with wrist deviation.

Results: A wrist position of Pronation, Neutral Deviation, and Grip (P-ND-G) significantly shortened the ulnocarpal distance when compared to a position of Neutral Rotation, Neutral Deviation, and No Grip (NR-ND-NG). Radial deviation during pronation and gripping (Pronated, Radial Deviation, Gripping [P-RD-G]) resulted in the lowest mean UL distance (1.2 mm). UT distance was minimized by a position of ulnar deviation during a pronated grip (Pronated, Ulnar Deviation, Gripping [P-UD-G]) (3.1 mm). The lunate becomes more uncovered with radial deviation.

Conclusion: Radial deviation minimizes the UL distance while ulnar deviation minimizes the UT distance during a wrist position of pronation and gripping. Further, there is more proximal lunate surface area uncoverage during all positions of radial deviation compared to ulnar deviation.

Citing Articles

Bilateral lunotriquetral coalition: a dynamic four-dimensional computed tomography technical case report.

Foley R, Trentadue T, Lopez C, Weber N, Thoreson A, Holmes 3rd D Skeletal Radiol. 2023; 53(7):1423-1430.

PMID: 37943305 PMC: 11078889. DOI: 10.1007/s00256-023-04490-6.

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