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Functional muscle transfer

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https://www.readbyqxmd.com/read/29132787/distal-biceps-brachii-tendon-transfer-for-re-establishing-extrinsic-finger-function-feasibility-study-in-cadavers
#1
Matthew D Welsch, Alexander D Mih, Brock D Reiter, Gregory A Merrell
PURPOSE: To determine the anatomic feasibility of transferring the biceps brachii tendon into either the extensor digitorum communis (EDC) or flexor digitorum profundus (FDP), determine the excursion imparted to EDC and FDP tendons after transfer, and compare the work capacity of the cadaver biceps to previously published data on the biceps as well as the recipient muscles by calculating the physiologic cross-sectional area (PCSA). METHODS: Four fresh-frozen cadaver shoulder-elbow-wrist specimens were used to measure tendon excursion that can be obtained with transfer of the distal biceps tendon into either the EDC or FDP...
November 11, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29126605/a-novel-patterned-magnetic-micropillar-array-substrate-for-analysis-of-cellular-mechanical-responses
#2
Kazuaki Nagayama, Takuya Inoue, Yasuhiro Hamada, Takeo Matsumoto
Traction forces generated at cellular focal adhesions (FAs) play an essential role in regulating various cellular functions. These forces (1-100 nN) can be measured by observing the local displacement of a flexible substrate upon which cells have been plated. Approaches employing this method include using microfabricated arrays of poly(dimethylsiloxane) (PDMS) micropillars that bend by cellular traction forces. A tool capable of applying a force to FAs independently, by actively moving the micropillars, should become a powerful tool to delineate the cellular mechanotransduction mechanisms...
October 25, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29125661/eyelid-reanimation-using-crossface-nerve-graft-relationship-between-surgical-outcome-and-preoperative-paralysis-duration
#3
Masayuki Okochi, Hiromi Okochi, Emiko Asai, Takao Sakaba, Kazuki Ueda
BACKGROUND: To reanimate the mimetic muscles, crossface nerve graft (CFNG) is an effective surgical option. However, muscle atrophy after facial paralysis may influence the surgical result. We analyzed the relationship between surgical result and preoperative paralysis duration. METHODS: We performed CFNG on 15 patients. The sural nerve was transferred between the affected and nonaffected sides of the zygomatic branch. Eyelid function and eyelid lid were evaluated using the modified House-Brackmann scale...
November 10, 2017: Microsurgery
https://www.readbyqxmd.com/read/29114531/effects-of-a-short-term-detraining-period-on-muscle-functionality-and-cognition-of-strength-trained-older-women-a-preliminary-report
#4
Hélio José Coelho, Bruno Rodrigues, Ivan de Oliveira Gonçalves, Marco Carlos Uchida
The present study aimed to investigate the impact of a 1-month detraining composed by Christmas and New Year's Day in the functional and cognitive parameters of 12 older women who had previously participated in 22-week moderate intensity strength training program (ST; n=6) or remained performing their regular habits of life during all study period, without engaging in physical exercise programs (CG; n=6). Transfer capacity (i.e., Timed Up and Go [TUG]) and executive function (i.e., TUG with a cognitive task) were increased in the ST group after the intervention...
October 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29103305/lower-trapezius-transfer-for-patients-with-brachial-plexus-injury
#5
Bruno E Crepaldi, José Queiroz L Neto, Marcelo R Rezende, Rames M Júnior, Daniele S Scarcella
BACKGROUND: Brachial plexus injury is a complex entity that often results in partial recovery. Most studies to date have focused on improving shoulder abduction. However, a recent technique has been outlined-one that transfers the lower trapezius to improve the external rotation of the shoulder. The primary objective of this study was to evaluate the gains in external rotation of the shoulder in patients who have undergone transfer of the lower trapezius; secondarily, we assessed the range of motion in the elbow and shoulder joints, as well as the muscle strength and quality of life...
November 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/29099295/femoral-nerve-transfers-for-restoring-tibial-nerve-function-an-anatomical-study-and-clinical-correlation-a-report-of-2-cases
#6
Amy M Moore, Emily M Krauss, Rajiv P Parikh, Michael J Franco, Thomas H Tung
Sciatic nerve injuries cause debilitating functional impairment, particularly when the injury mechanism and level preclude reconstruction with primary grafting. The purpose of this study was to demonstrate the anatomical feasibility of nerve transfers from the distal femoral nerve terminal branches to the tibial nerve and to detail the successful restoration of tibial function using the described nerve transfers. Six cadaveric legs were dissected for anatomical analysis and the development of tension-free nerve transfers from femoral nerve branches to the tibial nerve...
November 3, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29095059/tendon-transfer-surgery-focus-on%C3%A2
#7
Roberto Cuomo, Luca Grimaldi, Giuseppe Nisi, Cesare Brandi, Carlo D'Aniello
Median and Ulnar nerve palsy is a devastating condition that compromise hand function. A procedure of tendon transfer may be helpful to restore the movements by linking palsy muscles to other muscles able to contract. Scientific discoveries and technological innovations have profoundly changed this kind of surgery; studies on sarcomeres, for example, changed the concept of tensioning. To date we know that muscle strength and its contraction capacity depends on many factors (not only tensioning) such as sarcomeres length, cellular cytoskeleton and extracellular matrix composition: all of these factors interact together and in a ways not still fully understood, determining the complex concept of "movement...
November 2, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/29092683/motor-performance-of-individuals-with-cerebral-palsy-in-a-virtual-game-using-a-mobile-phone
#8
Juliana Nobre de Paula, Carlos Bandeira de Mello Monteiro, Talita Dias da Silva, Camila Miliani Capelini, Lilian Del Cielo de Menezes, Thais Massetti, James Tonks, Suzanna Watson, Alessandro Hervaldo Nicolai Ré
OBJECTIVES: Cerebral palsy (CP) is a permanent disorder of movement, muscle tone or posture that is caused by damage to the immature and developing brain. Research has shown that Virtual Reality (VR) technology can be used in rehabilitation to support the acquisition of motor skills and the achievement of functional tasks. The aim of this study was to explore for improvements in the performance of individuals with CP with practice in the use of a virtual game on a mobile phone and to compare their performance with that of the control group...
November 1, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/29081423/muscular-dystrophy-with-ribitol-phosphate-deficiency-a-novel-post-translational-mechanism-in-dystroglycanopathy
#9
Motoi Kanagawa, Tatsushi Toda
Muscular dystrophy is a group of genetic disorders characterized by progressive muscle weakness. In the early 2000s, a new classification of muscular dystrophy, dystroglycanopathy, was established. Dystroglycanopathy often associates with abnormalities in the central nervous system. Currently, at least eighteen genes have been identified that are responsible for dystroglycanopathy, and despite its genetic heterogeneity, its common biochemical feature is abnormal glycosylation of alpha-dystroglycan. Abnormal glycosylation of alpha-dystroglycan reduces its binding activities to ligand proteins, including laminins...
October 24, 2017: Journal of Neuromuscular Diseases
https://www.readbyqxmd.com/read/29075160/osseointegrated-implants-and-prosthetic-reconstruction-following-skull-base-surgery
#10
REVIEW
Shirley Hu, Demetri Arnaoutakis, Sameep Kadakia, Allison Vest, Raja Sawhney, Yadranko Ducic
Rehabilitation following ablative skull base surgery remains a challenging task, given the complexity of the anatomical region, despite the recent advances in reconstructive surgery. Remnant defects following resection of skull base tumors are often not amenable to primary closure. As such, numerous techniques have been described for reconstruction, including local rotational muscle flaps, pedicled flaps with skin paddle, or even free tissue transfer. However, not all patients are appropriate surgical candidates and therefore may instead benefit from nonsurgical options for functional and aesthetic restoration...
November 2017: Seminars in Plastic Surgery
https://www.readbyqxmd.com/read/29075158/locoregional-and-microvascular-free-tissue-reconstruction-of-the-lateral-skull-base
#11
REVIEW
Demetri Arnaoutakis, Sameep Kadakia, Manoj Abraham, Thomas Lee, Yadranko Ducic
The goals of reconstruction following any oncologic extirpation are preservation of function, restoration of cosmesis, and avoidance of morbidity. Anatomically, the lateral skull base is complex and conceptually intricate due to its three-dimensional morphology. The temporal bone articulates with five other cranial bones and forms many sutures and foramina through which pass critical neural and vascular structures. Remnant defects following resection of lateral skull base tumors are often not amenable to primary closure...
November 2017: Seminars in Plastic Surgery
https://www.readbyqxmd.com/read/29073905/therapeutic-application-of-t-regulatory-cells-in-composite-tissue-allotransplantation
#12
REVIEW
Jeong-Hee Yang, Seok-Chan Eun
With growing number of cases in recent years, composite tissue allotransplantation (CTA) has been improving the quality of life of patient who seeks reconstruction and repair of damaged tissues. Composite tissue allografts are heterogeneous. They are composed of a variety of tissue types, including skin, muscle, vessel, bone, bone marrow, lymph nodes, nerve, and tendon. As a primary target of CTA, skin has high antigenicity with a rich repertoire of resident cells that play pivotal roles in immune surveillance...
October 26, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29071376/-corrective-procedures-and-indications-for-cavovarus-foot-deformities-in-children-and-adolescents
#13
REVIEW
J Hamel
Cavovarus deformities in children and adolescents require sound considerations concerning the timing for corrective surgery. Progression can be recognized best by repeated pedographic examination with evaluation of the typical features of cavovarus deformity. Surgical correction consists of a combination of soft tissue release, bony realignment, and restoration of muscle balance. In most cases plantar or medioplantar soft tissue release should be considered, whereas calf muscle lengthening is rarely indicated...
October 25, 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/29066244/reliability-of-assessing-postural-control-during-seated-balancing-using-a-physical-human-robot-interaction
#14
Ahmed Ramadan, Jacek Cholewicki, Clark J Radcliffe, John M Popovich, N Peter Reeves, Jongeun Choi
This study evaluated the within- and between-visit reliability of a seated balance test for quantifying trunk motor control using input-output data. Thirty healthy subjects performed a seated balance test under three conditions: eyes open (EO), eyes closed (EC), and eyes closed with vibration to the lumbar muscles (VIB). Each subject performed three trials of each condition on three different visits. The seated balance test utilized a torque-controlled robotic seat, which together with a sitting subject resulted in a physical human-robot interaction (pHRI) (two degrees-of-freedom with upper and lower body rotations)...
October 7, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29062663/free-neurovascular-latissimus-dorsi-muscle-transplantation-for-reconstruction-of-hip-abductors
#15
Sergi Barrera-Ochoa, Jose Manuel Collado-Delfa, Andrea Sallent, Alejandro Lluch, Roberto Velez
Resection of tumors affecting the hip abductors can cause significant decrease in muscle strength and may lead to abnormal gait and poor function. We present a case report showing full functional recovery after resection of a synovial sarcoma affecting the right gluteus medius and minimus muscles with reconstruction free neurovascular latissimus dorsi muscle transplantation. The latissimus dorsi muscle was harvested following standard technique and fixed to the ilium and the greater trochanter. Receptor vessels were end-to-end anastomosed to the subscapular vessels followed by an end-to-end epineural suture between the superior gluteal nerve and the thoracodorsal nerve...
September 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/29062019/myoelectric-pattern-recognition-outperforms-direct-control-for-transhumeral-amputees-with-targeted-muscle-reinnervation-a-randomized-clinical-trial
#16
Levi J Hargrove, Laura A Miller, Kristi Turner, Todd A Kuiken
Recently commercialized powered prosthetic arm systems hold great potential in restoring function for people with upper-limb loss. However, effective use of such devices remains limited by conventional (direct) control methods, which rely on electromyographic signals produced from a limited set of muscles. Targeted Muscle Reinnervation (TMR) is a nerve transfer procedure that creates additional recording sites for myoelectric prosthesis control. The effects of TMR may be enhanced when paired with pattern recognition technology...
October 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29060806/estimation-of-tibialis-anterior-muscle-stiffness-during-the-swing-phase-of-walking-with-various-footwear
#17
Takanori Uchiyama, Yutaka Hori, Kenta Suzuki
The current study examined stiffness in the tibialis anterior muscle during the swing phase of walking while wearing various footwear. Seven healthy young men participated in this study. Participants were instructed to walk on a treadmill at 3 km/h while wearing sports shoes, slippers, or slippers with belts. The common peroneal nerve was electrically stimulated every two steps at toe-off during walking. Mechanomyograms (MMGs), electromyograms, and ankle angle were measured. Evoked MMG was extracted using a Kalman filter and subtraction of walking acceleration...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29058797/the-fabrication-of-3d-surface-scaffold-of-collagen-poly-l-lactide-co-caprolactone-with-dynamic-liquid-system-and-its-application-in-urinary-incontinence-treatment-as-a-tissue-engineered-sub-urethral-sling-in-vitro-and-in-vivo-study
#18
Kaile Zhang, Nailong Cao, Xuran Guo, Qingsong Zou, Shukui Zhou, Ranxing Yang, Weixin Zhao, Xiumei Mo, Wei Liu, Qiang Fu
AIMS: To fabricate a novel nanoyarn biomaterial via a dynamic liquid electrospinning system, and to simultaneously evaluate whether nanoyarn is capable of being applied as a urinary sling for future clinical transfer. METHODS: Nanoyarn was cultured with adipose-derived stem cells (ADSCs). Cell morphology and function were observed on nanoyarn. Female rats that underwent vagina dilatation (VD) and bilateral ovarian resection (BOR) were used as the urinary incontinence model...
October 23, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/29057989/physical-therapy-is-targeted-and-adjusted-over-time-for-the-rehabilitation-of-locomotor-function-in-acute-spinal-cord-injury-interventions-in-physical-and-sports-therapy
#19
Martina Franz, Lea Richner, Markus Wirz, Anne von Reumont, Ulla Bergner, Tanja Herzog, Werner Popp, Kathrin Bach, Norbert Weidner, Armin Curt
STUDY DESIGN: Prospective observational multicenter study. OBJECTIVES: Investigation of content, duration and adjustment of physical therapy for the rehabilitation of ambulation in acute spinal cord injury (SCI). SETTING: European Multicenter Study of SCI (EMSCI). METHODS: Physical therapy interventions during acute in-patient rehabilitation of eighty incomplete SCI patients (AIS B, C, D all lesion levels) were recorded using the SCI - Intervention Classification System...
October 23, 2017: Spinal Cord
https://www.readbyqxmd.com/read/29046209/-paroxysmal-muscle-weakness-liver-enlargement-and-hypoglycemia-in-a-boy
#20
Ya-Jie Cui, Chun-Lan Song, Yi-Bing Cheng
A boy aged 11 years was admitted due to intermittent weakness and difficulty in walking for 6 years, and hepatomegaly, glycopenia and unconsciousness for 4 years. The laboratory examinations showed severe metabolic acidosis, hypoglycemia, and abnormal liver function. CT scan showed marked liver enlargement with fat density shadow. The boy was given fluid infusion, correction of acidosis, intravenous injection of glucose, L-carnitine, compound vitamin B, and coenzyme Q10, but he was in a persistent coma and it was difficult to correct refractory metabolic acidosis and hypoglycemia...
October 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
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