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Elizabeth Wellsandt, Ashutosh Khandha, Kurt Manal, Michael J Axe, Thomas S Buchanan, Lynn Snyder-Mackler
Anterior cruciate ligament (ACL) injury results in altered knee joint mechanics which frequently continue even after ACL reconstruction. The persistence of altered mechanical loading of the knee is of concern due to its likely role in the development of post-traumatic osteoarthritis (OA). Joint contact forces are associated with post-traumatic OA development, but evaluation of factors influencing the magnitude of contact forces after ACL injury is needed to advance current strategies aimed at preventing post-traumatic OA...
October 17, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
Gabrielle Martel, Charles-André Couture, Guillaume Gilbert, Stéphane Bancelin, Hélène Richard, Thomas Moser, Sabrina Kiss, François Légaré, Sheila Laverty
Osteochondrosis is an ischemic chondronecrosis of epiphyseal growth cartilage that results in focal failure of endochondral ossification and osteochondritis dissecans at specific sites in the epiphyses of humans and animals, including horses. The upstream events leading to the focal ischemia remain unknown. The epiphyseal growth cartilage matrix is composed of proteoglycan and collagen macromolecules and encases its vascular tree in canals. The matrix undergoes major dynamic changes in early life that could weaken it biomechanically and predispose it to focal trauma and vascular failure...
October 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
Remko van Lieshout, Mirelle J Stukstette, Rob A de Bie, Benedicte Vanwanseele, Martijn F Pisters
Study Design Controlled laboratory study to assess criterion-related validity, with a cross-sectional within-subject design. Background Patients with orthopaedic conditions have difficulties complying with partial weight-bearing instructions. Technological advances have resulted in biofeedback devices that offer real-time feedback. However, the accuracy of these devices is mostly unknown. Inaccurate feedback can result in incorrect lower-limb loading and may lead to delayed healing. Objectives To investigate validity of peak force measurements obtained using 3 different biofeedback devices under varying levels of partial weight-bearing categories...
October 12, 2016: Journal of Orthopaedic and Sports Physical Therapy
Gulcan Harput, Jennifer Sebert Howard, Carl Mattacola
Study Design Cross-sectional, controlled laboratory study. Background Quantification of muscular activation during different phases of functional activities is important to understand activation deficits in individuals who have undergone anterior cruciate ligament reconstruction (ACLR). Objectives To compare activation levels of vastus medialis (VM), medial hamstrings (MH) and gluteus medius (GMed) muscles during the different phases of weight bearing tasks between individuals who had undergone ACLR and healthy controls...
October 12, 2016: Journal of Orthopaedic and Sports Physical Therapy
D Mark Courtney
The primary goal of this editorial is to discuss the care patients typically receive in the immediate post-motor vehicle collision setting and the questions patients typically ask with respect to their symptoms and prognosis. Commentary and guidance are provided from the perspective of an acute care physician on what we should be able to tell patients and providers going forward. J Orthop Sports Phys Ther 2016;46(10):822-825. doi:10.2519/jospt.2016.0114.
October 2016: Journal of Orthopaedic and Sports Physical Therapy
Gwendolen Jull
There have been many advances in the management of neck pain disorders, but a personal frustration as a clinician and researcher in the field is that the incidence of full recovery following a whiplash injury as a result of a motor vehicle crash has not increased and, subsequently, the rate of transition to chronic neck pain has not lessened. The commentaries in this special issue reflect the multifaceted nature of whiplash-associated disorders and the wide-ranging research in the field. While management of whiplash, especially the challenge of lessening the rate of transition to chronicity, has yet to be achieved, the picture is becoming clearer...
October 2016: Journal of Orthopaedic and Sports Physical Therapy
Karen Bowman, Robyn D Robertson
In the past decade, distracted driving has emerged as one of the most prominent global road safety concerns. The singular and combined efforts of many organizations, such as Drop It And Drive (DIAD) and the Traffic Injury Research Foundation (TIRF), have identified the need for partnerships, shared information, and access to interpretable research findings to guide decision making and to identify effective strategies to reduce, if not eliminate, preventable injuries/fatalities from distracted driving, including whiplash-associated disorders...
October 2016: Journal of Orthopaedic and Sports Physical Therapy
Brian D Stemper, Brian D Corner
Synopsis Despite considerable research effort, the incidence of whiplash injury during automotive collisions has continued to rise. This is due, at least in part, to a limited recognition of biomechanical injury mechanisms and factors influencing injury risk. While automotive safety modifications reduced injury risk in some cases, impact on the overall whiplash incidence was limited. This is likely attributable to significant occupant-related differences that have a profound impact on injury risk. Many of those differences were outlined in research studies, and examples include female sex and the associated sex-based anthropometrical variation that can affect seating orientation; cervical spinal posture; and anatomical attributes, including cervical column slenderness and neck muscle morphometry...
October 2016: Journal of Orthopaedic and Sports Physical Therapy
Joshua P Halfpap, Aaron A Cho, Michael D Rosenthal
A 51-year-old man presented to a direct-access physical therapy clinic with persistent neck pain for 5 days after a fall in shallow water while surfing. Based on "dangerous mechanism of injury" from the Canadian cervical spine rule as being a high risk factor, the physical therapist ordered radiographs of the cervical spine, which were suggestive of a more serious injury. Computed tomography suggested and magnetic resonance imaging confirmed vertebral artery dissection. J Orthop Sports Phys Ther 2016;46(10):929...
October 2016: Journal of Orthopaedic and Sports Physical Therapy
James M Elliott, Sudarshan Dayanidhi, Charles Hazle, Mark A Hoggarth, Jacob McPherson, Cheryl L Sparks, Kenneth A Weber
Synopsis It is generally accepted that up to 50% of those with a whiplash injury following a motor vehicle collision will fail to fully recover. Twenty-five percent of these patients will demonstrate a markedly complex clinical picture that includes severe pain-related disability, sensory and motor disturbances, and psychological distress. A number of psychosocial factors have shown prognostic value for recovery following whiplash from a motor vehicle collision. To date, no management approach (eg, physical therapies, education, psychological interventions, or interdisciplinary strategies) for acute whiplash has positively influenced recovery rates...
October 2016: Journal of Orthopaedic and Sports Physical Therapy
Sarah D Linnstaedt, Kyle D Riker, Margaret G Walker, Jennifer E Nyland, Erin Zimny, Christopher Lewandowski, Phyllis L Hendry, Kathia Damiron, Claire Pearson, Marc-Anthony Velilla, Jeffrey Jones, Robert A Swor, Robert Domeier, Samuel A McLean
Study Design Prospective human cohort study combined with molecular studies. Background A microRNA is a small, noncoding RNA molecule that can play a role in disease onset. Recent studies found that circulating levels of microRNA 320a (miR-320a) are associated with musculoskeletal pain conditions and that miR-320a is stress responsive. Objectives To investigate whether circulating expression levels of miR-320a in the peritraumatic period predict persistent axial musculoskeletal pain 6 months after motor vehicle collision (MVC)...
October 2016: Journal of Orthopaedic and Sports Physical Therapy
Benjamin S Elkin, James M Elliott, Gunter P Siegmund
Study Design Finite element modeling of experimental data. Background The clinical presentations of whiplash injury and concussion have considerable overlap. Both diagnoses are generally based on presenting signs and symptoms, and a history of neck or head trauma. With incomplete knowledge of the trauma, differentiating between whiplash injury and concussion can be clinically challenging. Objectives To estimate the brain strains that develop during rear-end car crashes, evaluate how these strains vary with different head kinematic parameters, and compare these strains to those generated during potentially concussive football helmet impacts...
October 2016: Journal of Orthopaedic and Sports Physical Therapy
Mark Riebel, Richard Westrick, Donald Goss
A 24-year-old male Marine presented to a direct-access physical therapy clinic with a chief complaint of bilateral hand paresthesia secondary to a parachuting accident when his neck was forced into lateral flexion. Due to the positive neurologic findings and history of trauma, the physical therapist ordered cervical spine imaging. The odontoid was not adequately visualized on radiographs, but computed tomography revealed an os odontoideum. J Orthop Sports Phys Ther 2016;46(10):930. doi:10.2519/jospt.2016.0417...
October 2016: Journal of Orthopaedic and Sports Physical Therapy
Daniel Camara Azevedo, Edson Barreto Paiva, Alexia Moura Abuhid Lopes, Henrique de Oliveira Santos, Ricardo Luiz Carneiro, André Soares Rodrigues, Marco Antonio Percope de Andrade, Eduardo N Novais, Linda R Van Dillen
Study Design Cross-sectional, case-control design. Background Pelvic movement has been considered a possible discriminating parameter associated with FAI symptom onset. Decreased pelvic rotation has been found during squatting in people with FAI when compared to hip-healthy people. However, it is possible that changes in pelvic movement may occur in other hip conditions because of pain and may not be specific to FAI. Objectives To compare sagittal pelvic rotation during hip flexion and in sitting between people with Femoroacetabular Impingement (FAI) and people with other symptomatic hip conditions...
September 29, 2016: Journal of Orthopaedic and Sports Physical Therapy
Alon Rabin, Sigal Portnoy, Zvi Kozol
Study Design Cross-sectional. Background Altered hip and knee kinematics have been associated with several knee disorders including anterior cruciate ligament tear, patellofemoral pain, and iliotibial band syndrome. Limited ankle dorsiflexion (DF) range of motion (ROM), which has been linked with some of these disorders, has also been associated with altered knee kinematics. Objective Explore the association of ankle DF ROM with hip and knee kinematics during a step down task. Methods Thirty healthy participants underwent a 3-dimensional analysis of hip and knee kinematics during a lateral step down test, followed by measurement of ankle DF ROM in weight-bearing (WB) and non-weight-bearing (NWB)...
September 29, 2016: Journal of Orthopaedic and Sports Physical Therapy
Joel Narveson, Matthew D Haberl, Patrick J Grabowski
Study Design Case report. Background Intra-articular hip pathologies can be difficult to diagnose, and evidence to guide physical therapy interventions is lacking. The purpose of this report is to describe a clinical pathway for conservative management of a patient with an acute acetabular labral tear (ALT) and femoroacetabular impingement (FAI). Case Description The patient was an 18-year-old woman with recent onset of right groin pain who underwent intra-articular corticosteroid injection and therapeutic exercise for the management of an acute ALT identified on radiographic imaging...
September 29, 2016: Journal of Orthopaedic and Sports Physical Therapy
Rienk Eshuis, Gijsbertus Wilhelmus Lentjes, Yelverton Tegner, Nienke Wolterbeek, Maurits Remmelt Veen
Study Design Clinical measurement. Background The Lysholm score and Tegner Activity Scale are frequently used patient-reported instruments to determine the functional status and activity level after anterior cruciate ligament (ACL) reconstruction. Objectives To translate and cross-culturally adapt the Lysholm score and Tegner Activity Scale for use in the Dutch population and to evaluate reliability and validity of these questionnaires in individuals after ACL reconstruction. Methods The translation and adaptation was conducted in several steps according to the guidelines in the literature...
September 28, 2016: Journal of Orthopaedic and Sports Physical Therapy
Cecilie Bartholdy, Louise Klokker, Elisabeth Bandak, Henning Bliddal, Marius Henriksen
Study Design Secondary analysis of clinical trial data. Background Knee osteoarthritis (OA) management has changed significantly over recent decades towards non-pharmacological treatments, particularly exercise. However, the optimal exercise program remains to be established. Objective To describe the implementation of standardized rescue exercises, for patients with pain exacerbations, and assess whether performing these benefited or further worsened symptoms in patients with exacerbation of knee OA symptoms...
September 28, 2016: Journal of Orthopaedic and Sports Physical Therapy
Kai Hu, Tatiana Y Besschetnova, Bjorn R Olsen
BMP2 is widely used for promotion of bone repair and regeneration. However, bone formation induced by BMP2 is quite variable. Bone forming progenitor cells in different locations appear to respond to BMP2 in different ways, and repair outcomes can vary as a consequence of modulating effects by other factors. In this study, we have examined the effects of VEGF on BMP2-induced repair of a cortical bone defect, a 1 mm diameter drill hole, in the proximal tibia of mice. Treatment of the defect with either a bolus of PBS or soluble VEGFR1 (sVEGFR1), a decoy receptor for VEGF, had the same effects on bone formation via intramembranous ossification in the defect and cartilage formation and injured periosteum, during the healing process...
September 7, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
Ahmet Adnan Karaarslan, Hakan Aycan, Yaman Örgen, Ahmet Karakaşli, Fatih Ertem, Erhan Sesli
No abstract text is available yet for this article.
August 2016: Acta Orthopaedica et Traumatologica Turcica
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