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    3682 results match your criteria Clinical Biomechanics [Journal]

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    Assessment of cervical stiffness in axial rotation among chronic neck pain patients: A trial in the framework of a non-manipulative osteopathic management.
    Clin Biomech (Bristol, Avon) 2018 Feb 12;53:65-71. Epub 2018 Feb 12.
    Laboratory of Functional Anatomy, Faculty of Motor Sciences, Université Libre de Bruxelles (ULB), Brussels, Belgium.
    Background: Cervical stiffness is a clinical feature commonly appraised during the functional examination of cervical spine. Measurements of cervical stiffness in axial rotation have not been reported for patients with neck pain. The purpose of this study was to investigate cervical spine stiffness in axial rotation among neck pain patients and asymptomatic subjects, and to analyze the impact of osteopathic management. Read More

    Biomechanical simulation of traumatic brain injury in the rat.
    Clin Biomech (Bristol, Avon) 2018 Jan 31. Epub 2018 Jan 31.
    NorthShore University Health System Research Institute, 1001 University Place, Evanston, IL 60201, United States. Electronic address:
    Background: Traumatic brain injury poses an enormous clinical challenge. Rats are the animals most widely used in pre-clinical experiments. Biomechanical simulations of these experiments predict the distribution of mechanical stress and strain across key tissues. Read More

    Large enthesophytes in teenage skulls: Mechanical, inflammatory and genetic considerations.
    Clin Biomech (Bristol, Avon) 2018 Feb 12;53:60-64. Epub 2018 Feb 12.
    School of Health and Sport Sciences, University of the Sunshine Coast, Maroochydore, QLD, Australia.
    Background: The literature implies that large enthesophytes are exclusive to genetically predisposed individuals and to Spondyloarthropathies sufferers. Accordingly, the aim of this investigation and report was to assess the involvement of genetic predisposition, inflammatory and/or mechanical influences in the development of large enthesophytes in a sample population of teenagers presenting with large enthesophytes emanating from the external occipital protuberance.

    Methods: Analysis was based on four teenage males (13-16 year-old) possessing 14. Read More

    Medial tilting of the joint line in posterior stabilized total knee arthroplasty increases contact force and stress.
    Clin Biomech (Bristol, Avon) 2018 Feb 9;53:54-59. Epub 2018 Feb 9.
    Department of Orthopaedic Surgery, Kyoto University, Graduate School of Medicine, Kyoto, Japan.
    Background: Kinematically aligned total knee arthroplasty is based on the concept to represent the premorbid joint alignment with cruciate-retaining implants, characterized by medial tilt and internal rotation. However, kinematic and kinetic effects of kinematically aligned total knee arthroplasty with posterior-stabilized implants is unknown. The purpose of this study was to examine the effect of medial tilting of the joint line with posterior-stabilized implants. Read More

    Can breast characteristics predict upper torso musculoskeletal pain?
    Clin Biomech (Bristol, Avon) 2018 Feb 6;53:46-53. Epub 2018 Feb 6.
    Biomechanics Research Laboratory, School of Medicine, Faculty of Science, Medicine & Health, University of Wollongong, Northfields Avenue, Wollongong, New South Wales 2522, Australia. Electronic address:
    Background: Several studies have associated a large breast size with an increased prevalence and severity of musculoskeletal pain, particularly pain in the upper torso. Despite this evidence, no research has explored whether breast size or related characteristics are risk factors for upper torso musculoskeletal pain.

    Methods: A backward multiple regression analysis was performed to identify whether characteristics of the breasts and upper torso, as well as physical factors known to be associated with musculoskeletal pain, could predict musculoskeletal pain among a cohort of 378 Australian women aged 18 years and over who had a wide range of breast sizes. Read More

    Increased movement variability in one-leg hops about 20 years after treatment of anterior cruciate ligament injury.
    Clin Biomech (Bristol, Avon) 2018 Feb 6;53:37-45. Epub 2018 Feb 6.
    Dept. of Community Medicine and Rehabilitation, Physiotherapy, Umeå University, Sweden.
    Background: Recent studies highlight the need for understanding movement control of adjacent joints when evaluating knee function following anterior cruciate ligament (ACL) injury. However, while short-term adaptations to lower-extremity joint coupling have been studied, little is known about any potential long-term adaptations in neuromuscular control displayed by ACL-injured individuals. The aim of our study was to determine whether coordination variability of the hip-knee joint couplings during the one-leg hop is altered about 20 years after injury in two ACL-injured groups compared to healthy knee controls. Read More

    Changes in patellofemoral pain resulting from repetitive impact landings are associated with the magnitude and rate of patellofemoral joint loading.
    Clin Biomech (Bristol, Avon) 2018 Feb 7;53:31-36. Epub 2018 Feb 7.
    Division of Biokinesiology & Physical Therapy, University of Southern California, Los Angeles, CA, USA. Electronic address:
    Background: Although a relationship between elevated patellofemoral forces and pain has been proposed, it is unknown which joint loading variable (magnitude, rate) is best associated with pain changes. The purpose of this study was to examine associations among patellofemoral joint loading variables and changes in patellofemoral pain across repeated single limb landings.

    Methods: Thirty-one females (age: 23. Read More

    A method for characterizing essential tremor from the shoulder to the wrist.
    Clin Biomech (Bristol, Avon) 2018 Jan 3;52:117-123. Epub 2018 Jan 3.
    Department of Mechanical Engineering, Brigham Young University, 435 CTB, Provo, UT 84602, United States; Neuroscience Center, Brigham Young University, S-192 ESC, Provo, UT 84602, United States. Electronic address:
    Background: Despite the pervasive and devastating effect of Essential Tremor (ET), the distribution of ET throughout the upper limb is unknown. We developed a method for characterizing the distribution of ET and performed a preliminary characterization in a small number of subjects with ET.

    Methods: Using orientation sensors and inverse kinematics, we measured tremor in each of the seven major degrees of freedom (DOF) from the shoulder to the wrist while ten patients with mild ET assumed 16 different postures. Read More

    The influence of internal and external tibial rotation offsets on knee joint and ligament biomechanics during simulated athletic tasks.
    Clin Biomech (Bristol, Avon) 2018 Feb 2;52:109-116. Epub 2018 Feb 2.
    Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA; Department of Biomedical Engineering and Physiology, Mayo Clinic, Rochester, MN, USA; Sports Medicine Center, Mayo Clinic, Rochester, MN, USA; Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN, USA.
    Background: Following anterior cruciate ligament injury and subsequent reconstruction transverse plane tibiofemoral rotation becomes underconstrained and overconstrained, respectively. Conflicting reports exist on how rotations influence loading at the knee. This investigation aimed to determine the mechanical effects of internal and external tibial rotation offsets on knee kinematics and ligament strains during in vitro simulations of in vivo recorded kinematics. Read More

    Local bone quality measurements correlates with maximum screw torque at the femoral diaphysis.
    Clin Biomech (Bristol, Avon) 2018 Feb 2;52:95-99. Epub 2018 Feb 2.
    Department of Orthopaedic Surgery, Washington University in St. Louis, MO, USA; Department of Biomedical Engineering, Washington University in St. Louis, MO, USA; Department of Mechanical Engineering and Materials Science, Washington University in St. Louis, MO, USA. Electronic address:
    Background: Successful fracture fixation depends critically on the stability of the screw-bone interface. Maximum achievable screw torque reflects the competence of this interface, but it cannot be quantified prior to screw stripping. Typically, the surgeon relies on the patients' bone mineral density and radiographs, along with experience and tactile feedback to assess whether sufficient compression can be generated by the screw and bone. Read More

    Biomechanics of a cemented short stem: Standard vs. line-to-line cementation techniques. A biomechanical in-vitro study involving six osteoporotic pairs of human cadaver femurs.
    Clin Biomech (Bristol, Avon) 2018 Jan 24;52:86-94. Epub 2018 Jan 24.
    Institute of Orthopaedic Research and Biomechanics, Trauma Research Centre Ulm, Ulm University - Medical Centre, Helmholtzstr. 14, 89081 Ulm, Germany. Electronic address:
    Background: Short-stem total hip arthroplasty (THA) potentially offers advantages compared to conventional THA, including sparing bone and soft tissue and being a facilitated and less traumatic implantation. However, the indication is limited to patients with sufficient bone quality. Cemented short-stem THA might provide an alternative to conventional cemented THA. Read More

    The effects of body weight unloading on kinetics and muscle activity of overweight males during Overground walking.
    Clin Biomech (Bristol, Avon) 2018 Jan 24;52:80-85. Epub 2018 Jan 24.
    Department of Mechanical Engineering, Technion-Israel Institute of Technology, Haifa, Israel.
    Background: Excess body weight has become a major worldwide health and social epidemic. Training with body weight unloading, is a common method for gait corrections for various neuromuscular impairments. In the present study we assessed the effects of body weight unloading on knee and ankle kinetics and muscle activation of overweight subjects walking overground under various levels of body weight unloading. Read More

    Answer to Hu Hai on the letter to the editor about the article "Movement of the Sacroiliac Joint during the Active Straight Leg Raise test in patients with long lasting severe sacroiliac joint pain".
    Clin Biomech (Bristol, Avon) 2018 Feb 1;52:79. Epub 2018 Feb 1.
    Division of Orthopaedic Surgery, Oslo University Hospital, Oslo, Norway and Institute of Clinical Medicine, University of Oslo, Norway. Electronic address:

    Biomechanical evaluation of pyrocarbon proximal interphalangeal joint arthroplasty: An in-vitro analysis.
    Clin Biomech (Bristol, Avon) 2018 Jan 23;52:72-78. Epub 2018 Jan 23.
    Orthopaedics Department, Coimbra University Hospital, Portugal.
    Background: Pyrocarbon proximal interphalangeal joint arthroplasty provided patients with excellent pain relief and joint motion, however, overall implant complications have been very variable, with some good outcomes at short-medium-term follow-up and some bad outcomes at longer-term follow-up. Implant loosening with migration, dislocation and implant fracture were the main reported clinical complications. The aim of the present work was to test the hypothesis that the magnitude proximal interphalangeal joint cyclic loads in daily hand functions generates stress-strain behaviour which may be associated with a risk of pyrocarbon component loosening in the long-term. Read More

    An index to quantify deviations from normal trunk mobility: Clinical correlation and initial test of validity.
    Clin Biomech (Bristol, Avon) 2018 Jan 24;52:66-71. Epub 2018 Jan 24.
    Laboratoire d'Automatique, de Mécanique et d'Informatique Industrielles et Humaines, Université du Hainaut Cambrésis, 59313 Valenciennes, France.
    Background: In case of people suffering from chronic low back pain, specific movements of the hip, pelvis, and trunk are associated with pain. Comparing range of motion measurements for multiple planes and from different segments and lines in reference to those of healthy individuals seems interesting but present interpretations challenge in relation to important number of variables and correlation with clinical data.

    Methods: The proposed index is based on using principal component analysis to quantify differences in trunk mobility between patients with chronic low back pain and a control group. Read More

    Biomechanical and physiological age differences in a simulated forward fall on outstretched hands in women.
    Clin Biomech (Bristol, Avon) 2018 Jan 27;52:102-108. Epub 2018 Jan 27.
    School of Physical Therapy, College of Medicine, Suite 3400, 104 Clinic Place, University of Saskatchewan, Saskatoon, SK S7N 2Z4, Canada. Electronic address:
    Background: Falling on the outstretched hands, a protective mechanism to arrest the body and avoid injury, requires upper limb and trunk motor control for effective body descent. Older women are particularly susceptible to injury from a forward fall, but the biomechanical and physiological (e.g. Read More

    "Movement of the sacroiliac joint during the active straight leg raise test in patients with long-lasting severe sacroiliac joint pain"-A letter to the editor.
    Clin Biomech (Bristol, Avon) 2018 Jan 27;52:100-101. Epub 2018 Jan 27.
    Department of Human Movement Sciences, Vrije Universiteit, Amsterdam, The Netherlands; Orthopaedic Biomechanics Laboratory, Fujian Medical University, Quanzhou, Fujian, PR China.

    Scapular kinematics in professional wheelchair tennis players.
    Clin Biomech (Bristol, Avon) 2018 Jan 29;53:7-13. Epub 2018 Jan 29.
    Nottingham University Hospitals, Nottingham, UK; Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, UK.
    Background: Participating in wheelchair tennis increases the demands placed on the shoulder and could increase the risk of developing shoulder pain and injury that might be associated with differences in scapular kinematics. The aim of the study was to examine the presence of shoulder pain and scapular kinematics in professional wheelchair tennis players.

    Method: Scapular kinematics were obtained in 11 professional wheelchair tennis players, 16 people with shoulder impingement and 16 people without shoulder impingement during humeral elevation and lowering. Read More

    The relationship between balance performance, lumbar extension strength, trunk extension endurance, and pain in participants with chronic low back pain, and those without.
    Clin Biomech (Bristol, Avon) 2018 Jan 31;53:22-30. Epub 2018 Jan 31.
    School of Sport, Health, and Social Sciences, Southampton Solent University, Southampton, UK. Electronic address:
    Background: Chronic low back pain is associated with lumbar extensor deconditioning. This may contribute to decreased neuromuscular control and balance. However, balance is also influenced by the hip musculature. Read More

    Superior cortical screw in osteoporotic lumbar vertebrae: A biomechanics and microstructure-based study.
    Clin Biomech (Bristol, Avon) 2018 Jan 31;53:14-21. Epub 2018 Jan 31.
    Department of Orthopedics, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, No. 3, Qingchun Road East, Hangzhou 310016, PR China. Electronic address:
    Background: Osteoporosis reduces the bone-screw purchase, potentially reducing pullout strength and other biomechanical properties. However, the existing pedicle screw approach may not compensate for the detrimental effects of decreased vertebral bone mineral density.

    Methods: Two methods of screw insertion were performed in thirteen cadaveric osteoporotic lumbar vertebrae: Magerl's method in the left pedicle, and superior cortical screw method in the right (its entry point located vertically 3 mm above Magerl's point). Read More

    In vivo study of paraspinal muscle weakness using botulinum toxin in one primate model.
    Clin Biomech (Bristol, Avon) 2018 Jan 29;53:1-6. Epub 2018 Jan 29.
    National Primate Research Center, Korea Research Institute of Bioscience and Biotechnology, Cheongju, Republic of Korea; Department of Functional Genomics, University of Science and Technology, Daejeon, Republic of Korea. Electronic address:
    Background: It has been generally speculated that paraspinal muscle weakness is related to the spinal degeneration including intervertebral disc failure. The purpose of this study was to investigate the effects of paraspinal muscle weakness induced by the botulinum toxin type-A on the lumbar spine and behavior pattern in an in-vivo primate model which has an upright locomotion similar to that of humans.

    Methods: Botox injections into paraspinal muscle of one cynomolgus monkey were conducted biweekly up to 19 weeks at L2-L3, L3-L4 and L4-L5. Read More

    Regional flow and deposition variability in adult female lungs: A numerical simulation pilot study.
    Clin Biomech (Bristol, Avon) 2018 Jan 27. Epub 2018 Jan 27.
    Department of Bioengineering, Northeastern University, USA. Electronic address:
    Background: Despite the promise of respiratory simulations improving diagnosis and treatment of pulmonary diseases, model predictions have yet to be translated into the clinical setting. Current state-of-the-art in silico models have not yet incorporated subject variability in their predictions of airflow distributions and extent of deposited particles. Until inter-subject variability is accounted for in lung modeling, it will remain impossible to translate model predictions into clinical practice. Read More

    Multi-scale modeling of an upper respiratory airway: Effect of mucosal adhesion on Eustachian tube function in young children.
    Clin Biomech (Bristol, Avon) 2018 Jan 27. Epub 2018 Jan 27.
    Department of Biomedical Engineering, College of Engineering, The Ohio State University, Columbus, OH 43210, United States; Dorothy M. Davis Heart and Lung Research Institute, College of Medicine and Wexner Medical Center, The Ohio State University, Columbus, OH 43210, United States; Department of Internal Medicine (Division of Pulmonary, Critical Care and Sleep Medicine), Wexner Medical Center, The Ohio State University, Columbus, OH 43210, United States. Electronic address:
    Background: The Eustachian tube is a collapsible upper respiratory airway that is periodically opened to maintain a healthy middle ear. Young children, <10 years old, exhibit reduced Eustachian tube opening efficiency and are at risk for developing middle ear infections. Although these infections increase mucosal adhesion, it is not known how adhesion forces alters the biomechanics of Eustachian tube opening in young children. Read More

    Heterogeneous structure and surface tension effects on mechanical response in pulmonary acinus: A finite element analysis.
    Clin Biomech (Bristol, Avon) 2018 Jan 20. Epub 2018 Jan 20.
    Graduate School of Engineering Science, Osaka University, Japan.
    Background: The pulmonary acinus is a dead-end microstructure that consists of ducts and alveoli. High-resolution micro-CT imaging has recently provided detailed anatomical information of a complete in vivo acinus, but relating its mechanical response with its detailed acinar structure remains challenging. This study aimed to investigate the mechanical response of acinar tissue in a whole acinus for static inflation using computational approaches. Read More

    Achievable accuracy of hip screw holding power estimation by insertion torque measurement.
    Clin Biomech (Bristol, Avon) 2018 Jan 19;52:57-65. Epub 2018 Jan 19.
    Laboratorio di Tecnologia Medica, Istituto Ortopedico Rizzoli, Italy. Electronic address:
    Background: To ensure stability of proximal femoral fractures, the hip screw must firmly engage into the femoral head. Some studies suggested that screw holding power into trabecular bone could be evaluated, intraoperatively, through measurement of screw insertion torque. However, those studies used synthetic bone, instead of trabecular bone, as host material or they did not evaluate accuracy of predictions. Read More

    Analysis of the elastic bending characteristics of cementless short hip stems considering the valgus alignment of the prosthetic stem.
    Clin Biomech (Bristol, Avon) 2018 Jan 19;52:49-56. Epub 2018 Jan 19.
    Laboratory of Biomechanics, Justus-Liebig-University Giessen, Klinikstrasse 29, 35392 Giessen, Germany; Department of Orthopaedics and Orthopaedic Surgery, University Hospital Giessen and Marburg (UKGM), Klinikstrasse 33, 35392 Giessen, Germany.
    Background: The resultant hip force causes a varus torque which must be compensated by a shear force couple depending on the stem alignment of the prosthesis. Since the prosthesis is substantially less flexible than the bone, the interior of the femur is stiffened over the entire prosthesis length. The present study thus aims at analyzing short-stem prostheses for its elastic bending characteristics, considering inappropriate valgus alignment of the prosthetic stem. Read More

    Biodegradable spacer reduces the subacromial pressure: A biomechanical cadaver study.
    Clin Biomech (Bristol, Avon) 2017 Dec 18;52:41-48. Epub 2017 Dec 18.
    Department of Orthopedic Surgery, Physical Medicine and Rehabilitation, University Hospital of Munich, Germany.
    Background: Failure after rotator cuff repair remains a major clinical problem and could be related to excessive pressures from the acromion. Previous studies with irreparable tears showed good clinical results of tendon healing with arthroscopic insertion of a protective biodegradable spacer balloon between the repaired tendon and the acromion. One hypothesis is that compression pressures on the repaired tendon will be reduced by the spacer. Read More

    Different ways to balance the spine in sitting: Muscle activity in specific postures differs between individuals with and without a history of back pain in sitting.
    Clin Biomech (Bristol, Avon) 2018 Jan 10;52:25-32. Epub 2018 Jan 10.
    University of Queensland, Centre of Clinical Research Excellence in Spinal Pain, Injury & Health, School of Health & Rehabilitation Sciences, Brisbane, QLD 4072, Australia. Electronic address:
    Background: Previous research explored muscle activity in four distinct sitting postures with fine-wire electromyography, and found that lumbar multifidus muscle activity increased incrementally between sitting with flat thoracolumbar and lumbar regions, long thoracolumbar lordosis, or short lordosis confined to the lumbar region. This study used similar methods to explore whether people with a history of low back pain provoked by prolonged sitting used different patterns of trunk muscle activity in specific postures.

    Methods: Fine-wire electromyography electrodes were inserted into the right lumbar multifidus (deep and superficial), iliocostalis (lateral and medial), longissimus thoracis and transversus abdominis muscles. Read More

    Integrated lung tissue mechanics one piece at a time: Computational modeling across the scales of biology.
    Clin Biomech (Bristol, Avon) 2018 Jan 12. Epub 2018 Jan 12.
    Auckland Bioengineering Institute, University of Auckland, 70 Symonds Street, Auckland 1010, New Zealand. Electronic address:
    The lung is a delicately balanced and highly integrated mechanical system. Lung tissue is continuously exposed to the environment via the air we breathe, making it susceptible to damage. As a consequence, respiratory diseases present a huge burden on society and their prevalence continues to rise. Read More

    De novo generation in an in vivo rat model and biomechanical characterization of autologous transplants for ligament and tendon reconstruction.
    Clin Biomech (Bristol, Avon) 2017 Dec 14;52:33-40. Epub 2017 Dec 14.
    Laboratoire d'Etude de la Microcirculation, Faculté de Médecine Diderot Paris VII, U942, Paris, France.
    Background: Surgical reconstruction of ligaments and tendons is frequently required in clinical practice. The commonly used autografts, allografts, or synthetic transplants present limitations in terms of availability, biocompatibility, cost, and mechanical properties that tissue bioengineering aims to overcome. It classically combines an exogenous extracellular matrix with cells, but this approach remains complex and expensive. Read More

    Numerical simulation of hemodynamics in membranous obstruction of the suprahepatic inferior vena cava based on a subject-specific Budd-Chiari syndrome model.
    Clin Biomech (Bristol, Avon) 2018 Jan 2;52:20-24. Epub 2018 Jan 2.
    School of Medical Imaging, Xuzhou Medical University, 84West Huai-hai Road, Xuzhou 221004, China.
    Background: This study was performed to determine the hemodynamic changes of Budd-Chiari syndrome when the inferior vena vein membrane is developing.

    Methods: A patient-specific Budd-Chiari syndrome vascular model was reconstructed based on magnetic resonance images using Mimics software and different degrees (16%, 37%, and 54%) of idealized membrane were built based on the Budd-Chiari syndrome vascular model using Geomagic software. Three membrane obstruction Budd-Chiari syndrome vascular models were established successfully and fluent software was used to simulate hemodynamic parameters, including blood velocity and wall shear stress. Read More

    The quantity of bone cement influences the anchorage of augmented pedicle screws in the osteoporotic spine: A biomechanical human cadaveric study.
    Clin Biomech (Bristol, Avon) 2017 Dec 29;52:14-19. Epub 2017 Dec 29.
    University of Aachen Medical Center, Department of Orthopaedic Trauma, Pauwelsstraße 30, 52074 Aachen, Germany. Electronic address:
    Background: The aim of this comparative biomechanical human cadaveric study was to investigate the anchorage of augmented screws with two different volumes of bone cement. For this purpose the effect of cranio-caudal loadings on pedicle screws was evaluated and axial pullout tests were performed.

    Methods: A total of 50 pedicle screws (25 augmented/25 non-augmented) were instrumented into osteoporotic vertebra of fresh human cadavers. Read More

    Quantification of upper limb electromyographic measures and dysfunction of breast cancer survivors during performance of functional dynamic tasks.
    Clin Biomech (Bristol, Avon) 2017 Dec 29;52:7-13. Epub 2017 Dec 29.
    Department of Kinesiology, University of Waterloo, 200 University Avenue W, Waterloo, ON N2L 3G1, Canada. Electronic address:
    Background: Upper limb morbidities within the breast cancer population can interfere with completing daily life activities. Current knowledge of upper limb capabilities is limited; previous increases in muscle activation on the affected cancer side suggest this population works at a higher fraction of their capability. The purposes of this study were to describe upper limb capabilities and dysfunction of breast cancer survivors through muscle activation monitoring via surface electromyography and muscle-specific strength tests during functional tasks. Read More

    Relationship between body composition and postural control in prepubertal overweight/obese children: A cross-sectional study.
    Clin Biomech (Bristol, Avon) 2017 Dec 21;52:1-6. Epub 2017 Dec 21.
    Departamento de Didáctica de la Expresión Musical, Plástica y Corporal, Universidad de Valencia, Valencia, Spain. Electronic address:
    Background: Excess body weight during childhood causes reduced motor functionality and problems in postural control, a negative influence which has been reported in the literature. Nevertheless, no information regarding the effect of body composition on the postural control of overweight and obese children is available. The objective of this study was therefore to establish these relationships. Read More

    Upper torso pain and musculoskeletal structure and function in women with and without large breasts: A cross sectional study.
    Clin Biomech (Bristol, Avon) 2018 Jan 21;51:99-104. Epub 2017 Dec 21.
    Biomechanics Research Laboratory, University of Wollongong, NSW, Australia.
    Background: Women with large breasts frequently experience upper torso pain secondary to their breast size. Evidence is lacking on the underlying causes of this pain. This study investigated whether upper torso pain and musculoskeletal structure and function differed between women with large breasts and women with small breasts. Read More

    Are we simplifying balance evaluation in adolescent idiopathic scoliosis?
    Clin Biomech (Bristol, Avon) 2018 Jan 29;51:91-98. Epub 2017 Nov 29.
    Division of Orthopaedic Surgery, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA 19104, United States.
    Background: Clinical evaluation of the postural balance in adolescent idiopathic scoliosis has been measured by sagittal vertical axis and frontal balance. The impact of the scoliotic deformity in three planes on balance has not been fully investigated.

    Methods: 47 right thoracic and left lumbar curves adolescent idiopathic scoliosis and 10 non-scoliotic controls were registered prospectively. Read More

    Transmissibility and waveform purity of whole-body vibrations in older adults.
    Clin Biomech (Bristol, Avon) 2018 Jan 15;51:82-90. Epub 2017 Dec 15.
    Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong.
    Background: This study examined the transmission power and waveform purity of vertical (synchronous) whole-body vibrations upon its propagation in the human body among older adults.

    Methods: Forty community-dwelling older adults participated in the study (33 women; mean age: 60.3 (SD 5. Read More

    Scapular-focused exercise treatment protocol for shoulder impingement symptoms: Three-dimensional scapular kinematics analysis.
    Clin Biomech (Bristol, Avon) 2018 Jan 11;51:76-81. Epub 2017 Dec 11.
    University of São Paulo, School of Medicine of Ribeirao Preto, Department of Biomechanics, Medicine and Rehabilitation of the Locomotor Apparatus, Ribeirão Preto, SP, Brazil. Electronic address:
    Background: The present study aimed to describe the effects of a periscapular strengthening and neuromuscular training protocol in three-dimensional scapular kinematics and resting positioning in participants with shoulder impingement symptoms. Self-reported function was also evaluated.

    Method: The study group comprised 50 subjects with shoulder impingement syndrome (control group, n=25; treatment group, n=25). Read More

    Development of an orthosis for simultaneous three-dimensional correction of clubfoot deformity.
    Clin Biomech (Bristol, Avon) 2018 Jan 6;51:67-75. Epub 2017 Dec 6.
    Centre for Biomedical Engineering, Indian Institute of Technology Delhi, New Delhi, India; All India Institute of Medical Sciences, New Delhi, India.
    Background: Clubfoot is a three-dimensional deformity of the foot in which the foot is twisted in three mutually perpendicular planes from the normal shape of the foot. Of the various treatment methods that are available to manage clubfoot, non-operative approaches are preferred. The conventional non-operative method of treatment is to apply a series of casts to the infant's clubfoot to gradually manipulate its position. Read More

    A subject-specific biomechanical control model for the prediction of cervical spine muscle forces.
    Clin Biomech (Bristol, Avon) 2018 Jan 6;51:58-66. Epub 2017 Dec 6.
    Arts et Metiers ParisTech, Institut de Biomecanique Humaine Georges Charpak, 151 bd de l'Hopital, 75013 Paris, France.
    Background: The aim of the present study is to propose a subject-specific biomechanical control model for the estimation of active cervical spine muscle forces.

    Methods: The proprioception-based regulation model developed by Pomero et al. (2004) for the lumbar spine was adapted to the cervical spine. Read More

    Revisiting high-frequency oscillatory ventilation in vitro and in silico in neonatal conductive airways.
    Clin Biomech (Bristol, Avon) 2017 Nov 28. Epub 2017 Nov 28.
    Department of Biomedical Engineering, Technion - Israel Institute of Technology, Haifa 32000, Israel. Electronic address:
    Background: High frequency oscillatory ventilation is often used for lung support in premature neonates suffering from respiratory distress syndrome. Despite its broad use in neonatal intensive care units, there are to date no accepted protocols for the choice of appropriate ventilation parameter settings. In this context, the underlying mass transport mechanisms are still not fully understood. Read More

    Variation inflation factor-based regression modeling of anthropometric measures and temporal-spatial performance: Modeling approach and implications for clinical utility.
    Clin Biomech (Bristol, Avon) 2018 Jan 21;51:51-57. Epub 2017 Nov 21.
    Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH 45229, USA.
    Background: Understanding the relationship of underlying anthropometry to temporal-spatial performance is critical to appropriate assessment of patients with ambulatory dysfunction. The current body of literature has established the importance of limb length in this relationship. This study sought to re-examine these relationships in light of recent trends in body habitus and obesity, using Variation Inflation Factor analysis to optimize the model. Read More

    Validation of the Arm Profile Score in assessing upper limb functional impairments in people with multiple sclerosis.
    Clin Biomech (Bristol, Avon) 2018 Jan 22;51:45-50. Epub 2017 Nov 22.
    LaRiCE: Gait and Balance Disorders Laboratory, Department of Neurorehabilitation, Foundation Don C. Gnocchi Onlus, IRCSS, Via Capecelatro 66, 20148 Milan, Italy.
    Background: Although upper limb (UL) impairments are widespread in people with Multiple Sclerosis (pwMS), there is limited quantitative evidence concerning their specific features. The aim of this study is to validate a synthetic measure based on kinematic data to define the degree of deviation from a physiologic pattern during the "hand to mouth" (HTM) task.

    Methods: Twenty pwMS (mean age 51. Read More

    Lower limb muscle volume estimation from maximum cross-sectional area and muscle length in cerebral palsy and typically developing individuals.
    Clin Biomech (Bristol, Avon) 2018 Jan 14;51:40-44. Epub 2017 Nov 14.
    One Small Step Gait Laboratory, Evelina London Children's Hospital, Guy's and St Thomas' NHS Foundation Trust, Guy's Hospital, London SE1 9RT, United Kingdom; School of Biomedical Engineering and Imaging Sciences, King's College London, The Rayne Institute, 4th Floor, Lambeth Wing, St Thomas' Hospital, London SE1 7EH, United Kingdom. Electronic address:
    Background: Deficits in muscle volume may be a significant contributor to physical disability in young people with cerebral palsy. However, 3D measurements of muscle volume using MRI or 3D ultrasound may be difficult to make routinely in the clinic. We wished to establish whether accurate estimates of muscle volume could be made from a combination of anatomical cross-sectional area and length measurements in samples of typically developing young people and young people with bilateral cerebral palsy. Read More

    Effect of minimally-invasive implantation of unicompartmental knee arthroplasty on cement penetration and biomechanical stability. An experimental study in human tibiae.
    Clin Biomech (Bristol, Avon) 2018 Jan 16;51:34-39. Epub 2017 Nov 16.
    Ludwig Maximilians University Clinic for Orthopaedic Surgery, Campus Grosshadern, Marchioninistr. 15, 81377 Munich, Germany.

    Correlation of high flow nasal cannula outlet area with gas clearance and pressure in adult upper airway replicas.
    Clin Biomech (Bristol, Avon) 2017 Nov 11. Epub 2017 Nov 11.
    Department of Mechanical Engineering, University of Alberta, Edmonton, AB, Canada. Electronic address:
    Background: Primary benefits of high flow nasal cannula therapy include washout of carbon dioxide rich exhaled gas and increased airway pressures during tidal breathing. This work reports on the influence of high flow nasal cannula outlet area on upper airways gas clearance and tracheal pressures using measurements in five realistic adult nose-throat airway replicas.

    Methods: Two commercial high flow nasal cannulas and one generic nasal cannula of varying size were compared. Read More

    Airway morphology and inspiratory flow features in the early stages of Chronic Obstructive Pulmonary Disease.
    Clin Biomech (Bristol, Avon) 2017 Nov 16. Epub 2017 Nov 16.
    Department of Aerospace Engineering & Mechanics, University of Minnesota, Minneapolis, MN, USA. Electronic address:
    Background: Chronic Obstructive Pulmonary Disease (COPD) is among the leading causes of death worldwide. Inhaled pollutants are the prime risk factor, but the pathogenesis and progression of the diseased is poorly understood. Most studies on the disease onset and trajectory have focused on genetic and molecular biomarkers. Read More

    3D correction over 2years with anterior vertebral body growth modulation: A finite element analysis of screw positioning, cable tensioning and postoperative functional activities.
    Clin Biomech (Bristol, Avon) 2018 Jan 16;51:26-33. Epub 2017 Nov 16.
    Department of Mechanical Engineering, Polytechnique Montréal, P.O. Box 6079, Downtown Station, Montreal, Quebec H3C 3A7, Canada; Research Center, Sainte-Justine University Hospital Center, 3175 Côte-Sainte-Catherine Road, Montreal, Quebec H3T 1C5, Canada. Electronic address:
    Background: Anterior vertebral body growth modulation is a fusionless instrumentation to correct scoliosis using growth modulation. The objective was to biomechanically assess effects of cable tensioning, screw positioning and post-operative position on tridimensional correction.

    Methods: The design of experiments included two variables: cable tensioning (150/200N) and screw positioning (lateral/anterior/triangulated), computationally tested on 10 scoliotic cases using a personalized finite element model to simulate spinal instrumentation, and 2years growth modulation with the device. Read More

    An innovative lung model for multiple breath washout testing in health and disease.
    Clin Biomech (Bristol, Avon) 2017 Nov 10. Epub 2017 Nov 10.
    ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland.
    Background: Multiple breath washout (MBW) is a lung function test that identifies the degree of ventilation inhomogeneity (VI) in the lungs. In vitro validation of MBW devices is recommended. So far, plastic lung models for MBW validation ignored variable degrees of VI. Read More

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