Publications by authors named "Erik Wikstrom"
Context: Recurrent trauma and altered biomechanics in those with chronic ankle instability (CAI) have been linked to altered joint loading. Previous studies revealed that patients with CAI exhibit altered joint contact force (JCF) profiles relative to uninjured individuals during walking and landing. Identifying more easily obtainable outcomes that are associated with ankle JCF in those with CAI would reduce the knowledge gap between loading profiles at the ankle joint and outcomes related to CAI.
View Article and Find Full Text PDFContext: Chronic ankle instability (CAI) is associated with altered gait mechanics and impaired sensorimotor function (eg, postural control). While corrective exercise programs are known to improve sensorimotor function in those with CAI, their impact on gait-related outcomes remains unclear.
Design: A randomized controlled trial was conducted to investigate the effects of a corrective exercise program on gait kinetics and postural control in individuals with CAI.
Background: Individuals with chronic ankle instability (CAI) exhibit altered walking mechanics, including changes in joint movement and muscle activation patterns at the ankle. However, amplitude-based analyses of muscle activation during walking have shown inconsistent results between individuals with CAI and uninjured controls. Time-frequency analyses can capture transient and frequency-specific muscle activation patterns that amplitude-based analyses may overlook, offering deeper insights into muscle function during dynamic activities.
View Article and Find Full Text PDFContext: Chronic ankle instability (CAI) is a common consequence of a lateral ankle sprain. Sex differences in functional outcomes exist, but there is a lack of female-specific intervention studies. Hop stabilization training is effective in male athletes with CAI but has not been investigated in female athletes.
View Article and Find Full Text PDFContext: Those with chronic ankle instability (CAI) rely more on visual information to maintain postural control. Plantar massage and ankle joint mobilization are moderately successful at improving CAI-associated postural control impairments. Manual therapies may have a larger influence on the underlying sensory strategy used to maintain postural control, but their effect on these strategies remains unknown.
View Article and Find Full Text PDFBackground: Structural malalignments, such as talar malalignments and hindfoot varus, are hypothesized to contribute to early ankle joint degeneration by altering joint contact force (JCF). These malalignments, common in individuals with chronic ankle instability (CAI), can modify the articular geometry of the ankle joint, potentially leading to abnormal joint loading patterns. This study leverages musculoskeletal modeling and simulation to conceptualize the effects of increasing severity of these malalignments on ankle JCF during walking.
View Article and Find Full Text PDFArticle Synopsis
- * Conducted with 60 participants, the trial randomly assigned them to either a joint mobilization group, a plantar massage group, or a control group with no intervention, assessing their gait before and after treatment.
- * Results revealed no significant changes in gait biomechanics for either treatment compared to the control, indicating that more targeted gait interventions might be needed for effectively altering biomechanics in CAI patients.
Context: Individuals with anterior cruciate ligament reconstruction (ACLR) often fail to return to their previous level of sport performance. Although multifaceted, this inability to regain preinjury performance may be influenced by impaired plyometric ability attributable to chronic quadriceps dysfunction. Whole-body vibration (WBV) acutely improves quadriceps function and biomechanics after ACLR, but its effects on jumping performance outcomes such as jump height, the reactive strength index (RSI), and knee work and power are unknown.
View Article and Find Full Text PDFObjective: To analyse the association between Ankle-GO score during the return to sport process and the probability of becoming a coper 1 year after lateral ankle sprain (LAS). Copers were defined as patients returning to their preinjury sport without loss of function and reporting no episodes of reinjury or giving-way.
Methods: Two months after a LAS, patients performed the Ankle-GO assessment which includes a cluster of four functional tests and two self-reported questionnaires for a maximum score of 25 points.
Article Synopsis
- - An international group of health professionals and individuals with ankle osteoarthritis (OA) collaborated to define a core set of domains to be measured in studies related to ankle OA through a three-part Delphi process, which included online questionnaires and consensus meetings.
- - After gathering responses from 100 participants across 18 countries, five key domains were agreed upon for reporting in ankle OA trials: pain severity, health-related quality of life, function, disability, and ankle range of motion, while 21 domains were excluded.
- - The established core domain set aims to standardize outcome reporting in clinical trials for ankle OA, with recommendations for future research to identify effective measurement tools for these domains.
Article Synopsis
- - Individuals with chronic ankle instability (CAI) often use balance training to improve their stability, but traditional methods may not fully address their needs, leading to the exploration of stroboscopic goggles as an additional tool for training.
- - Research shows that using stroboscopic goggles during balance exercises can lead to statistically significant improvements in certain measures of postural control compared to standard balance training alone, although results can vary across different studies.
- - The recommendation based on the evidence suggests that incorporating stroboscopic goggles into balance training for individuals with CAI can provide better postural control outcomes, with a moderate to high level of confidence in the findings.
Introduction: Sport and tactical populations are often impacted by musculoskeletal injury. Many publications have highlighted that risk is correlated with multiple variables. There do not appear to be existing studies that have evaluated a predetermined combination of risk factors that provide a pragmatic model for application in tactical and/or sports settings.
View Article and Find Full Text PDFBackground: Gait retraining using haptic biofeedback medially shifts the center of pressure (COP) while walking in orthopedic populations. However, the ideal sensor location needed to effectively shift COP medially has not been identified in people with chronic ankle instability (CAI).
Research Questions: Can a heel sensor location feasibly be employed in people with CAI without negatively altering kinematics? Does a heel sensor placement relative to the 5th metatarsal head (5MH) impact COP location while walking in people with CAI?
Methods: In this exploratory crossover study, 10 participants with CAI walked on a treadmill with vibration feedback for 10 minutes with a plantar pressure sensor under the heel and 5MH.
Chronic ankle instability is a condition linked to progressive early ankle joint degeneration. Patients with chronic ankle instability exhibit altered biomechanics during gait and jump landings and these alterations are believed to contribute to aberrant joint loading and subsequent joint degeneration. Musculoskeletal modeling has the capacity to estimate joint loads from individual muscle forces.
View Article and Find Full Text PDFApplications of Artificial Intelligence in PSMA PET/CT for Prostate Cancer Imaging.
Semin Nucl Med
January 2024
Prostate-specific membrane antigen (PSMA) positron emission tomography/computed tomography (PET/CT) has emerged as an important imaging technique for prostate cancer. The use of PSMA PET/CT is rapidly increasing, while the number of nuclear medicine physicians and radiologists to interpret these scans is limited. Additionally, there is variability in interpretation among readers.
View Article and Find Full Text PDFChanges in movement capabilities after an injury to the ankle may impose adaptations in the peripheral and central nervous system. The purpose of our study was to compare the electromyogram (EMG) profile of ankle stabilizer muscles and stride-time variation during treadmill running in individuals with and without chronic ankle instability (CAI). Recreationally active individuals with (n = 12) and without (n = 15) CAI ran on a treadmill at two speeds.
View Article and Find Full Text PDFArticle Synopsis
- The study examines the rates and causes of lateral ankle sprains in NCAA sports from the 2014-15 to 2018-19 seasons to assess the injury's impact and guide prevention strategies.
- A total of 3,910 sprains were reported, with the highest incidence in men's basketball, and competition events posing a significantly higher risk than practices.
- Nearly half of the sprains resulted in time loss, and the majority were caused by player contact, indicating potential areas for targeted prevention efforts.*
Background: Individuals with chronic ankle instability (CAI) exhibit aberrant gait biomechanics relative to uninjured controls. Altered gait biomechanics likely contribute aberrant joint loading and subsequent early onset ankle joint degeneration. Joint (i.
View Article and Find Full Text PDFContext: Limited evidence exists regarding the assessment of single-item patient-reported outcomes when patients are medically cleared to return to sport after a lateral ankle sprain (LAS) injury.
Objective: To evaluate self-reports of improvement in health status, pain, function, and disability at return to sport after an LAS.
Design: Descriptive study.
Article Synopsis
- - Ankle osteoarthritis (OA) is a common and painful condition with no established guidelines for management, largely due to the absence of universally accepted outcome measures in research studies.
- - To address this issue, an international steering committee will guide the creation of a core domain set through a three-phase process, involving input from both patients and healthcare professionals.
- - The first phase includes gathering candidate domains from existing research and interviews, followed by committee review in the second phase, and finally reaching a consensus through a Delphi survey process in the third phase.
Article Synopsis
- Ankle sprains are common in sports and can lead to long-term functional deficits, but this study focuses on the short-term functional recovery within the first two weeks post-injury.
- A study of 88 patients revealed statistically significant improvements in self-reported function using the Foot and Ankle Ability Measure (FAAM) during the two-week period, with high percentages of patients exceeding the minimal clinically important difference in both daily living and sports activities.
- Despite these improvements, a notable portion of patients still reported significant functional limitations in sports by the end of the two weeks, indicating ongoing recovery challenges even after initial progress.
Purpose: This study aimed to determine associations between T1ρ relaxation times of talar and subtalar articular cartilage and commonly altered gait biomechanics and postural control outcomes in those with chronic ankle instability (CAI).
Methods: Fifteen individuals with CAI (21.13 ± 1.
Context: Those with chronic ankle instability (CAI) demonstrate deleterious changes in talar cartilage composition, resulting in alterations of talar cartilage loading behavior. Common impairments associated with CAI may play a role in cartilage behavior in response to mechanical loading.
Objective: To identify mechanical and sensorimotor outcomes that are linked with the magnitude of talar cartilage deformation after a static loading protocol in patients with and those without CAI.
Purpose: This study aimed to identify associations between dorsiflexion range of motion (DFROM), functional hop test performance, and hopping biomechanics with the magnitude of talar cartilage deformation after a standardized hopping protocol in individuals with and without chronic ankle instability (CAI).
Methods: Thirty CAI and 30 healthy individuals participated. Ankle DFROM was assessed using the weight-bearing lunge test.