Background: Peripheral nerves are mobile structures, stretching and translating in response to changes the position of adjuvant anatomic structures. The objective this study was develop a novel method characterize relative motion deformation median nerve on cross-sectional ultrasound images carpal tunnel during active finger motion. Methods: Fifteen volunteers without history syndrome or wrist trauma were recruited. An scanner linear array transducer used evaluate flexor tendons within from...

This study investigated the effects of a series four hypertonic dextrose injections on subsynovial connective tissue (SSCT) and median nerve within carpal tunnel rabbit model.Twenty New Zealand white rabbits were used. One forepaw was randomly injected with 0.1 ml 10 % solution. The contralateral similar amount saline. injection made once per week for 4 weeks. animals killed at 16 weeks after initial evaluated by electrophysiology (EP), SSCT mechanical testing, histology.Mechanical testing...

Objectives: This study aims to define three-dimensional (3D) parameters for the inclination of distal radius joint surface. The goal is develop standardized fracture reduction through comprehensive 3D evaluations surfaces. Methods: We analyzed 112 CT scans unaffected wrists (56 males and 56 females) construct models radius. Using coordinates, normal vectors angles were calculated based on three reference points These vector components then converted into unit A, B, C x, y, z axes,...

Abstract The purpose of this study was to measure the effect wrist position on relative motion middle finger flexor digitorum superficialis (FDS) tendon, subsynovial connective tissue (SSCT), median nerve, and retinaculum during simulated active motion. each measured by fluoroscopy in 10 human cadavers. Measurements were obtained for positions neutral (0 degree extension), 30 60 degrees flexion, extension. shear strain index (SSI) defined as difference between two tissues (tendon, SSCT, or...

The purpose of this study was to investigate the deformation and displacement normal median nerve in carpal tunnel during index finger thumb motion, using ultrasound. Thirty wrists from 15 asymptomatic volunteers were evaluated. Cross-sectional images motion full extension flexion recorded. On initial final frames, nerve, flexor pollicis longus (FPL), digitorum superficialis (FDS) tendons outlined. Coordinate data recorded cross-sectional area, perimeter, aspect ratio minimal-enclosing...

Abstract We investigated the median nerve deformation in carpal tunnel patients with syndrome and controls during thumb, index finger, middle a four finger motion, using ultrasound. Both wrists of 29 asymptomatic volunteers idiopathic were evaluated by Cross‐sectional images motion from full extension to flexion recorded. Median cross‐sectional area, perimeter, aspect ratio minimal enclosing rectangle, circularity positions calculated. Additionally, was also calculated intra‐rater...

Forceful activities of the wrist were considered to be a risk factor for epicondylitis. However, there are still conflicting evidence concerning work-relatedness The main problem is that little information about which forearm postures capable withstanding higher torque loads and extent differences in torques generated by different postures. objective this study was investigate flexion extension among positions healthy subjects. Twenty wrists 10 asymptomatic volunteers evaluated. apparatus...

ABSTRACT A three‐dimensional (3D) digital preoperative planning system for the osteosynthesis of distal radius fractures was developed clinical practice. To assess usefulness 3D osteosynthesis, we evaluated reproducibility reduction shapes and selected implants in patients with fractures. Twenty wrists 20 fracture who underwent using volar locking plates were evaluated. The performed prior to each surgery. Four surgeons conducted surgeries. placement plate while comparing images between plan...

Wrist injury affects wheelchair basketball players' performance; however, the relationship between distal radioulnar joint (DRUJ) instability and hand functions is unclear. This cross-sectional pilot study investigated DRUJ in elite female athletes using force-monitor ultrasonography.Nine (18 wrists) were included study. A triangular fibrocartilage complex (TFCC) was confirmed magnetic resonance imaging (MRI). Hand evaluated based on range of motion (ROM) wrist palmar flexion, dorsiflexion,...

In cases of distal radius fractures, the fixation volar lunate facet fragment is crucial for preventing subluxation carpal bones. This study aims to clarify sex differences in morphology and its relationship with transverse diameter radius. Sixty-four CT scans healthy wrists (30 males 34 females) were evaluated. Three-dimensional (3D) images reconstructed from data. We defined reference point 1 as starting inclination toward edge, 2 edge joint on bone axis, 3 facet. From 3D coordinates...

Although the automatic diagnosis of fractures using artificial intelligence (AI) has recently been reported to be more accurate than those by orthopedics specialists, big data with at least 1000 images or are required for deep learning convolutional neural network (CNN) improve diagnostic accuracy. The aim this study was develop an AI system capable diagnosing distal radius high accuracy even when relatively small use bi-planar X-rays images.VGG16, a learned image recognition model, used as...

Abstract Objective This study investigated the effects of different doses hypertonic dextrose injection on carpal tunnel subsynovial connective tissue (SSCT) and median nerve in a rabbit model. Methods Thirty‐eight New Zealand white rabbits weighing 4.0–4.5 kg were used. One forepaw was randomly injected with one five treatments: saline‐single injection; saline‐two injections 1 week apart; 10% dextrose‐single 20% or dextrose‐two apart. Animals sacrificed at 12 weeks after initial evaluated...

Objectives The aim of this study was to image both tendon and subsynovial connective tissue movement in patients with carpal tunnel syndrome healthy control volunteers, using sonography speckle tracking. To estimate accuracy tracking method, we used vivo measurements during surgery validate the motion estimated sonography. Methods We recruited 22 volunteers 18 syndrome. Longitudinal sonograms middle finger flexor digitorum superficialis were obtained flexion extension. images analyzed a...

ABSTRACT The objective of this study was to evaluate the correlations between deformation and displacement median nerve flexor tendons during finger motion in carpal tunnel for both syndrome (CTS) patients healthy controls. Sixty‐two wrists 31 asymptomatic volunteers fifty‐one 28 idiopathic CTS were evaluated by ultrasound. middle digitorum superficialis (FDS) tendon, as well area, perimeter, aspect ratio a minimum enclosing rectangle, circularity measured extension flexion positions....

We previously reported that elbow magnetic resonance imaging (MRI) with 7 kg traction increases the joint space width of radiocapitellar and improves articular cartilage visibility without arthrography. However, optimal weight remains unclear. assessed effects different weights on MRI in 30 healthy volunteers. Elbow was performed 3, 5, axial tractions. The width, humeral outline visibility, intraprocedural pain/discomfort were evaluated. parameters measured at lateral medial thirds...

Preoperative planning is important for the osteosynthesis of distal radius fractures. Challenges arise patients presenting with bilateral wrist injuries or a history contralateral injuries. In such cases, estimation morphology and determination plate size from preoperative physical characteristics could prove beneficial. The objective this study was to investigate correlation between articular surface. A total 79 computed tomography (CT) images (41 women 38 men) were evaluated. Physical...

The purpose of this study was to measure the rate-dependent changes in relative motion subsynovial connective tissue (SSCT) and median nerve human carpal tunnel. Using fluoroscopy, we measured middle finger flexor digitorum superficialis tendon, SSCT, eight cadavers during simulated active flexion motions at 2.0, 5.0, 7.5, 10.0 mm/s. shear index defined as difference between tendon SSCT or nerve, expressed a percentage excursion. patterns excursion were each 10% increment (decile) maximum...