S Demehri1, N Hafezi-Nejad2, U Thakur2, J N Morelli2, S D Lifchez3, K R Means4, J T Shores3. 1. Russell H. Morgan Department of Radiology, Johns Hopkins University, Baltimore, MD, USA. Electronic address: demehri2001@yahoo.com. 2. Russell H. Morgan Department of Radiology, Johns Hopkins University, Baltimore, MD, USA. 3. Department of Plastic and Reconstructive Surgery, Johns Hopkins University, Baltimore, MD, USA. 4. The Curtis National Hand Center at MedStar Union Memorial Hospital, Baltimore, MD, USA.
Abstract
AIM: To characterise the normal motion pattern of the pisotriquetral (PT) joint during wrist extension and flexion, as well as observer performance of measurements using four-dimensional (4D)-computed tomography (CT) acquisitions and double-oblique multiplanar reconstruction (MPR) technique in asymptomatic contralateral joints of patients with unilateral wrist pain. MATERIALS AND METHODS: In this Health Insurance Portability and Accountability Act (HIPAA)-compliant institutional review board-approved study, 4D-CT was performed on the asymptomatic contralateral wrists of 10 patients (mean age: 46 years; M/F: 6/4) for comparison to the symptomatic side. Two independent observers defined the "oblique-sagittal" plane for PT joint measurements. Measurements were obtained for the anteroposterior (AP) interval and craniocaudal (CC) excursion during the extension-flexion arc of wrist motion. RESULTS: The median (interquartile range) of the AP interval was 0.65 mm (0.55-1 mm) in extension, 1.1 mm (0.8-1.82 mm) in the neutral position, and 4.65 mm (2.07-5.87 mm) in flexion. Likewise, the median of the CC excursions in asymptomatic wrists were 0 mm in extension, 0.27 mm (0-0.37 mm) in the neutral position, and 0.28 mm (0.18-0.31 mm) in flexion. The AP interval measurements obtained at wrist flexion were larger than measurements obtained at wrist extension. There was a strong consistency in AP interval difference measurements between the two observers (ICC=0.80; p<0.01); however, CC excursion difference measurements did not reach the significance threshold between the two observers (ICC=0.40; p=0.11). CONCLUSION: PT joint kinematics in asymptomatic wrists demonstrates an increase in AP interval and CC excursion during wrist flexion. MPR techniques provide good interobserver agreements for AP interval measurements. The reported intervals for asymptomatic joints can be used as a reference for asymptomatic wrists.
AIM: To characterise the normal motion pattern of the pisotriquetral (PT) joint during wrist extension and flexion, as well as observer performance of measurements using four-dimensional (4D)-computed tomography (CT) acquisitions and double-oblique multiplanar reconstruction (MPR) technique in asymptomatic contralateral joints of patients with unilateral wrist pain. MATERIALS AND METHODS: In this Health Insurance Portability and Accountability Act (HIPAA)-compliant institutional review board-approved study, 4D-CT was performed on the asymptomatic contralateral wrists of 10 patients (mean age: 46 years; M/F: 6/4) for comparison to the symptomatic side. Two independent observers defined the "oblique-sagittal" plane for PT joint measurements. Measurements were obtained for the anteroposterior (AP) interval and craniocaudal (CC) excursion during the extension-flexion arc of wrist motion. RESULTS: The median (interquartile range) of the AP interval was 0.65 mm (0.55-1 mm) in extension, 1.1 mm (0.8-1.82 mm) in the neutral position, and 4.65 mm (2.07-5.87 mm) in flexion. Likewise, the median of the CC excursions in asymptomatic wrists were 0 mm in extension, 0.27 mm (0-0.37 mm) in the neutral position, and 0.28 mm (0.18-0.31 mm) in flexion. The AP interval measurements obtained at wrist flexion were larger than measurements obtained at wrist extension. There was a strong consistency in AP interval difference measurements between the two observers (ICC=0.80; p<0.01); however, CC excursion difference measurements did not reach the significance threshold between the two observers (ICC=0.40; p=0.11). CONCLUSION: PT joint kinematics in asymptomatic wrists demonstrates an increase in AP interval and CC excursion during wrist flexion. MPR techniques provide good interobserver agreements for AP interval measurements. The reported intervals for asymptomatic joints can be used as a reference for asymptomatic wrists.
Authors: Shadpour Demehri; Nima Hafezi-Nejad; John N Morelli; Uma Thakur; Scott D Lifchez; Kenneth R Means; John Eng; Jaimie T Shores Journal: Skeletal Radiol Date: 2015-12-14 Impact factor: 2.199
Authors: Luca Buzzatti; Benyameen Keelson; Jildert Apperloo; Thierry Scheerlinck; Jean-Pierre Baeyens; Gert Van Gompel; Jef Vandemeulebroucke; Michel de Maeseneer; Johan de Mey; Nico Buls; Erik Cattrysse Journal: Sci Rep Date: 2019-02-04 Impact factor: 4.379