Article
Multidisciplinary Sciences
Cody R. Criss, Adam S. Lepley, James A. Onate, Brian C. Clark, Janet E. Simon, Christopher R. France, Dustin R. Grooms
Summary: Prolonged treatment resistant quadriceps weakness after ACL reconstruction (ACL-R) can lead to re-injury risk, poor patient outcomes, and early development of osteoarthritis. This study aimed to understand the neural contributions to quadriceps weakness by investigating the relationship between brain activity during a knee task and strength asymmetry in individuals after ACL-R. The results showed that lower strength asymmetry was related to increased activity in specific brain regions, and patients with weaker quadriceps displayed greater cortical activity compared to those without asymmetry and healthy controls.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
Hiroshi Akima, Kazuhiro Maeda, Norihiro Shima
Summary: The study compares the neuromuscular activation patterns of the different muscles of the quadriceps femoris during isokinetic concentric and eccentric contractions. Thirteen healthy men performed knee extensions at various velocities and joint angles, and the surface electromyographic activities were recorded. The results show that the neuromuscular activation of the quadriceps femoris is angle-dependent, with the vastus intermedius playing a significant role during flexed contractions.
SCIENTIFIC REPORTS
(2023)
Review
Orthopedics
Peta T. Johnston, Jodie A. McClelland, Julian A. Feller, Kate E. Webster
Summary: The restoration of knee extensor strength following QT ACL reconstruction does not reach 90% even at 24 months post-operation, while knee flexor strength exceeds 90% at the 9-15 month mark. Compared to other ACL graft types, knee extensor strength seems to be similar to patellar tendon autograft (PT) but weaker than hamstring tendon autograft (HT) at the 5-8-month mark post-operation. Additionally, peak knee flexor strength is significantly higher at 5-8 months in QT ACL reconstruction patients compared to HT patients.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2021)
Article
Orthopedics
Jennifer L. Hunnicutt, John W. Xerogeanes, Liang-Ching Tsai, Peter A. Sprague, Michael Newsome, Harris S. Slone, Mark A. Lyle
Summary: The study aimed to investigate the early effects of ACL reconstruction with all-soft tissue quadriceps tendon autografts on strength recovery, range of motion, and knee laxity. Results showed that female patients had more severe knee extension ROM deficits at 6 weeks and poorer quadriceps strength at 6 months, while male patients demonstrated better recovery outcomes.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2021)
Review
Orthopedics
Harasees Singh, Isaac Glassman, Andrew Sheean, Yuichi Hoshino, Kanto Nagai, Darren de Sa
Summary: The study aims to develop a comprehensive complications profile for quadriceps tendon-autograft anterior cruciate ligament reconstruction (QT ACL-R). The results show that QT ACL-R has similar rates and types of postoperative complications compared to other graft types.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2023)
Article
Biotechnology & Applied Microbiology
Huizhi Wang, Chaohua Fang, Mingzhu Tao, Qinyi Shi, Kaixin He, Cheng-Kung Cheng
Summary: The study found that an hourglass-shaped graft was more effective in restoring knee stability and graft force at a knee flexion angle of 30 degrees compared to columnar grafts, while also reducing the risk of notch impingement.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Do Kyung Kim, Geon Park, Joon Ho Wang, Liang-Tseng Kuo, Won Hah Park
Summary: This study investigated the relationship between preoperative quadriceps strength and postoperative knee function in patients after ACL reconstruction. The results showed a significant negative correlation between preoperative quadriceps strength deficit and postoperative knee function.
SCIENTIFIC REPORTS
(2022)
Article
Orthopedics
M. T. Murphy, N. Wang, D. T. Felson, M. C. Nevitt, C. E. Lewis, L. Frey-Law, A. Guermazi, N. A. Segal
Summary: This study found that women had higher levels of knee flexor coactivation than men, and in men, knee flexor coactivation was more strongly associated with worsening cartilage morphology.
OSTEOARTHRITIS AND CARTILAGE
(2022)
Article
Sport Sciences
Alexa K. Johnson, Kazandra M. Rodriguez, Adam S. Lepley, Riann M. Palmieri-Smith
Summary: This study longitudinally examined the quadriceps torque complexity in individuals who underwent ACL reconstruction after ACL injury. The results showed a decrease in quadriceps peak torque and an increase in torque complexity in the involved limb compared to the uninvolved limb. These findings suggest that ACL reconstruction not only leads to a decline in quadriceps strength, but also compromises the quality of quadriceps muscle contraction, which may contribute to impaired physical function in individuals following ACL reconstruction.
JOURNAL OF SCIENCE AND MEDICINE IN SPORT
(2023)
Article
Multidisciplinary Sciences
Giovanni Putame, Mara Terzini, Fabrizio Rivera, Maeruan Kebbach, Rainer Bader, Cristina Bignardi
Summary: This study compares the impact of two insert geometries, namely ultra-congruent (UC) and medial-pivot (MP), on the biomechanics of a total knee endoprosthesis. The results show that the MP design allows for more natural joint kinematics and potentially reduces the occurrence of insert loosening.
SCIENTIFIC REPORTS
(2022)
Article
Orthopedics
Katrin Karpinski, Martin Haener, Sebastian Bierke, Theresa Diermeier, Wolf Petersen
Summary: This study compared the outcomes of ACL reconstruction using autologous QT grafts versus ST grafts, finding no significant differences in knee stability and subjective outcomes between the two groups. Therefore, QT may serve as a viable alternative graft option for primary ACL reconstruction.
ORTHOPAEDIC JOURNAL OF SPORTS MEDICINE
(2021)
Article
Orthopedics
Jobe Shatrov, Benjamin Freychet, Graeme P. Hopper, Benoit Coulin, Abdo El Helou, Jae-Sung An, Thais Dutra Vieira, Bertrand Sonnery-Cottet
Summary: The aim of this study was to evaluate the risk of osteoarthritis (OA) in the medium-term follow-up of combined anterior cruciate ligament (ACL) reconstruction (ACLR) and anterolateral ligament reconstruction (ALLR) compared to isolated ACLR. The results showed no difference in joint space narrowing in the lateral tibiofemoral and patellofemoral compartments between the two groups, but the risk of medial patellofemoral joint space narrowing was higher in the isolated ACLR group.
AMERICAN JOURNAL OF SPORTS MEDICINE
(2023)
Article
Orthopedics
Dan Ogborn, Sheila McRae, Gabriel Larose, Jeff Leiter, Holly Brown, Pete MacDonald
Summary: The impact of different methods on measuring knee flexor strength differences is significant, and limb symmetry is also influenced by assessment methods.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2023)
Review
Sport Sciences
Beyza Tayfur, Chedsada Charuphongsa, Dylan Morrissey, Stuart Charles Miller
Summary: The study identified persistent neuromuscular deficits following knee injuries for several years, particularly in ACL injured populations. These deficits include muscle strength and voluntary activation impairments, as well as neural alterations. Further research is needed to better understand and address these deficits in order to improve rehabilitation outcomes and potentially prevent early-onset post-traumatic osteoarthritis.
Article
Orthopedics
Xin He, Jihong Qiu, Mingde Cao, Yui Chung Ho, Hio Teng Leong, Sai-Chuen Fu, Michael Tim-Yun Ong, Daniel T. P. Fong, Patrick Shu-Hang Yung
Summary: The study compared the differences in muscle strength, passive muscle stiffness, muscle activation, hop performance, and knee stability between the involved and uninvolved limbs of ACL-reconstructed patients, finding that deficits in muscle strength and activation were important contributors to poor performance. Specifically, decreased quadriceps strength and shear modulus were associated with shorter hop distances, while deficits in muscle stiffness and activation patterns were identified as areas for improvement in rehabilitation programs.
ORTHOPAEDIC JOURNAL OF SPORTS MEDICINE
(2022)
Article
Clinical Neurology
June Mei Tse Quek, Joy Tan, Irene Toh, John Li-Tat Chen, William Yeo, Rachel Chia, Adeline Ang, Yong-Hao Pua
Summary: Through a retrospective longitudinal study, this research identified preoperational leg weakness and body mass index as factors associated with postoperative pain and walking disability in patients who underwent lumbar fusion surgery. Patients with greater depression symptoms may have poorer self-reported outcomes.
Article
Rehabilitation
Kelly J. Bower, Shamala Thilarajah, Gavin Williams, Yong-Hao Pua, Dawn Tan, Ross A. Clark
Summary: The study aimed to examine the validity, predictive ability, and responsiveness of standing centre of pressure variables in subacute stroke patients. The results showed that some centre of pressure variables were moderately correlated with gait speed and step test scores, and also predicted falls risk. However, the standing centre of pressure variables had limited validity in reflecting dynamic balance and falls risk.
DISABILITY AND REHABILITATION
(2023)
Article
Sport Sciences
Timothy H. Retchford, Kylie J. Tucker, Harvi F. Hart, Adam Semciw, Patrick Weinrauch, Alison Grimaldi, Sallie M. Cowan, Kay M. Crossley, Joanne L. Kemp
Summary: This study investigated muscle morphology in individuals with hip-related pain and without femoro-acetabular impingement syndrome (FAIS). The results showed no significant differences in muscle volume and fatty infiltrate between the symptomatic and less-symptomatic sides of participants with hip-related pain, as well as between those with and without hip-related pain. Greater gluteus medius muscle volume was associated with fewer symptoms and greater strength in individuals with hip-related pain.
INTERNATIONAL JOURNAL OF SPORTS PHYSICAL THERAPY
(2022)
Review
Sport Sciences
Anouk P. Urhausen, Bjornar Berg, Britt Elin Oiestad, Jackie L. Whittaker, Adam G. Culvenor, Kay M. Crossley, Carsten B. Juhl, May Arna Risberg
Summary: This study assessed the measurement properties of knee muscle strength tests after ACL and/or meniscus injury and found a lack of evidence supporting these tests. High-quality studies are urgently needed. Isokinetic concentric strength tests are most recommended.
BRITISH JOURNAL OF SPORTS MEDICINE
(2022)
Article
Rehabilitation
Yong-Hao Pua, Cheryl Lian-Li Poon, Felicia Jie-Ting Seah, John Wei-Ming Tan, Ee-Lin Woon, Hwei-Chi Chong, Julian Thumboo, Ross Allan Clark, Seng-Jin Yeo
Summary: After total knee arthroplasty, the improvement of quadriceps strength and gait speed can be better interpreted by examining trajectory curves across levels of self-reported walking and stair climbing function. The study found that quadriceps strength and gait speed improved nonlinearly over time, and greater improvements were associated with higher levels of self-reported walking and stair climbing function at month-6. It was observed that among female patients with great difficulty in stair ascent and ambulation, quadriceps strength trajectory curves plateaued after 8 weeks post-surgery.
AMERICAN JOURNAL OF PHYSICAL MEDICINE & REHABILITATION
(2023)
Review
Sport Sciences
Thomas J. West, Andrea M. Bruder, Kay M. Crossley, Adam G. Culvenor
BRITISH JOURNAL OF SPORTS MEDICINE
(2023)
Editorial Material
Sport Sciences
Kay M. Crossley, Karen Litzy, Jackie L. Whittaker
BRITISH JOURNAL OF SPORTS MEDICINE
(2023)
Article
Nutrition & Dietetics
Yong-Hao Pua, Laura Tay, Ross Allan Clark, Julian Thumboo, Ee-Ling Tay, Shi-Min Mah, Yee-Sien Ng
Summary: In older adults with no self-reported mobility limitations, height, weight, and body mass index (BMI) were found to be significantly associated with handgrip strength, with height showing the strongest association.
CLINICAL NUTRITION ESPEN
(2023)
Article
Sport Sciences
Isabel S. Moore, Kay M. Crossley, Kari Bo, Margo Mountjoy, Kathryn E. Ackerman, Juliana da Silva Antero, Jorunn Sundgot Borgen, Wendy J. Brown, Caroline S. Bolling, Benjamin Clarsen, Wayne Derman, Paul Dijkstra, Amber Donaldson, Kirsty J. Elliott-Sale, Carolyn A. Emery, Lene Haakstad, Astrid Junge, Nonhlanhla S. Mkumbuzi, Sophia Nimphius, Debbie Palmer, Mireille van Poppel, Jane S. Thornton, Rita Tomas, Phathokuhle C. Zondi, Evert Verhagen
Summary: The IOC made recommendations for recording and reporting epidemiological data on injuries and illness in sports in 2020, with little attention to female athletes. This supplement aims to propose a taxonomy for categorizing female athlete health problems, provide recommendations for data capture, and extend the existing consensus statement to include issues affecting female athletes. Ten domains of female health were identified, and recommendations for data capture will improve epidemiological studies and inform better injury prevention strategies.
BRITISH JOURNAL OF SPORTS MEDICINE
(2023)
Article
Orthopedics
Yong-Hao Pua, Bryan Yijia Tan, Juanita Low, Ee-Lin Woon, Seng-Jin Yeo, Ross A. Clark, Janet P. Bettger, Michelle J. Pereira, Chun-Yue Tan, Julian Thumboo
Summary: This study aimed to examine the association between pain, negative affect (anxiety and depression), and the discordance between self-reported measures and performance-based measures of physical function. The results showed that knee pain intensity was strongly associated with the discordance, while anxiety had a weak association, and depression had no significant association with the discordance.
JOURNAL OF ARTHROPLASTY
(2023)
Article
Rehabilitation
Aileen E. E. Scully, Dawn Tan, Beatriz Ito Ramos de Oliveira, Keith D. D. Hill, Ross Clark, Yong Hao Pua
Summary: A new clinician-rated tool (FOG Severity Tool-Revised) was developed to improve the assessment of freezing of gait (FOG) severity. This study investigated the validity and reliability of the tool in people with Parkinson's disease. The FOG Severity Tool-Revised demonstrated sufficient validity and reliability in this limited sample.
PHYSIOTHERAPY RESEARCH INTERNATIONAL
(2023)
Article
Geriatrics & Gerontology
Yong-Hao Pua, Laura Tay, Berend Terluin, Ross Allan Clark, Julian Thumboo, Ee-Ling Tay, Shi-Min Mah, Yee-Sien Ng
Summary: This study compared the clinical cutpoints of gait speed and 5-STS estimated using the ROC and APM methods. The results showed that the APM method provided more accurate cutpoints, which were closely related to self-reported walking difficulty, stair climbing difficulty, and mobility limitations.
ARCHIVES OF GERONTOLOGY AND GERIATRICS
(2023)
Article
Rehabilitation
Aileen Eugenia Scully, Dawn May Leng Tan, Beatriz IR. de Oliveira, Keith David Hill, Ross Clark, Yong Hao Pua
Summary: This study aims to investigate the validity and reliability of the Freezing of Gait Severity Tool (FOG Tool). After conducting a series of assessments on people with Parkinson's disease, it was found that the FOG Tool had strong associations with the Freezing of Gait Questionnaire and excellent test-retest reliability. Compared to the Timed Up and Go (TUG), the FOG Tool was more successful in triggering freezing.
DISABILITY AND REHABILITATION
(2023)
Review
Sport Sciences
Sally L. L. Coburn, Kay M. M. Crossley, Joanne L. L. Kemp, Stuart J. J. Warden, Tom J. J. West, Andrea M. M. Bruder, Benjamin F. F. Mentiplay, Adam G. G. Culvenor
Summary: This study summarized the impact of activity-related joint loading on knee and hip cartilage in healthy adults. It found that certain joint loading activities can lead to a decrease in cartilage, but also provided information on the recovery time of knee cartilage.
SPORTS MEDICINE-OPEN
(2023)
Article
Geriatrics & Gerontology
Yong-Hao Pua, Berend Terluin, Laura Tay, Ross Allan Clark, Julian Thumboo, Ee-Ling Tay, Shi-Min Mah, Yee-Sien Ng
Summary: This study introduces and demonstrates the utility of an item response theory (IRT) method in estimating frailty index (FI) interpretation thresholds in community-dwelling adults, providing a new tool and reference for defining frailty.
ARCHIVES OF GERONTOLOGY AND GERIATRICS
(2024)