Ultrasonography (renamed from the Journal of Korean Society Ultrasound in Medicine January 2014), official English-language journal (KSUM), is an international peer-reviewed academic dedicated to practice, research, technology, and education dealing with medical ultrasound, Aims Scope:Ultrasonography ultrasound.It published four times per year: 1, April July October 1. Original articles, topical reviews, pictorial essays, notable case reports are covering state-of-the-art content. also...

Background The knee is one of the most frequently injured joints, including 80 000 anterior cruciate ligament (ACL) tears in United States each year. Bone bruises are seen over 80% patients with ACL injuries, and have been associated an overt loss cartilage overlying those regions within 6 months injury. Hypothesis level contact pressure developed human joint extent articular underlying subchondral bone injuries will depend on mechanism applied loads/moments during rupture ACL. Study Design...

Background: Physical therapy (PT) is often prescribed for patients with rotator cuff tears. The extent to which PT influences strength, range of motion (ROM), and patient-reported outcomes has been studied extensively, but the effect on in vivo joint kinematics not well understood. Purpose: To assess influence symptomatic pathology effects shoulder motion, outcomes. Study Design: Controlled laboratory study. Methods: Twenty-five a tear 25 age-matched asymptomatic control subjects were...

ABSTRACT Rotator cuff tears are common and often repaired surgically, but post‐operative repair tissue healing, shoulder function can be unpredictable. Tear chronicity is believed to influence clinical outcomes, conventional approaches for assessing tear subjective. Shear wave elastography (SWE) a promising technique soft via estimates of shear speed (SWS), this has not been used extensively on the rotator cuff. Specifically, effects age pathology SWS well known. The objectives study were...

This study documents skull fracture characteristics on infant porcine specimens under known impact conditions with respect to age and interface. A single causing was conducted the of aged 2-28 days (n = 76). Paired rigid compliant impacts at same energy were each specimen age. Impact force, duration, length recorded. Energy required initiate increased For a given energy, interface caused more damage than for 17 days, but less 24-28 days. The documentation cause resulting propagation may be...

Shoulder injuries are common among competitive swimmers, and the progression of shoulder pathology is not well understood. The objective this study was to assess extent which years swim training were associated with physical properties supraspinatus muscle tendon, strength, self-reported assessments pain function.

An infant less than 18 months of age with a skull fracture has one in three chance abuse. Injury biomechanics are often used the investigation these cases. In addition to case-based investigations, computer modeling, and test dummies, animal model studies can aid investigations. This study documents effects on mechanical properties parietal bone coronal suture porcine infants correlates bending existing human data. Three beam specimens were cut from aged 3 days, 7 10 14 21 days: across two...

Abstract: The objective of this study was to document patterns fracture on infant porcine skulls aged 2–28 days ( n = 57) because a single, high energy blunt impact the parietal bone with rigid (nondeformable) and compliant (deformable) interfaces. Fracture were mapped using Geographic Information System software. For same generated force, interface produced more fractures than for all ages. This also showed that increased level versus an earlier lower resulted in new sites initiation caused...

Knee hyperextension has been described as a mechanism of isolated anterior cruciate ligament (ACL) tears, but clinical and experimental studies have produced contradictory results for the injuries injury sequence caused by loading mechanism. The hypothesis this study was that bicruciate would occur result knee producing high tibio-femoral (TF) compressive forces cause translation tibia to rupture ACL, while joint extension simultaneously induce posterior (PCL). Six human knees were loaded in...

Background: Glenohumeral joint (GHJ) dislocations are common, and the resulting shoulder instability is often treated with arthroscopic stabilization. These procedures result in favorable clinical outcomes, but abnormal GHJ motion may persist, which place patients at risk for developing osteoarthritis. However, effects of stabilization on not well understood. Hypothesis: significantly influenced by anterior stabilization, postsurgical measures different from those control subjects. Study...

This study documents four clinical cases of fatal crush injuries to children between 1.5 and 6 years age with correlations modeled stress clinically observed fracture patterns. The case fractures were concentrated in the basicranium, bridged impact sites, traversed middle cranial fossa area spheno-occipital synchondrosis. crushing forces from these recreated on a simplified finite element model cranium by applying bilateral pressures corresponding regions. Numerous trials run develop...

Measures of scapulothoracic motion are dependent on accurate imaging the scapula and thorax. Advanced radiographic techniques can provide measures scapular motion, but limited 3D volume these often precludes measurement thorax motion. To overcome this, a coordinate system was defined based position rib pairs then compared to conventional sternum/spine-based system. Alignment rib-based used, with rib3:rib4 pairing aligned within 4.4 ± 2.1 deg

An infant less than 18 months of age with a skull fracture has 1 in 3 chance abuse [1]. While the parietal bone is most often site fracture, an abusive situation difficult to diagnose based on characteristics alone [2]. Age child one important factor determining abuse. Injury biomechanics are used investigation cases suspected involve [3]. In addition case-based investigations, computer modeling, and test dummies, animal model studies can aid these investigations. relationship between human...

Post-surgical changes in adjacent segment motion are considered a factor further development of degeneration and cervical radiculopathy. The objective was to examine the extent correlations between physiological foramina long-term patient reported outcomes (PRO).Biplane X-ray imaging CT-based markerless tracking were used measure 3D static dynamic dimensions during neck axial rotation extension from 18 patients treated for C5-6 radiculopathy with fusion or arthroplasty. Minimum foraminal...

Objective To compare changes in foraminal motion at two time points post-surgery between artificial disc replacement (ADR) and anterior cervical discectomy fusion (ACDF). Methods Eight ACDF 6 ADR patients (all single-level C5-6) were tested 2 years (T1) 6.5 (T2) post-surgery. The minimum height (FH.Min) width (FW.Min) achieved during neck axial rotation extension, the range of these dimensions (FH.Rn FW.Rn, respectively) measured using a biplane dynamic x-ray system, CT imaging model-based...

We previously developed microstructure-inspired mechanism-based (MIMB) Hybrid-Experimental-Modeling-Computational (HEMC) methods for finite element simulation of skull fracture with an Elemental Approach. This approach was demonstrated by successfully simulating intermediate-scale skullcap indentation/impact experiment, computational patterns well-matched the experiment. However, necessity use relatively small elements and deterministic nature simulations hindered direct applicability...

There is significant concern that blast overpressure can cause mild traumatic brain injury (mTBI). An accurate understanding of the flow and event as well it’s interaction with head helmet system a necessary first step in establishing loading conditions to head. It also provides means for model validation other predictive capabilities. A custom-designed Blast Overpressure Bust (BOB) containing 22 surface pressure sensors was rigidly mounted live-fire event. The field tests were conducted an...

There is a 1 in 3 chance of abuse case where child less than 18 months has skull fracture [1]. The most commonly fractured site on the parietal bone, however it currently difficult to establish causation injury based characteristics [2]. Thus, biomechanics are often utilized investigation suspected cases [3]. Computer simulations, test dummies, and animal models all used as aids assessment causation. For given impact situation, number variables can control pattern fracture. A study by Baumer...