Muscle Activation During Landing Before and After Fatigue in Individuals With or Without Chronic Ankle Instability

Ankle instability is a common condition in physically active individuals. It often occurs during a jump landing or lateral motion, particularly when participants are fatigued

Patellofemoral Pain Syndrome Alters Neuromuscular Control and Kinetics during Stair Ambulation

The aim of the study was to investigate differences in frontal plane knee kinetics, onset timing and dura-tion of the gluteus medius (GMed), adductor longus (AL), and vastus medialis oblique (VMO) during stair ambulation between those with and without patellofemoral pain syndrome (PFPS). Twenty PFPS patients and twenty healthy participants completed stair ambulation while surface electromyography (EMG), video, and ground reaction forces were collected. PFPS patients had a higher peak internal knee abduction moment during stair ascent, and a higher internal knee abduction impulse for both ascent and descent. During stair ascent, PFPS patients displayed earlier onset of the AL and later onset of GMed, compared to the healthy individuals. Also, PFPS patients had longer activation duration of the AL and shorter activation durations of the VMO and GMed during stair ascent. During stair descent, PFPS patients displayed delayed GMed onset and shorter activation duration of GMed and VMO. The results of the study suggest that altered neuromuscular control of the medial thigh musculature may be an important contributor to PFPS

Corticospinal Activity During A Single-Leg Stance In People With Chronic Ankle Instability

Purpose: The aim of the study was to determine whether corticospinal excitability and inhibition of the tibialis anterior during single-leg standing differs among individuals with chronic ankle instability (CAI), lateral ankle sprain copers, and healthy controls. Methods: Twenty-three participants with CAI, 23 lateral ankle sprain copers, and 24 healthy control participants volunteered. Active motor threshold (AMT), normalized motor-evoked potential (MEP), and cortical silent period (CSP) were evaluated by transcranial magnetic stimulation while participants performed a single-leg standing task. Results: Participants with CAI had significantly longer CSP at 100% of AMT and lower normalized MEP at 120% of AMT compared to lateral ankle sprain copers (CSP100%: p = 0.003, MEP120%: p = 0.044) and controls (CSP 100%: p = 0.041, MEP120%: p = 0.006). Conclusion: This investigation demonstrated altered corticospinal excitability and inhibition of the tibialis anterior during single-leg standing in participants with CAI. Further research is needed to examine the effects of corticospinal maladaptations to motor control of the tibial anterior on postural control performance in those with CAI

Corticospinal Activity during a Single-Leg Stance in People with Chronic Ankle Instability

PURPOSE: The aim of the study was to determine whether corticospinal excitability and inhibition of the tibialis anterior during single-leg standing differs among individuals with chronic ankle instability (CAI), lateral ankle sprain copers, and healthy controls. METHODS: Twenty-three participants with CAI, 23 lateral ankle sprain copers, and 24 healthy control participants volunteered. Active motor threshold (AMT), normalized motor-evoked potential (MEP), and cortical silent period (CSP) were evaluated by transcranial magnetic stimulation while participants performed a single-leg standing task. RESULTS: Participants with CAI had significantly longer CSP at 100% of AMT and lower normalized MEP at 120% of AMT compared to lateral ankle sprain copers (CSP100%: p = 0.003; MEP120%: p = 0.044) and controls (CSP100%: p = 0.041; MEP120%: p = 0.006). CONCLUSION: This investigation demonstrated altered corticospinal excitability and inhibition of the tibialis anterior during single-leg standing in participants with CAI. Further research is needed to examine the effects of corticospinal maladaptations to motor control of the tibial anterior on postural control performance in those with CAI

Osteoarthritis Prevalence Following Anterior Cruciate Ligament Reconstruction: A Systematic Review and Numbers-Needed-to-Treat Analysis

To determine the prophylactic capability of anterior cruciate ligament (ACL) reconstruction in decreasing the risk of knee osteoarthritis (OA) when compared with ACL-deficient patients, as well as the effect of a concomitant meniscectomy. We also sought to examine the influence of study design, publication date, and graft type as well as the magnitude of change in physical activity from preinjury Tegner scores in both cohorts

Alterations in Neuromuscular Control at the Knee in Individuals With Chronic Ankle Instability

Few authors have assessed neuromuscular knee-stabilization strategies in individuals with chronic ankle instability (CAI) during functional activities

Chronic Ankle Instability and Neural Excitability of the Lower Extremity

Neuromuscular dysfunction of the leg and thigh musculature, including decreased strength and postural control, is common in patients with chronic ankle instability (CAI). Understanding how CAI affects specific neural pathways may provide valuable information for targeted therapies

Neural Excitability and Joint Laxity in Chronic Ankle Instability, Coper, and Control Groups

Neuromuscular and mechanical deficiencies are commonly studied in participants with chronic ankle instability (CAI). Few investigators have attempted to comprehensively consider sensorimotor and mechanical differences among people with CAI, copers who did not present with prolonged dysfunctions after an initial ankle sprain, and a healthy control group

Opioid and Non-Opioid Prescribing Rates for Ankle Fractures in Emergency Departments across the United States between 2006 and 2015

This presentation describes the percentage of patients prescribed a controlled and non-controlled medication in an United States Emergency Department for a diagnosed ankle fracture

Opioid and Non-Opioid Prescribing Rates for Ankle Fractures in Emergency Departments Across the United States Between 2006 and 2015

Context: An ankle fracture is a common injury observed in the Emergency Department (ED) and is often treated conservatively or surgically, depending on whether the fracture is stable. Opioids provide value for the management of acute musculoskeletal pain. However, prolong opioid use is associated with well-known consequences in the United States such as dependence, abuse and/or misuse. Considering these concerns and the effectiveness of non-pharmacological interventions for the treatment of acute pain, it is critical to identify the prescribing patterns for patients diagnosed with an ankle fracture in the ED. Objective: Describe the percentage of patients prescribed a scheduled and non-controlled medication in the ED. Methods: This was a secondary analysis of the publicly available data collected through the National Hospital Ambulatory Medical Care Survey from 2006-2015. Data analyzed using the sampled visit weight, yielding an unbiased national estimate of ED percentages. Due to the complex sample design, sampling errors were determined using SAS software. Results: From 2006-2015, 86.9% of patients presenting with an ankle fracture received medication during their ED visit. Among those prescribed a medication, 63.02% were prescribed a controlled substance and 34.29% were prescribed a non-controlled substance. The majority of the controlled substances were given to patients between the ages of 25-64. Conclusion: Approximately 2 out of 3 patients diagnosed with an ankle fracture in the ED received a controlled substance. The majority of these given to young-adults. Other effective non-pharmacological interventions should be explored to prevent the risk of the well-known consequences associated with opioid use. Word Count: 25