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Tendon transfers

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https://www.readbyqxmd.com/read/29679723/comparison-of-hook-plate-with-versus-without-double-tunnel-coracoclavicular-ligament-reconstruction-for-repair-of-acute-acromioclavicular-joint-dislocations-a-prospective-randomized-controlled-clinical-trial
#1
Jian Yin, Zhaoyang Yin, Ge Gong, Chao Zhu, Chao Sun, Xinhui Liu
PURPOSE: This study was designed to compare the surgical outcomes of a hook plate with double-tunnel coracoclavicular (CC) ligament reconstruction by conjoined tendon transfer versus single hook plate surgery for the repair of acute type of Rockwood type III and V acromioclavicular (AC) joint dislocations. METHODS: The study cohort included 62 patients with acute (within 6 weeks after trauma) Rockwood type III and V AC joint dislocations who underwent surgery from February 2012 to September 2015...
April 18, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29671022/-the-minimally-invasive-chevron-and-akin-osteotomy-mica
#2
REVIEW
Sebastian Altenberger, Stefanie Kriegelstein, Oliver Gottschalk, Florian Dreyer, Alexander Mehlhorn, Anke Röser, Markus Walther
OBJECTIVE: Percutaneous correction of a hallux valgus deformity with or without transfer metatarsalgia. INDICATIONS: Hallux valgus deformity up to 20° intermetatarsal angle, without instability of the first tarsometatarsal joint. CONTRAINDICATIONS: Symptomatic arthritis of the first metatarsophalangeal joint, as well as instability of the first tarsometatarsal joint. SURGICAL TECHNIQUE: Percutaneous performed osteotomy of the distal metatarsal 1 in combination with a medial closing wedge osteotomy of the proximal phalanx of the first toe...
April 18, 2018: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/29663091/anatomical-feasibility-study-of-flexor-hallucis-longus-transfer-in-treatment-of-achilles-tendon-and-posteromedial-portal-of-ankle-arthroscopy
#3
Haijiao Mao, Linger Wang, Wenwei Dong, Zhenxin Liu, Weigang Yin, Dachuan Xu, Keith L Wapner
PURPOSE: The aim of this study was to evaluate the occurrence of anatomical variations of the musculotendinous junction of the flexor hallucis longus (FHL) muscle, the relationship between FHL tendon or muscle and the tibial neurovascular bundle at the level of the posterior ankle joint in human cadavers. METHODS: Seventy embalmed feet from 20 male and 15 female cadavers, the cadavers' mean age was 65.4 (range from 14 to 82) years, were dissected and anatomically classified to observe FHL muscle morphology define the relationship between FHL tendon or muscle and the tibial neurovascular bundle...
April 16, 2018: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29659379/bony-reconstruction-of-the-anterior-glenoid-rim
#4
Laurent B Willemot, Bassem T Elhassan, Olivier Verborgt
Recurrent anterior shoulder instability is associated with glenohumeral bone loss. Glenoid deficiency compromises the concavity-compression mechanism. Medial Hill-Sachs lesions can result in an off-track humeral position. Anterior glenoid reconstruction or augmentation prevents recurrence by addressing the pathomechanics. In Bristow and Latarjet procedures, the coracoid process is harvested for conjoint tendon transfer, capsular reinforcement, and glenoid rim restoration. Complications and the nonanatomic nature of the procedure have spurred research on graft sources...
April 13, 2018: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/29650376/trapezius-muscle-transfer-for-restoration-of-elbow-extension-in-a-traumatic-brachial-plexus-injury
#5
Hamza M Alrabai, Martin G Gesheff, Ahmed I Hammouda, Janet D Conway
Voluntary elbow extension is essential for optimal upper limb positioning required for daily living activities, particularly above-shoulder maneuvers. The authors present a case of traumatic brachial plexus injury in which paralysis of the musculature selectively supplied by the posterior cord was based on magnetic resonance imaging and nerve conduction studies. An attempt at a radial nerve graft at another center was not effective. Ipsilateral hand function improved after multiple local tendon transfers were performed...
April 9, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29627930/flexor-digitorum-longus-tendon-transfer-to-the-navicular-tendon-to-tendon-repair-is-stronger-compared-with-interference-screw-fixation
#6
Daniel Marsland, Joanna M Stephen, Toby Calder, Andrew A Amis, James D F Calder
PURPOSE: To assess whether early rehabilitation could be safe after flexor digitorum longus (FDL) tendon transfer, the current biomechanical study aimed to measure tendon displacement under cyclic loading and load to failure, comparing a traditional tendon-to-tendon (TT) repair with interference screw fixation (ISF). METHODS: 24 fresh-frozen cadaveric below knee specimens underwent FDL tendon transfer. In 12 specimens a TT repair was performed via a navicular bone tunnel...
April 7, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29626695/multi-functional-electrospun-antibacterial-core-shell-nanofibrous-membranes-for-prolonged-prevention-of-post-surgical-tendon-adhesion-and-inflammation
#7
K T Shalumon, Chialin Sheu, Chih-Hao Chen, Shih-Heng Chen, Gils Jose, Chang-Yi Kuo, Jyh-Ping Chen
The possibility of endowing an electrospun anti-adhesive barrier membrane with multi-functionality, such as lubrication, prevention of fibroblast attachment and anti-infection and anti-inflammation properties, is highly desirable for the management of post-surgical tendon adhesion. To this end, we fabricated core-shell nanofibrous membranes (CSNMs) with embedded silver nanoparticles (Ag NPs) in the poly(ethylene glycol) (PEG)/poly(caprolactone) (PCL) shell and hyaluronic acid (HA)/ibuprofen in the core. HA imparted a lubrication effect for smooth tendon gliding and reduced fibroblast attachment, while Ag NPs and ibuprofen functioned as anti-infection and anti-inflammation agents, respectively...
April 4, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29624053/large-scale-differentiation-and-site-specific-discrimination-of-hydroxyproline-isomers-by-electron-transfer-higher-energy-collision-dissociation-ethcd-mass-spectrometry
#8
Fengfei Ma, Rui-Xiang Sun, Daniel Tremmel, Sara Sackett, Jon Odorico, Lingjun Li
3- and 4- hydroxyprolines (HyP) are regioisomers that play different roles in various species and organs. Despite their distinct functions inside cells, they are generally considered indistinguishable using mass spectrometry due to their identical masses. Here, we demonstrate, for the first time, that characteristic w ions can be produced by electron-transfer/higher energy collision dissociation (EThcD) dual fragmentation technique to confidently discriminate 3-HyP/ 4-HyP isomers. An integrated and high throughput strategy was developed which combined online LC separation with EThcD for large-scale differentiation of 3-HyP/4-HyP in complex samples...
April 6, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29609996/surgical-management-of-stage-2-adult-and-pediatric-acquired-flatfoot-without-tendon-transfer-or-arthrodesis-a-retrospective-study
#9
Ashim Wadehra, Lawrence M Fallat, Robert Jarski
Posterior tibial tendon dysfunction (PTTD) is a common pathology of the foot and ankle. Numerous techniques are available to reconstruct the flatfoot. Fusions and tendon transfers are popular methods; however, a wide range of complications have been associated with these procedures. The objective of the present study was to demonstrate the outcomes of reconstructive surgery for flatfoot correction without tendon transfer or arthrodesis. We performed a retrospective study of 43 patients and 56 feet who had undergone flatfoot reconstructive surgery from November 2011 to June 2016, with a mean follow-up period of 60 weeks (range 12 to 60 months)...
March 30, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29605951/future-perspectives-in-the-management-of-nerve-injuries
#10
Susan E Mackinnon
AIM:  The author presents a solicited "white paper" outlining her perspective on the role of nerve transfers in the management of nerve injuries. METHODS:  PubMed/MEDLINE and EMBASE databases were evaluated to compare nerve graft and nerve transfer. An evaluation of the scientific literature by review of index articles was also performed to compare the number of overall clinical publications of nerve repair, nerve graft, and nerve transfer. Finally, a survey regarding the prevalence of nerve transfer surgery was administrated to the World Society of Reconstructive Microsurgery (WSRM) results...
April 1, 2018: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/29603434/differences-in-in-vivo-muscle-fascicle-and-tendinous-tissue-behaviour-between-the-ankle-plantarflexors-during-running
#11
Adrian K M Lai, Glen A Lichtwark, Anthony G Schache, Marcus G Pandy
The primary human ankle plantarflexors, soleus (SO), medial gastrocnemius (MG) and lateral gastrocnemius (LG), are typically regarded as synergists and play a critical role in running. However, due to differences in muscle-tendon architecture and joint articulation, the muscle fascicles and tendinous tissue of the plantarflexors may exhibit differences in their behaviour and interactions during running. We combined in-vivo dynamic ultrasound measurements with inverse dynamics analyses to identify and explain differences in muscle fascicle, muscle-tendon unit (MTU) and tendinous tissue (SEE) behaviour of the primary ankle plantarflexors across a range of steady-state running speeds...
March 30, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29589499/teres-major-tendon-transfer-in-the-treatment-of-irreparable-posterosuperior-rotator-cuff-tears
#12
A Kolk, J F Henseler, F J Overes, J Nagels, R G H H Nelissen
Aims Since long-term outcome of teres major tendon transfer surgery for irreparable posterosuperior rotator cuff (RC) tears is largely unknown, the primary aim of this study was to evaluate the long-term outcome of the teres major transfer. We also aimed to report on the results of a cohort of patients with a similar indication for surgery that underwent a latissimus dorsi tendon transfer. Patients and Methods In this prospective cohort study, we reported on the long-term results of 20 consecutive patients with a teres major tendon transfer for irreparable massive posterosuperior RC tears...
March 1, 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29582684/strength-of-interference-screw-fixation-to-cuboid-vs-pulvertaft-weave-to-peroneus-brevis-for-tibialis-posterior-tendon-transfer-for-foot-drop
#13
Daniel Marsland, Joanna M Stephen, Toby Calder, Andrew A Amis, James D F Calder
BACKGROUND: Tibialis posterior (TP) tendon transfer is an effective treatment for foot drop. Currently, standard practice is to immobilize the ankle in a cast for 6 weeks nonweightbearing, risking postoperative stiffness. To assess whether early active dorsiflexion and protected weightbearing could be safe, the current study assessed tendon displacement under cyclic loading and load to failure, comparing the Pulvertaft weave (PW) to interference screw fixation (ISF) in a cadaveric foot model...
March 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29578933/complex-iatrogenic-clubfoot-is-it-a-real-entity
#14
Massimiliano Dragoni, Armando Gabrielli, Pasquale Farsetti, Diego Bellini, Pierluigi Maglione, Ernesto Ippolito
In our study, we aimed to demonstrate whether a complex iatrogenic clubfoot really exists; identify the causative mechanisms; and determine the outcome if properly treated. We observed 54 clubfeet previously treated unsuccessfully by manipulation and casting elsewhere. All the feet had been classified at diagnosis as typical clubfeet. In 26 cases, the cast had slipped down, entrapping the foot in a plantar-flexed position. Nine clubfeet out of those 26 cases presented the clinical features of a complex iatrogenic deformity...
March 23, 2018: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/29552476/latissimus-dorsi-tendon-transfer-with-acromial-osteotomy-for-massive-irreparable-rotator-cuff-tear
#15
Nicholas R Pagani, Antonio Cusano, Xinning Li
Latissimus dorsi tendon transfer is an effective option for young and active patients with massive irreparable posterosuperior rotator cuff tears and intact subscapularis tendon. This approach has been shown to relieve pain and improve shoulder function in both the short and long term. We describe a surgical technique using an acromial osteotomy to better expose the greater tuberosity for the tendon transfer without disrupting the deltoid muscle. The latissimus dorsi tendon is reinforced with a human dermal collagen matrix (GraftJacket; Wright Medical Group) for additional augmentation of the muscle to gain more excursion for the tendon transfer to the greater tuberosity...
February 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29552466/arthroscopic-transfer-of-the-conjoined-tendon-coracoid-tip-complex-for-anterior-shoulder-instability
#16
Jin Tang, Jinzhong Zhao
In the treatment of anterior shoulder instability, there are various conditions in which a sling effect is needed to enhance anterior stability. The traditional Bristow-Latarjet procedure provides a sling effect but destroys or does not purposely protect the coracoacromial (CA) arch, which may result in superior instability. To preserve the CA arch and create a sling to enhance the anterior-inferior side of the shoulder, we introduce an arthroscopic technique to transfer the conjoined tendon-coracoid tip complex (CTCTC) with the intention to keep the CA ligament intact to the utmost...
January 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29544488/influence-of-surgery-involving-tendons-around-the-knee-joint-on-ankle-motion-during-gait-in-patients-with-cerebral-palsy
#17
Seung Yeol Lee, Soon-Sun Kwon, Chin Youb Chung, Kyoung Min Lee, Ki Hyuk Sung, Sangwoo Kim, Moon Seok Park
BACKGROUND: Simultaneous motion of the knee and ankle joints is required for many activities including gait. We aimed to evaluate the influence of surgery involving tendons around the knee on ankle motion during gait in the sagittal plane in cerebral palsy patients. METHODS: We included data from 55 limbs in 34 patients with spastic cerebral palsy. Patients were followed up after undergoing only distal hamstring lengthening with or without additional rectus femoris transfer...
March 15, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29541035/alterations-in-leg-extensor-muscle-tendon-unit-biomechanical-properties-with-ageing-and-mechanical-loading
#18
REVIEW
Christopher McCrum, Pamela Leow, Gaspar Epro, Matthias König, Kenneth Meijer, Kiros Karamanidis
Tendons transfer forces produced by muscle to the skeletal system and can therefore have a large influence on movement effectiveness and safety. Tendons are mechanosensitive, meaning that they adapt their material, morphological and hence their mechanical properties in response to mechanical loading. Therefore, unloading due to immobilization or inactivity could lead to changes in tendon mechanical properties. Additionally, ageing may influence tendon biomechanical properties directly, as a result of biological changes in the tendon, and indirectly, due to reduced muscle strength and physical activity...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29534316/design-and-fabrication-of-a-hierarchically-structured-scaffold-for-tendon-to-bone-repair
#19
Chunlei Zhu, Suphannee Pongkitwitoon, Jichuan Qiu, Stavros Thomopoulos, Younan Xia
A hierarchically structured scaffold is designed and fabricated for facilitating tendon-to-bone repair. The scaffold is composed of three regions with distinct functions: (i) an array of channels to guide the in-growth of cells and aligned deposition of collagen fibers, as well as integration of the scaffold with the tendon side, (ii) a region with a gradient in mineral composition to facilitate stress transfer between tendon and bone, and (iii) a mineralized inverse opal region to promote the integration of the scaffold with the underlying bone...
March 13, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29528722/biomechanical-evaluation-of-circumtibial-and-transmembranous-routes-for-posterior-tibial-tendon-transfer-for-dropfoot
#20
Emilio Wagner, Pablo Wagner, Diego Zanolli, Rubén Radkievich, Gunther Redenz, Rodrigo Guzman
BACKGROUND: Tibialis posterior tendon transfer is performed when loss of dorsiflexion has to be compensated. We evaluated the circumtibial (CT), above-retinaculum transmembranous (TMAR), and under-retinaculum transmembranous (TMUR) transfer gliding resistance and foot kinematics in a cadaveric foot model during ankle range of motion (ROM). METHODS: Eight cadaveric foot-ankle distal tibia specimens were dissected free of soft tissues on the proximal end, applying an equivalent force to 50% of the stance phase to every tendon, except for the Achilles tendon...
March 1, 2018: Foot & Ankle International
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