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Tendon transfers

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https://www.readbyqxmd.com/read/28072735/localized-type-volkmann-s-contracture-treated-with-tendon-transfer-and-tension-reduced-early-mobilization-a-case-report
#1
Yoshio Kaji, Osamu Nakamura, Konosuke Yamaguchi, Sachiko Tobiume, Tetsuji Yamamoto
RATIONALE: For localized type Volkmann's contracture, in which degeneration of the flexor digitorum profundus (FDP) muscle to one or two fingers and restriction of finger extension occur, dissection or excision of the affected muscle is usually recommended. However, these surgical procedures need relatively wide exposure of the muscle, because the FDP muscle is in the deep portion of the forearm. PATIENT CONCERNS: In this report, the case of a 35-year-old woman with localized type Volkmann's contracture is presented...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28071819/evidence-that-interfibrillar-load-transfer-in-tendon-is-supported-by-small-diameter-fibrils-and-not-extrafibrillar-tissue-components
#2
Spencer E Szczesny, Kristen L Fetchko, George R Dodge, Dawn M Elliott
Collagen fibrils in tendon are believed to be discontinuous and transfer tensile loads through shear forces generated during interfibrillar sliding. However, the structures that transmit these interfibrillar forces are unknown. Various extrafibrillar tissue components (e.g., glycosaminoglycans, collagens XII and XIV) have been suggested to transmit interfibrillar loads by bridging collagen fibrils. Alternatively, collagen fibrils may interact directly through physical fusions and interfibrillar branching. The objective of this study was to test whether extrafibrillar proteins are necessary to transmit load between collagen fibrils or if interfibrillar load transfer is accomplished directly by the fibrils themselves...
January 10, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28062353/indentation-across-interfaces-between-stiff-and-compliant-tissues
#3
Oliver E Armitage, Michelle L Oyen
Bone-tendon, bone-ligament and bone-cartilage junctions are multi-tissue interfaces that connect materials that differ by two orders of magnitude in mechanical properties, via gradual variations in mineral content and matrix composition. These sites mediate load transfer between highly dissimilar materials and are consequently a primary site of injury during orthopedic failure. Given the large incidence rate and the lack of suitable surgical solutions for their regeneration or repair, characterization of their natural structure and subsequent replication through tissue engineering is important...
January 3, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28052836/functional-recovery-following-an-l-lengthening-local-tendon-flap-for-extensor-pollicis-longus-chronic-ruptures
#4
Luis Lobo-Escolar, Isabel López Moreno, Marta Pérez Montoya, Manel Bosch-Aguilá
PURPOSE: Extensor indicis proprius tendon transfer has been considered the reference standard technique for extensor pollicis longus (EPL) chronic ruptures, but relevant complications have been reported. We describe a new reconstructive technique for chronic EPL ruptures and assess functional recovery after this procedure. METHODS: We observed 31 patients who fulfilled inclusion criteria an average of 6.8 months after treatment. An L-shaped local tendon flap was prepared by making a transverse incision to the middle of the tendon and then longitudinally toward the end of one of the tendon stumps...
January 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28050536/functional-and-clinical-results-achieved-in-congenital-clubfoot-patients-treated-by-ponseti-s-technique
#5
Pedro Augusto Jaqueto, Guilherme Salgado Martins, Fernando Saddi Mennucci, Cintia Kelly Bittar, José Luís Amim Zabeu
OBJECTIVES: To analyze and evaluate functional and clinical results in patients with congenital clubfoot treated with Ponseti's technique. METHODS: This study evaluated 31 patients diagnosed with 51 congenital clubfeet, treated between April 2006 and September 2011 with Ponseti's technique. The patients who did not achieve an equinus correction with manipulation were treated with Achilles tenotomy. An anterior tibial tendon transfer was performed in patients who maintained residual adduction...
November 2016: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28040320/semimembranosus-tenosynovitis-diagnosis-and-management-of-a-commonly-missed-cause-of-posteromedial-knee-pain
#6
Joel K Melton, Arman Memarzadeh, William H Dunbar, Mervyn J Cross
BACKGROUND: In orthopedic and sports medicine literature there is minimal information regarding accurate diagnosis and the treatment options for tenosynovitis of the distal semimembranosus tendon. After reviewing the literature, the authors question both the etiology and treatment of this condition. Previous descriptions have associated the condition primarily with the endurance athlete but we have noted multiple cases in which this is a condition common to the 'sprinter' as well. There has been very little mention of this condition in recent literature but the most recent complete description of operative treatment for this condition recommends both tendon transfer and concomitant arthroscopy...
December 28, 2016: Knee
https://www.readbyqxmd.com/read/28027238/free-functioning-gracilis-muscle-transfer-for-elbow-flexion-reconstruction-after-traumatic-adult-brachial-pan-plexus-injury-where-is-the-optimal-distal-tendon-attachment-for-elbow-flexion
#7
Andrés A Maldonado, Santiago Romero-Brufau, Michelle F Kircher, Robert J Spinner, Allen T Bishop, Alexander Y Shin
BACKGROUND: Reconstruction after pan-plexus root avulsions often includes gracilis free functioning muscle transfer. For elbow flexion reconstruction, the free functioning muscle transfer distal tendon is inserted into the biceps tendon or more distally (i.e., flexor digitorum profundus/flexor pollicis longus tendons) for combined elbow and finger flexion; the theoretical drawback of the latter approach is weaker elbow flexion. The authors compared elbow flexion strength with a biceps tendon versus a flexor digitorum profundus/flexor pollicis longus tendon attachment to determine which insertion point resulted in better elbow flexion...
January 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28026732/-spontaneous-tendon-ruptures-in-the-rheumatoid-hand
#8
J Pech, D Veigl, M Vlček
A spontaneous tendon rupture is a direct consequence of rheumatoid inflammation and can appear without any noticeable impact, often during sleep. The patient then presents with inability to flex or extend metacarpophalageal or interphalangeal joints. Multiple ruptures resulting in impaired function of several fingers can also occur and markedly limit the hand's grip strength. A tear may arise from either mechanical injury to the tendon along its course over bone or connective tissues, or by biochemical action of lysosomal enzymes, released during the inflammation process, on the connective tissue of the tendon...
2016: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28024870/arthroscopic-assisted-latissimus-dorsi-tendon-transfer-for-massive-irreparable-rotator-cuff-tears-technique-and-short-term-follow-up-of-patients-with-pseudoparalysis
#9
Ulunay Kanatlı, Mustafa Özer, Muhammet Baybars Ataoğlu, Burak Yağmur Öztürk, Orkun Gül, Mehmet Çetinkaya, Tacettin Ayanoğlu
PURPOSE: To describe a modified technique for arthroscopic-assisted transfer of the latissimus dorsi tendon in a selected group of patients with irreparable rotator cuff tears and pseudoparalysis and to evaluate its short-term results. METHODS: Fifteen patients with irreparable rotator cuff tears and pseudoparalysis treated by arthroscopic-assisted latissimus dorsi tendon transfer were included. The mean patient age was 61.53 ± 6.24 years (range, 52-71 years)...
December 23, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28005772/correction-of-residual-static-and-dynamic-labial-deviations-in-a-paralyzed-face-after-free-gracilis-muscle-transplantation
#10
Ricardo Horta, Inês Correia-Sá, Ricardo Nascimento, Alvaro Silva, José Amarante
Free muscle flap transfer is currently the procedure of choice for longstanding facial paralysis to restore symmetry both at rest and when smiling. However, movements obtained are generally localized, unidirectional, and philtrum centralization and lower lip movement is not proportionally achieved. The stability of free flap insertion at the lips also interferes with the results, as gradual disinsertion and shifting of the nasolabial fold can be caused by repetitive movements. Asymmetry of smile can also be caused by lip depressor inactivity due to marginal mandibular paralysis, and both dynamic and static procedures are often required after dynamic reanimation...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27997073/effects-of-growth-on-muscle-tendon-and-aponeurosis-tissues-in-rabbit-shank-musculature
#11
Markus Böl, Kay Leichsenring, Tobias Siebert
There exist several studies using morphological analyses of skeletal muscles to obtain a better understanding of muscle structure. The structural information obtained are primarily determined from single muscle components using individual animals of discrete ages. Further, little is known about changing dimensions of the aponeurosis, which is an important load-transferring interface in muscle mechanics. Thus, the aim of the present study was to determine how the muscle, tendon, and particularly the aponeurosis geometry of the rabbit shank musculature (M...
December 20, 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/27993587/percutaneous-needle-tenotomy-for-the-treatment-of-muscle-and-tendon-contractures-in-adults-with-brain-damage-results-and-complications
#12
Flavia Coroian, Claire Jourdan, Jérome Froger, Claire Anquetil, Olivier Choquet, Bertand Coulet, Isabelle Laffont
OBJECTIVE: To study the results and complications of percutaneous needle tenotomy (PNT) of superficial retracted tendons in brain damaged patients. Muscle and tendon contractures are common in this population and can lead to severe functional impairment. Care management is commonly based on open surgical tenotomy. PNT is a mini-invasive surgical procedure suspected to be safer among frail patients. DESIGN: Prospective observational study SETTING: University Hospital Physical Medicine and Rehabilitation (PM&R) and Orthopedic Surgery Departments...
December 16, 2016: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/27988149/a-technique-for-facial-reanimation-the-partial-temporalis-muscle-tendon-transfer-with-a-fascia-lata-sling
#13
Thomas Edward Pidgeon, Radovan Boca, Fazel Fatah
BACKGROUND: This report describes the results of a surgical procedure for facial reanimation. This single-stage technique involves the orthodromic transfer of only a superficial segment of the temporalis tendon. This is extended with fascia lata to achieve elevation of the oral commissure along the desired vector in the paralysed hemi-face. METHODS: A retrospective case note review was performed. Patients' photographs were objectively evaluated with Facial Assessment by Computer Evaluation (FACE) software...
November 10, 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/27941532/modification-of-the-alignment-between-the-tibial-tubercle-and-the-trochlear-groove-induced-by-temporary-hemiepiphysiodesis-for-lower-extremity-angular-deformities-a-trigonometric-analysis
#14
Dimitri Ceroni, Amira Dhouib, Laura Merlini, Georgios Kampouroglou
: This study aimed to predict the modification of the alignment between the tibial tubercle (TT) and the trochlear groove (TG) that occurs during femoral or tibial hemiepiphysiodesis. MRI scans of 541 knees were retrospectively reviewed to determine the distances between the cranial insertion of the patellar tendon on the TT and the femoral physis (FP)/tibial physis (TP). Thereafter, we developed a trigonometric formula to calculate the predicted change of the TT-TG distance that occurs during hemiepiphysiodesis around the knee using both the planned angular correction as well as the length between the physis (both distal femoral and proximal tibial) and the insertion of the patellar tendon of the TT...
December 9, 2016: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/27932695/posture-dependent-corticomotor-excitability-differs-between-the-transferred-biceps-in-individuals-with-tetraplegia-and-the-biceps-of-nonimpaired-individuals
#15
Carrie L Peterson, Lynn M Rogers, Michael S Bednar, Anne M Bryden, Michael W Keith, Eric J Perreault, Wendy M Murray
Background Following biceps transfer to enable elbow extension in individuals with tetraplegia, motor re-education may be facilitated by greater corticomotor excitability. Arm posture modulates corticomotor excitability of the nonimpaired biceps. If arm posture also modulates excitability of the transferred biceps, posture may aid in motor re-education. Objective Our objective was to determine whether multi-joint arm posture affects corticomotor excitability of the transferred biceps similar to the nonimpaired biceps...
December 8, 2016: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/27918896/the-physical-mechanism-of-inhomogeneous-magnetization-transfer-mri
#16
Alan P Manning, Kimberley L Chang, Alex L MacKay, Carl A Michal
Inhomogeneous MT (ihMT) is a new magnetic resonance imaging technique that shows promise for myelin selectivity. Materials with a high proportion of lipids, such as white matter tissue, show a reduced intensity in magnetic resonance images acquired with selective prepulses at positive and negative offsets simultaneously compared to images with a single positive or negative offset prepulse of the same power. This effect was initially explained on the basis of hole-burning in inhomogeneously broadened lines of the lipid proton spin system...
January 2017: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/27909664/arthroscopic-assisted-lower-trapezius-tendon-transfer-for-massive-irreparable-posterior-superior-rotator-cuff-tears-surgical-technique
#17
Bassem T Elhassan, Eduard Alentorn-Geli, Andrew T Assenmacher, Eric R Wagner
Tendon transfer options to reconstruct a massive irreparable posterior-superior rotator cuff tear include latissimus dorsi, teres major, or lower trapezius transfer. We previously described the lower trapezius transfer using a 2-incision approach, which includes a medial incision to harvest the lower trapezius and lateral transacromial incision to expose the rotator cuff and then perform the transfer through a deep tunnel connecting these 2 sites. In this report, we describe an arthroscopic-assisted technique of lower trapezius transfer augmented with an Achilles tendon allograft to reconstruct an irreparable posterior-superior rotator cuff tear...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27900541/tendon-transfer-to-unossified-bone-in-a-porcine-model-potential-implications-for-early-tibialis-anterior-tendon-transfers-in-children-with-clubfeet
#18
Matthew A Halanski, Sam Abrams, Rachel Lenhart, Ellen Leiferman, Teresa Kaiser, Emily Pierce, Rachel Rebekah Franklin, Dayton Opel, Kenneth J Noonan, Thomas D Crenshaw
PURPOSE: Tibialis anterior tendon transfers (TATT) are commonly performed in young children following Ponseti casting for clubfeet. The classic TATT involves advancing the tendon through a hole drilled in the ossified cuneiform. The aim of this study was to determine if tendons transferred through unossified bones have untoward effects on subsequent bone development. METHOD: Twenty-five piglets underwent one of five surgical procedures. An 18-gauge needle was then used to place a tunnel through the bony or cartilaginous portion of the calcaneus (through direct visualization) and isolated slips of the flexor digitorum superficialis (FDS) were placed through the tunnels, as determined by surgical procedure...
December 2016: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/27900313/semitendinosus-and-gracilis-free-muscle-tendon-graft-for-repair-of-massive-rotator-cuff-tears-surgical-technique
#19
Antonio Gigante, Carlo Bottegoni, Giuseppe Milano, Michele Riccio, Luca Dei Giudici
Massive rotator cuff tears are difficult to treat surgically due to retraction, degeneration and fraying of the ends of torn tendons, severe fatty infiltration and atrophy of the respective muscles. Procedures developed to close the gap between the rotator cuff and the greater tuberosity of the humerus, such as soft tissue release may be inadequate for large tears. Human or porcine dermal allografts still have uncertain benefits, and tendon transfers seem to be associated with poor outcomes, donor site morbidity and altered mechanics...
July 2016: Joints
https://www.readbyqxmd.com/read/27900311/biological-enhancement-of-graft-tunnel-healing-in-anterior-cruciate-ligament-reconstruction
#20
Maristella F Saccomanno, Luigi Capasso, Luca Fresta, Giuseppe Milano
The sites where graft healing occurs within the bone tunnel and where the intra-articular ligamentization process takes place are the two most important sites of biological incorporation after anterior cruciate ligament (ACL) reconstruction, since they help to determine the mechanical behavior of the femur-ACL graft-tibia complex. Graft-tunnel healing is a complex process influenced by several factors, such as type of graft, preservation of remnants, bone quality, tunnel length and placement, fixation techniques and mechanical stress...
July 2016: Joints
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