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https://www.readbyqxmd.com/read/28338524/chronic-boutonniere-deformities-supple-or-stiff-a-new-surgical-technique-with-early-mobilization-in-11-cases
#1
Elodie Dubois, Frederic Teboul, Thomas Bihel, Jean-N Goubier
Injuries to the central slip of the extensor mechanism can lead to a Boutonniere deformity with important functional consequences. We report a series of 11 patients treated by lengthening-dorsalizing the lateral bands and tightening the central slip with early mobilization. The average age of the patients was 42 years (14;52). The extension defect of the proximal interphalangeal (PIP) joint was 64 degrees (80;55) and the hyperextension of the distal interphalangeal joint was 10 degrees (15;5). The surgery was performed with peripheral nerve block (sensitive), allowing dynamic adjustment of the tendinous sutures...
March 23, 2017: Techniques in Hand & Upper Extremity Surgery
https://www.readbyqxmd.com/read/28338388/preferred-hip-strategy-during-landing-reduces-knee-abduction-moment-in-collegiate-female-soccer-players
#2
Anh-Dung Nguyen, Jeffrey B Taylor, Taylor G Wimbish, Jennifer L Keith, Kevin R Ford
CONTEXT: Hip focused interventions are aimed to decrease frontal plane knee loading related to anterior cruciate ligament (ACL) injuries. Whether a preferred hip landing strategy decreases frontal plane knee loading is unknown. OBJECTIVE: To determine if a preferred hip landing strategy during a drop vertical jump (DVJ) is utilized during a single leg landing (SLL) task and whether differences in frontal plane knee loading are consistent between a DVJ and a SLL task...
March 24, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28330449/a-cross-sectional-study-of-the-effects-of-load-carriage-on-running-characteristics-and-tibial-mechanical-stress-implications-for-stress-fracture-injuries-in-women
#3
Chun Xu, Amy Silder, Ju Zhang, Jaques Reifman, Ginu Unnikrishnan
BACKGROUND: Load carriage is associated with musculoskeletal injuries, such as stress fractures, during military basic combat training. By investigating the influence of load carriage during exercises on the kinematics and kinetics of the body and on the biomechanical responses of bones, such as the tibia, we can quantify the role of load carriage on bone health. METHODS: We conducted a cross-sectional study using an integrated musculoskeletal-finite-element model to analyze how the amount of load carriage in women affected the kinematics and kinetics of the body, as well as the tibial mechanical stress during running...
March 23, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28325429/stener-like-lesions-due-to-radial-collateral-ligament-rupture-in-the-metacarpophalangeal-joints-of-two-adjacent-fingers-a-case-report-and-review-of-literature
#4
A Toffoli, M Chammas
Rupture of the collateral ligaments in the metacarpophalangeal (MCP) joint of a finger is less common than in the thumb. Literature about these lesions is sparse but the number of chronic injuries reported underlies the number of cases overlooked by physicians at the first visit. A Stener-like lesion is characterized by interposition of the extensor hood or the sagittal band between the torn collateral ligament of the MCP joint of a finger and its insertion. It was originally described as interposition of the adductor aponeurosis of the thumb...
April 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28319872/intrathecal-baclofen-bolus-reduces-exaggerated-extensor-coactivation-during-pre-swing-and-early-swing-of-gait-after-acquired-brain-injury
#5
John W Chow, Stuart A Yablon, Dobrivoje S Stokic
OBJECTIVE: To characterize the concurrent activation of rectus femoris (RF) and medial gastrocnemius (MG) muscles (extensor coactivation) during gait in subjects with pronounced resting hypertonia after acquired brain injury (ABI) and examine changes after intrathecal baclofen (ITB) bolus injection. METHODS: Magnitude and duration of extensor coactivation during different phases of gait were assessed by recording gait kinematics and activity in bilateral RF and MG muscles in 18 controls and 18 ABI subjects before and at 2, 4, and 6h after a 50-μg ITB injection...
March 2, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28314214/gait-biomechanics-following-lower-extremity-trauma-amputation-vs-reconstruction
#6
Elizabeth Russell Esposito, Daniel J Stinner, John R Fergason, Jason M Wilken
BACKGROUND: Surgical advances have substantially improved outcomes for individuals sustaining traumatic lower extremity injury. Injuries once requiring lower limb amputation are now routinely managed with limb reconstruction surgery. However, comparisons of functional outcomes between the procedures are inconclusive. PURPOSE: To compare gait biomechanics after lower limb reconstruction and transtibial amputation. METHODS: Twenty-four individuals with unilateral lower limb reconstruction wearing a custom ankle-foot orthosis (Intrepid Dynamic Exoskeletal Orthosis), 24 with unilateral, transtibial amputation, and 24 able-bodied control subjects underwent gait analysis at a standardized Froude speed based on leg length...
February 21, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28294692/lower-extremity-isokinetic-strength-ratios-of-elite-springboard-and-platform-diving-athletes
#7
Amilton Vieira, Savio Alex, André Martorelli, Lee E Brown, Ricardo Moreira, Martim Bottaro
OBJECTIVES: The purpose of the present study was to examine knee extensor and flexor muscle strength ratios of an elite group of diving athletes. METHODS: Sixteen divers (10 females and 6 males) from the Brazil national team were assessed for lower-body strength. They had participated in international competitions such as the 2016 Olympic Games and 2015 Pan American Games. The dynamic concentric torque of their knee flexor and extensor muscles were evaluated using a Biodex isokinetic dynamometer...
March 15, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28290190/disruption-in-bone-marrow-fat-may-attenuate-testosterone-action-on-muscle-size-after-spinal-cord-injury-a-case-report
#8
Ashraf S Gorgey, Pamela D Moore, Rodney C Wade, Ranjodh S Gill, Timothy Lavis, Robert A Adler
BACKGROUND: Mesenchymal stem cells can be differentiated into muscle satellite cells. Testosterone replacement therapy (TRT) promotes the differentiation of satellite cells into muscle cells. CASE REPORT: A 31 year old male with a T4 complete chronic spinal cord injury (SCI) had fixation for a mid-shaft fracture of the left femur. The participant received transdermal testosterone patches (4mg/day) daily for 16 weeks. Skeletal muscle and yellow bone marrow adiposity cross-sectional areas (CSAs) of both thighs were measured using magnetic resonance imaging...
March 13, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28289946/systematic-evaluation-of-concomitant-extensor-tendon-sheath-injury-in-patients-with-distal-intra-articular-radial-fractures-in-mdct-using-the-floating-fat-sign
#9
Amelie von Schneider-Egestorf, Bernhard Meyer, Frank Wacker, Herbert Rosenthal, Christian von Falck
OBJECTIVES: We aimed to evaluate the involvement of extensor tendon sheaths in a large MDCT study group of patients with distal intra-articular radial fractures using the floating fat sign. METHODS: 603 MDCT scans of patients with acute intra-articular distal radial fractures (Frykman III-VIII) acquired between January 2005 and October 2011 were analysed in consensus by two radiologists. The extensor tendon sheath involvement was assessed for each extensor tendon compartment and visually graded from 0 to 2 based on the amount of fat-fluid levels...
March 13, 2017: European Radiology
https://www.readbyqxmd.com/read/28282793/relationship-between-scapular-muscle-and-core-endurance-in-healthy-subjects
#10
Zeynep Hazar Kanik, Omer Osman Pala, Gurkan Gunaydin, Ugur Sozlu, Zeynep Beyza Alkan, Selda Basar, Seyit Citaker
BACKGROUND: Scapular muscle endurance and core endurance reportedly influence shoulder injury risk. The exact relationships between scapular muscle endurance and core endurance, and how they impact one another in the healthy subjects remain unclear. OBJECTIVE: To investigate the relationship between scapular muscle endurance and core endurance in healthy subjects. METHODS: Fifty healthy volunteers (23 males, 27 females; mean age 20.42 ± 1...
March 3, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28269706/a-stimulation-driven-exoskeleton-for-walking-after-paraplegia
#11
Sarah R Chang, Mark J Nandor, Lu Li, Kevin M Foglyano, John R Schnellenberger, Rudi Kobetic, Roger D Quinn, Ronald J Triolo
An untethered version of a stimulation-driven exoskeleton was evaluated for its ability to restore walking after paralysis from spinal cord injury. The hybrid neuroprosthesis (HNP) combined a passive variable-constraint exoskeleton for stability and support with functional neuromuscular stimulation (FNS) to contract the paralyzed muscles to drive limb movement. This self-contained HNP was operated by an onboard controller that sampled sensor signals, generated appropriate commands to both the exoskeletal constraints and integrated stimulator, and transmitted data wirelessly via Bluetooth to an off-board computer for real-time monitoring and recording for offline analysis...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268895/prediction-of-forelimb-muscle-emgs-from-the-corticospinal-signals-in-rats
#12
Sinan Gok, Mesut Sahin
To generate voluntary forearm movements, the information that is encoded in the activity of the cortical neurons has to travel through the spinal cord and activate the skeletal muscles. The axons carrying these signals are tightly bundled together in the descending tracts that control the spinal circuitry innervating the forearm muscles. In this paper, we show that corticospinal tract (CST) signals can be used to predict forearm electromyographic (EMG) activities that are recorded during an isometric-pull task...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28265259/remodeling-brain-activity-by-repetitive-cervicothoracic-transspinal-stimulation-after-human-spinal-cord-injury
#13
Lynda M Murray, Maria Knikou
Interventions that can produce targeted brain plasticity after human spinal cord injury (SCI) are needed for restoration of impaired movement in these patients. In this study, we tested the effects of repetitive cervicothoracic transspinal stimulation in one person with cervical motor incomplete SCI on cortical and corticospinal excitability, which were assessed via transcranial magnetic stimulation with paired and single pulses, respectively. We found that repetitive cervicothoracic transspinal stimulation potentiated intracortical facilitation in flexor and extensor wrist muscles, recovered intracortical inhibition in the more impaired wrist flexor muscle, increased corticospinal excitability bilaterally, and improved voluntary muscle strength...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28262282/a-survey-of-extensor-pollicis-longus-tendon-injury-at-the-time-of-distal-radius-fractures
#14
Kiyohito Naito, Yoichi Sugiyama, Thitinut Dilokhuttakarn, Mayuko Kinoshita, Kenji Goto, Kentaro Aritomi, Yoshiyuki Iwase, Kazuo Kaneko
BACKGROUND: The purpose of this study is to investigate the presence or absence, incidence, and degree of extensor pollicis longus (EPL) tendon injury by visual confirmation of the EPL at the time of osteosynthesis for distal radius fractures. METHODS: The subjects were 25 patients (5 males and 20 females; mean age: 56 years) with distal radius fracture that had a dorsal roof fragment. During osteosynthesis using a volar locking plate, the third compartment was exposed in order to determine the EPL injury...
February 27, 2017: Injury
https://www.readbyqxmd.com/read/28259751/cadaver-study-of-anatomic-landmark-identification-for-placing-ankle-arthroscopy-portals
#15
Benjamin Scheibling, Guillaume Koch, Philippe Clavert
BACKGROUND: Arthroscopy-assisted surgery is now widely used at the ankle for osteochondral lesions of the talus, anterior and posterior impingement syndromes, talocrural or subtalar fusion, foreign body removal, and ankle instability. Injuries to the vessels and nerves may occur during these procedures. OBJECTIVE: To determine whether ultrasound topographic identification of vulnerable structures decreased the risk of iatrogenic injuries to vessels, nerves, and tendons and influenced the distance separating vulnerable structures from the arthroscope introduced through four different portals...
March 1, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28255488/traumatic-rupture-of-an-intermediate-tendon-in-a-patient-with-patellar-duplication
#16
Stéphane Pelet, Mathieu Hébert, Amerigo Balatri, Pierre-Alexandre LeBlanc
Patellar duplication is a rare asymptomatic condition. The diagnosis is often made following a traumatic event associated with an injury to the knee extensor mechanism. The treatment is often surgical and consists in removal of the smaller part of the patella with tendon reinsertion. The presence and rupture of an intermediate tendon between the two parts of the patella have not been reported in the modern literature. We present a traumatic rupture of an intermediate tendon in a patient with horizontal patellar duplication...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/28251861/skeletal-muscle-changes-following-stroke-a-systematic-review-and-comparison-to-healthy-individuals
#17
Jennifer L Hunnicutt, Chris M Gregory
BACKGROUND: Despite extensive study of the impact of stroke on muscle and functional performance, questions remain regarding the extent to which changes are due to the neurological injury vs. age-related loss of morphology and force production. OBJECTIVES: To synthesize available evidence describing post-stroke changes in lower extremity muscle size and strength compared to healthy adults. METHODS: Scientific literature was searched up to April 2016 to identify studies that included lower extremity muscle size and strength measures in individuals with chronic stroke...
March 2, 2017: Topics in Stroke Rehabilitation
https://www.readbyqxmd.com/read/28250760/transfer-of-the-extensor-indicis-proprius-branch-of-posterior-interosseous-nerve-to-reconstruct-ulnar-nerve-and-median-nerve-injured-proximally-an-anatomical-study
#18
Pei-Ji Wang, Yong Zhang, Jia-Ju Zhao, Ju-Pu Zhou, Zhi-Cheng Zuo, Bing-Bing Wu
Proximal or middle lesions of the ulnar or median nerves are responsible for extensive loss of hand motor function. This occurs even when the most meticulous microsurgical techniques or nerve grafts are used. Previous studies had proposed that nerve transfer was more effective than nerve grafting for nerve repair. Our hypothesis is that transfer of the posterior interosseous nerve, which contains mainly motor fibers, to the ulnar or median nerve can innervate the intrinsic muscles of hands. The present study sought to investigate the feasibility of reconstruction of the deep branch of the ulnar nerve and the thenar branch of median nerve by transferring the extensor indicis proprius branch of the posterior interosseous nerve obtained from adult cadavers...
January 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28242800/rupture-of-the-extensor-hood-of-the-fifth-toe-a-rare-injury
#19
Sara Venturini, Suchi Gaba, Jitendra Mangwani
Closed injuries of the extensor hood of the lesser toes are rare and seldom reported in the literature. We present the case of a woman aged 25 years who presented to the orthopaedic fracture clinic with a 2-week history of pain in the left fifth toe and inability to extend following a ballet dancing session. Investigations showed no fracture on plain radiographs, but an ultrasound scan demonstrated rupture to the extensor hood of the little toe. Successful surgical repair of the extensor hood was performed, and the patient made a good recovery with return to dancing activities...
February 27, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28227967/a-stimulation-driven-exoskeleton-for-walking-after-paraplegia
#20
Sarah R Chang, Mark J Nandor, Lu Li, Kevin M Foglyano, John R Schnellenberger, Rudi Kobetic, Roger D Quinn, Ronald J Triolo, Sarah R Chang, Mark J Nandor, Lu Li, Kevin M Foglyano, John R Schnellenberger, Rudi Kobetic, Roger D Quinn, Ronald J Triolo, Mark J Nandor, Rudi Kobetic, Roger D Quinn, John R Schnellenberger, Sarah R Chang, Kevin M Foglyano, Lu Li, Ronald J Triolo
An untethered version of a stimulation-driven exoskeleton was evaluated for its ability to restore walking after paralysis from spinal cord injury. The hybrid neuroprosthesis (HNP) combined a passive variable-constraint exoskeleton for stability and support with functional neuromuscular stimulation (FNS) to contract the paralyzed muscles to drive limb movement. This self-contained HNP was operated by an onboard controller that sampled sensor signals, generated appropriate commands to both the exoskeletal constraints and integrated stimulator, and transmitted data wirelessly via Bluetooth to an off-board computer for real-time monitoring and recording for offline analysis...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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