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extensor injury

Christopher L Jones, Derek G Kamper
Finger-thumb coordination is crucial to manual dexterity but remains incompletely understood, particularly following neurological injury such as stroke. While being controlled independently, the index finger and thumb especially must work in concert to perform a variety of tasks requiring lateral or palmar pinch. The impact of stroke on this functionally critical sensorimotor control during dynamic tasks has been largely unexplored. In this study, we explored finger-thumb coupling during close-open pinching motions in stroke survivors with chronic hemiparesis...
2018: Frontiers in Neurology
Enda F Whyte, Chris Richter, Siobhan O'Connor, Kieran A Moran
Anterior cruciate ligament (ACL) injuries frequently occur during side cutting maneuvers when fatigued or reacting to the sporting environment. Trunk and hip biomechanics are proposed to influence ACL loading during these activities. However, the effects of fatigue and unanticipation on the biomechanics of the kinetic chain may be limited by traditional discrete point analysis. We recruited twenty-eight male, varsity, Gaelic footballers (21.7±2.2 years; 178.7±14.6m; 81.8±11.4kg) to perform anticipated and unanticipated side cutting maneuvers pre- and post- a high intensity, intermittent exercise protocol (HIIP)...
March 13, 2018: Journal of Strength and Conditioning Research
Victoria Flores, James Becker, Eric Burkhardt, Joshua Cotter
The back squat exercise is typically practiced with varying squat depths and barbell loads. However, depth has been inconsistently defined, resulting in unclear safety precautions when squatting with loads. Additionally, females exhibit anatomical and kinematic differences to males which may predispose them to knee joint injuries. The purpose of this study was to characterize peak knee extensor moments (pKEMs) at three commonly practiced squat depths of above parallel, parallel, and full depth, and with three loads of 0% (unloaded), 50%, and 85% depth-specific one repetition maximum (1RM) in recreationally active females...
March 6, 2018: Journal of Strength and Conditioning Research
A F Martinez, G C Lessi, C Carvalho, F V Serrao
Kinematic changes have been correlated with different lower limb injuries. Movement is influenced by multiple factors and strength is one of the contributors that can influence it. Thus, the aim of this study was to evaluate the correlation among trunk and hip isometric strength with trunk and lower-limb kinematics during a single-leg drop vertical jump. Twenty-three healthy recreational women athletes aged between 18 and 35 years underwent isometric evaluation of hip abductor, hip extensor, and lateral trunk muscle strength and three-dimensional trunk and lower-limb kinematics during a single-leg drop vertical jump...
March 6, 2018: Journal of Strength and Conditioning Research
Sang Wook Lee, Billy C Vermillion, Shashwati Geed, Alexander W Dromerick, Derek G Kamper
Neurological injuries often cause degraded motor control. While rehabilitation efforts typically focus on movement kinematics, abnormal muscle activation patterns are often the primary source of impairment. Muscle-based therapies are likely more effective than joint-based therapy. In this paper, we examined the feasibility of biomimetic input mimicking the action of human musculotendons in altering hand muscle coordination. Twelve healthy subjects produced a submaximal isometric dorsal fingertip force, while a custom actuator provided assistance mirroring the actions of either the extrinsic extensor or the intrinsic muscles of the index finger...
March 2018: IEEE Transactions on Neural Systems and Rehabilitation Engineering
Sung Ho Jang, Younghyeon Kwon
RATIONALE: A 45-year-old right-handed female patient suffered head trauma after being hit by a truck that ran into a house. PATIENT CONCERNS: The patient lost consciousness for 1 hour and experienced posttraumatic amnesia for 1 month after the accident. DIAGNOSES: She underwent conservative management for a subdural hematoma in the left frontotemporal lobes and intracerebral hematoma in the left frontal lobe. INTERVENTIONS: The patient's Glasgow Coma Scale score was 11...
March 2018: Medicine (Baltimore)
Aakash Chauhan, Alan Slipak, Mark C Miller, Daniel T Altman, Gregory T Altman
INTRODUCTION: The use of a postoperative brace may be beneficial after open reduction and internal fixation of tibial plateau fractures. However, bracing has potential drawbacks related to cost, fitting, wound complications, and compliance. We hypothesized that no difference will be found between patients with and without bracing after open reduction and internal fixation of tibial plateau fractures. METHODS: In this prospective, comparative trial, patients were randomized to 6 weeks of bracing or no bracing after open reduction and internal fixation of tibial plateau fractures...
March 15, 2018: Journal of the American Academy of Orthopaedic Surgeons
Brent T Wise, Greg Erens, Aidin Eslam Pour, Thomas L Bradbury, James R Roberson
PURPOSE: Disruption of the extensor mechanism after total knee arthroplasty (TKA) is an infrequent but devastating complication. Presently, limited data exists regarding the optimal treatment and long-term outcomes. METHODS: Patients who underwent reconstruction of their knee extensor mechanism using Achilles tendon allograft following TKA between January 2003 and January 2012 were identified. Sixteen patients with 17 reconstructions (10 patellar tendons, 7 quadriceps tendons) were studied...
March 7, 2018: International Orthopaedics
N Alnaif, S Alrobaiea, Alain J Azzi, S Thibaudeau, M H Martin
Isolated avulsion fracture of the extensor carpi radialis longus (ECRL) tendon is a rare and poorly understood injury. We present a unique case of a 45-year-old male who fell on his flexed right hand. He presented with a subtle but extremely painful mass on the dorsum of his wrist. Ultrasound (U/S) imaging of the mass revealed an avulsed bone fragment attached to the ECRL tendon, confirming the clinical suspicion of an ECRL avulsion injury. Computed tomography and magnetic resonance imaging are well-documented imaging modalities to detect tendon avulsions...
March 7, 2018: Skeletal Radiology
Kengo Shimozaki, Junsuke Nakase, Yasushi Takata, Yosuke Shima, Katsuhiko Kitaoka, Hiroyuki Tsuchiya
PURPOSE: This 3-year prospective study assessed risk factors for noncontact anterior cruciate ligament (ACL) injuries in female Japanese high school basketball players. Players suffering noncontact ACL injuries were assumed to demonstrate poorer hip abductor, knee flexor, and knee extensor muscle strength, as well as static balance, than those without injuries. METHODS: One hundred and ninety-five new female high school basketball players underwent baseline examinations for various parameters during their first year of high school...
March 6, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Hyoung-Kil Park, Min-Kyung Jung, Eunkyung Park, Chang-Young Lee, Yong-Seok Jee, Denny Eun, Jun-Youl Cha, Jaehyun Yoo
Performing warm-ups increases muscle temperature and blood flow, which contributes to improved exercise performance and reduced risk of injuries to muscles and tendons. Stretching increases the range of motion of the joints and is effective for the maintenance and enhancement of exercise performance and flexibility, as well as for injury prevention. However, stretching as a warm-up activity may temporarily decrease muscle strength, muscle power, and exercise performance. This study aimed to clarify the effect of stretching during warm-ups on muscle strength, muscle power, and muscle endurance in a nonathletic population...
February 2018: Journal of Exercise Rehabilitation
Ioannis Karakis, Sofia Georghiou, H Royden Jones, Basil T Darras, Peter B Kang
BACKGROUND: We analyzed the clinical and electrophysiologic patterns of nerve injury in pediatric patients with radial neuropathy. METHODS: This is a retrospective analysis of 19 children and adolescents with radial neuropathy. RESULTS: The mean subject age was 12 years (range one month to 19 years), 56% were female, and 53% had traumatic etiologies. Weakness in the finger and wrist extensors was the prevailing complaint (82%). Predominant localization was at the posterior interosseous nerve (37%), followed by the radial nerve below the spiral groove (32%), the radial nerve at the spiral groove (26%), and the radial nerve above the spiral groove (5%)...
January 31, 2018: Pediatric Neurology
Yalda A Kharaz, Elizabeth G Canty-Laird, Simon R Tew, Eithne J Comerford
Tendons and ligaments play key roles in the musculoskeletal system in both man and animals. Both tissues can undergo traumatic injury, age-related degeneration and chronic disease, causing discomfort, pain and increased susceptibility to wider degenerative joint disease. To date, tendon and ligament ultrastructural biology is relatively under-studied in healthy, non-diseased tissues. This information is essential to understand the pathology of these tissues with regard to function-related injury and to assist with the future development of tissue-engineered tendon and ligament structures...
March 2, 2018: Journal of Anatomy
Matt Greig
Kicking is a fundamental skill and a primary non-contact mechanism of injury in soccer, with injury incidence increasing during the latter stages of match-play. Ten male professional soccer players completed a 90min treadmill protocol based on the velocity profile of soccer match-play. Pre-exercise, and at 15 min intervals, players completed a maximal velocity kick subjected to kinematic analysis at 200 Hz. Pre-exercise, and at the end of each half, players also completed isokinetic concentric knee extensor repetitions at 180, 300 and 60 °·s-1 ...
February 27, 2018: Journal of Applied Biomechanics
Philip Rosinsky, Oren Sarig, Yehuda David, Amir Oron
Mallet finger is a common injury involving the extensor mechanism of the finger. It presents as an inability to extend the distal phalanx of the digit. In the right clinical setting, a thorough examination should be performed and supplemented by adequate radiographs. The mechanism of injury is usually a direct blow to an extended finger causing hyperflexion or hyperextension of the distal phalanx. Common occurrences are in young adults during sporting activities or in minor falls or trauma in osteoporotic individuals...
February 2018: Harefuah
Renan F H Nunes, Rodolfo A Dellagrana, Fábio Y Nakamura, Cosme F Buzzachera, Flavia A M Almeida, Lucinar J F Flores, Luiz G A Guglielmo, Sérgio G da Silva
Purpose/Background: Strength asymmetries are related to knee injuries in intermittent sports players. The purpose of this study was to examine whether elite futsal players demonstrate strength asymmetries during knee isokinetic testing applying the Croisier et al.21 criteria. Methods: Forty male elite (27.9 ± 6.5 years) Brazilian futsal players participated in the study. The testing protocol required players to perform concentric contractions of both quadriceps and hamstring muscles at angular velocities of 60 °·s-1 and 240 °·s-1 and eccentric contractions of hamstring at 30 °·s-1 and 120 °·s-1 ...
February 2018: International Journal of Sports Physical Therapy
Rasmus S Husted, Jesper Bencke, Per Hölmich, Lars L Andersen, Kristian Thorborg, Thomas Bandholm, Bjørn Gliese, Hanne B Lauridsen, Grethe Myklebust, Per Aagaard, Mette K Zebis
Background: Reduced lower extremity muscle strength as well as reduced lower extremity muscle pre-activity (defined as muscular activity just prior to initial ground contact) during high-risk movements are factors related to increased risk of non-contact ACL injury in adolescent female athletes. A strong relationship exists between muscle strength and muscle activity obtained during an isometric contraction, however, whether these two measures are related when muscle activity is obtained during a movement associated with a high risk of non-contact ACL injury is not known...
February 2018: International Journal of Sports Physical Therapy
Marcus Simonian, Michael Dan, David Graan, William Lumsdaine, Bryce Meads
Extensor tendon injuries are classified as per the zone of injury. Zone 1 injuries disrupt the lateral bands with resultant inability to extend the distal interphalangeal joint. Open Zone 1 injuries have many well-described treatment options. To date, none of these have been compared directly. Our aim was to compare the benefit of additional Kirschner-wire fixation with suture repair and splinting of open Zone 1 extensor tendon injuries. We performed a retrospective cohort analysis comparing 2 different surgical procedures, "Suture and Splint" versus "Suture, Splint, and Kirschner wire...
February 23, 2018: Annals of Plastic Surgery
Enqi Guo, Qingping Xie, Ziguan Zhu, Peihong Jin, Peihong Jin, Liang Wang
Management of hand and foot defects with exposed tendons is a big challenge for plastic surgeons. Thin vascularized tissue offers an ideal surface for tendon excursion. OBJECTIVE: This study examines the reconstructive benefits of a laparoscopy-assisted chimeric peritoneal-deep inferior epigastric artery perforator (DIEP) flap in the treatment of hand and foot injury defects. MATERIALS AND METHODS: A retrospective review was performed on 8 patients (6 men, 2 women) that received hand or foot reconstruction with laparoscopy-assisted chimeric peritoneal-DIEP flap...
February 2018: Wounds: a Compendium of Clinical Research and Practice
Guan-Yi Liu, Ling-Yong Jing, Zhi-Jun Pan, Long-Jun Chen, Ming Li, Jian-Xiang Feng, Wei-Hu Ma
OBJECTIVE: To explore the clinical outcomes of internal fixation or replacement for the treatment of radial head fractures through the extensor digitorum communis splitting approach. METHODS: From July 2012 to May 2015, 25 patients with radial head fractures were reviewed. There were 17 males and 8 females, ranging in age from 20 to 67 years old, with a mean age of 39 years old. Twenty-one patients were treated with reconstruction of plate internal fixation, and 4 patients were treated with radial head replacement...
November 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
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