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tendon 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/29117835/spontaneous-rupture-of-the-extensor-pollicis-longus-with-the-extensor-pollicis-brevis-deformity
#2
Kazuo Ikeda, Naoki Osamura, Kaoru Tada
This paper examines three cases of spontaneous ruptures of the extensor pollicis longus (EPL) with the extensor pollicis brevis (EPB) deformity. The patients ranged from 39 to 71 years old. Non-dominant hands were involved in all three cases. There were no trauma nor pathological cause of EPL ruptures. A tendon transfer using the extensor indicis proprius was performed in each case. Intraoperative findings showed hypoplastic EPB in one case and EPB defects in two cases. A weak or defective EPB puts an excessive load on the EPL, which might be one of the causes of spontaneous EPL rupture...
December 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/29111420/viscoelastic-shear-lag-model-to-predict-the-micromechanical-behavior-of-tendon-under-dynamic-tensile-loading
#3
Jiayu Wu, Hong Yuan, Longyuan Li, Kunjie Fan, Shanguang Qian, Bing Li
Owing to its viscoelastic nature, tendon exhibits stress rate-dependent breaking and stiffness function. A Kelvin-Voigt viscoelastic shear lag model is proposed to illustrate the micromechanical behavior of the tendon under dynamic tensile conditions. Theoretical closed-form expressions are derived to predict the deformation and stress transfer between fibrils and interfibrillar matrix while tendon is dynamically stretched. The results from the analytical solutions demonstrate that how the fibril overlap length and fibril volume fraction affect the stress transfer and mechanical properties of tendon...
October 27, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/29101976/repair-of-pronator-quadratus-with-partial-muscle-split-and-distal-transfer-for-volar-plating-of-distal-radius-fractures
#4
REVIEW
Hui-Kuang Huang, Jung-Pan Wang, Ming-Chau Chang
Flexor tendon injury is a rare, but serious, complication after volar plate fixation for distal radius fractures. The plate position and prominence at the watershed line are contributing factors that cause flexor tendon injury. With the standard volar approach, the pronator quadratus (PQ) is typically elevated off the radial attachment. The distal part of the plate is often visible after repair of the PQ. We describe a "PQ-splitting" technique for covering the distal edge of the plate if primary PQ repair cannot completely cover the distal part of the plate...
November 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29099896/reverse-shoulder-arthroplasty-and-latissimus-dorsi-tendon-transfer
#5
Mihir Sheth, Jia-Wei Kevin Ko, Surena Namdari
In a systematic review, we critically examined and synthesized the results of individual studies on reverse shoulder arthroplasty (RSA) with latissimus dorsi tendon transfer. Two electronic databases were searched. For each included study, 2 reviewers evaluated the quality of its methods and retrieved data. In cases in which outcomes data were similar between studies, data were pooled using frequency-weighted (FW) mean values to generate summary outcomes. Seven studies met the inclusion and exclusion criteria, and 133 patient cases were reviewed...
September 2017: American Journal of Orthopedics
https://www.readbyqxmd.com/read/29095059/tendon-transfer-surgery-focus-on%C3%A2
#6
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/29079740/anatomical-study-of-the-neurovascular-in-flexor-hallucis-longus-tendon-transfers
#7
Haijiao Mao, Wenwei Dong, Zengyuan Shi, Weigang Yin, Dachuan Xu, Keith L Wapner
The transfer of the flexor hallucis longus tendon or flexor digitorum longus tendon is frequently used for the treatment of posterior tibial tendon insufficiency or chronic Achilles tendinopathy. According to several anatomical studies, harvesting the flexor hallucis longus (FHL) tendon may cause nerve injury. Sixty-eight embalmed feet were dissected and anatomically classified to define the relationship between Henry's knot and the plantar nerves. Two different configurations were identified. In Pattern 1, which was observed in 64 specimens (94...
October 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29078829/what-do-you-do-with-the-achilles-if-you-have-no-fancy-toys
#8
REVIEW
Rajiv Shah, Sampat Dumbre Patil
Surgical management of Achilles disorders warrants excision of the degenerated tendon and removal of impinging bone. Resulting defects can be bridged by various methods. Although FHL is the most commonly used tendon for transfer, large defects in cases of chronic Achilles ruptures may be bridged by use of a distant donor tendon. Bony anchorage of a lengthened or transferred tendon into the calcaneus can be done with suture anchors or with interference screws. In developing countries, such implants may not be available or affordable, necessitating the adoption of innovative ways to anchor tendons into the calcaneus...
December 2017: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/29078827/insertional-tendinopathy-of-the-achilles-debridement-primary-repair-and-when-to-augment
#9
REVIEW
Rachel J Shakked, Steven M Raikin
Insertional Achilles tendinopathy is a degenerative enthesopathy associated with pain and dysfunction. Nonsurgical management is first attempted for a period of 3 to 6 months and may consist of physical therapy with eccentric training and other modalities. Surgical treatment can be successful with a variety of approaches. A thorough debridement through a midline tendon-splitting approach is associated with high satisfaction rates. Flexor hallucis longus transfer to augment the repair is considered in older, heavier patients or if more than 50% of the tendon was debrided...
December 2017: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/29073905/therapeutic-application-of-t-regulatory-cells-in-composite-tissue-allotransplantation
#10
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
#11
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/29065767/results-of-heterodigital-flexor-digitorum-profundus-hemi-tendon-transfer-for-23-flexor-tendon-injuries-in-zones-1-or-2
#12
Aude Bommier, Duncan McGuire, Patrick Boyer, Asan Rafee, Sami Razali, Christophe Oberlin
We report outcomes of reconstruction of zone 1 or 2 flexor tendon injuries using a heterodigital hemi-tendon transfer of the flexor digitorum profundus in 23 fingers of 23 patients. At mean follow-up of 57 months, the mean total active motion of the three finger joints including the metacarpophalangeal joint was 128 degrees preoperatively and 229 degrees at final follow up. According to Strickland criteria, the function was excellent for 14 fingers, good for seven fingers and poor for two fingers. The subgroup analysis showed that the results were better in cases of primary surgery, children, and for the index and little fingers...
January 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/29059116/management-of-failed-rotator-cuff-repair-in-young-patients
#13
Bassem T Elhassan, Ryan M Cox, Dave R Shukla, Julia Lee, Anand M Murthi, Robert Z Tashjian, Joseph A Abboud
Management of failed rotator cuff repair may be difficult, especially in young patients. Various nonmodifiable and modifiable patient factors, including age, tendon quality, rotator cuff tear characteristics, acute or chronic rotator cuff tear, bone quality, tobacco use, and medications, affect rotator cuff repair healing. Surgical variables, such as the technique, timing, tension on the repair, the biomechanical construct, and fixation, as well as the postoperative rehabilitation strategy also affect rotator cuff repair healing...
November 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/29051900/previous-rotator-cuff-repair-is-associated-with-inferior-clinical-outcomes-after-reverse-total-shoulder-arthroplasty
#14
Edward J W Shields, Denise M Koueiter, Tristan Maerz, Adam Schwark, J Michael Wiater
BACKGROUND: Although recent evidence suggests that any prior shoulder surgery may cause inferior shoulder arthroplasty outcomes, there is no consensus on whether previous rotator cuff repair (RCR) is associated with inferior outcomes after reverse total shoulder arthroplasty (RTSA). PURPOSE: To retrospectively compare outcomes in patients who underwent RTSA with and without previous RCR. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Patients with prior RCR and those without previous shoulder surgery (control) who underwent RTSA for cuff tear arthropathy or irreparable cuff tear were retrospectively identified from a prospective database...
October 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29042331/the-first-experience-of-triple-nerve-transfer-in-proximal-radial-nerve-palsy
#15
Mohammadreza Emamhadi, Sasan Andalib
BACKGROUND: Injury to distal of posterior cord of brachial plexus leads to palsy of the radial and axillary nerves. The symptoms are usually motor deficits of the deltoid muscle, triceps brachii muscle, and the extensor muscles of the wrist, thumb and fingers. Tendon transfers, nerve grafts, and nerve transfers are options of surgical treatment of proximal radial nerve palsy to restore some motor functions. Tendon transfer is painful, requires a long immobilization, and decreases donor muscle strength; nevertheless, nerve transfer produces promising outcome...
October 14, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29039226/reconstruction-of-traumatic-dorsal-loss-of-the-thumb-four-different-surgical-approaches
#16
Roberto Adani, Raffaele Mugnai, Giovanna Petrella
BACKGROUND: This article outlines our methods for thumb reconstruction following dorsal skin loss injury located between the metacarpophalangeal joint (MPj) and the entire nail affecting skin, nail, tendon, and bone in different combinations but with intact sensate palmar skin. METHODS: Between 1990 and 2015, 24 patients were treated for dorsal thumb defects using 4 different surgical techniques. Five cases of dorsal compound traumatic loss were reconstructed by custom-made dorsal great toe transfer...
October 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/29026828/objective-outcomes-of-minimally-invasive-temporalis-tendon-transfer-for-prolonged-complete-facial-paralysis
#17
Michal Brichacek, Babar Sultan, Kofi D Boahene, Lisa Ishii, Patrick J Byrne
OBJECTIVES: We describe an approach to reanimation of complete, prolonged facial paralysis using minimally invasive temporalis tendon transfer (MIT3) by the melolabial or transoral approach. Objective outcome measures are evaluated based on symmetry, and grading of preoperative/post-operative results and the scar at the melolabial fold. STUDY DESIGN: Retrospective cohort study. METHODS: Twenty-five patients undergoing the MIT3 technique were studied...
August 2017: Plastic Surgery
https://www.readbyqxmd.com/read/28986075/the-scope-of-upper-limb-surgery-for-tetraplegics-role-of-tendon-transfers-and-universal-cuff
#18
Mukul Mohindra, Paritosh Gogna, Sukhbir Singh Sangwan, Sahil Gaba, Zile Singh Kundu
OBJECTIVE: The aim of this study was to evaluate the role of tendon transfers and universal cuff in restoring hand function in tetraplegic patients. METHODS: Twenty-one upper limbs on 12 tetraplegic patients (9 males and 3 females); mean age: 42.2 years (range 22-58 years) with a spinal cord injury at or distal to C6, were included in this study. Key pinch was restored using Brachioradialis to Flexor Pollicis Longus transfer and hook using Pronator Teres to Flexor Digitorum Profundus transfer...
October 4, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28983225/revision-achilles-reconstruction-with-hamstring-autograft-and-fhl-tendon-transfer-in-an-athlete
#19
Sydney C Karnovsky, Mark C Drakos
No abstract text is available yet for this article.
October 2017: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
https://www.readbyqxmd.com/read/28980032/-rupture-of-the-tendon-of-the-tibialis-anterior-muscle-etiology-clinical-symptoms-and-treatment
#20
REVIEW
H Waizy, B Bouillon, C Stukenborg-Colsman, D Yao, S Ettinger, L Claassen, C Plaass, K Danniilidis, D Arbab
Ruptures of the tendon of the tibialis anterior muscle tend to occur in the context of degenerative impairments. This mainly affects the distal avascular portion of the tendon. Owing to the good compensation through the extensor hallucis longus and extensor digitorum muscles, diagnosis is often delayed. In addition to the clinical examination, magnetic resonance inaging (MRI) diagnostics are of particular importance, although damage or rupture of the tendon can also be demonstrated sonographically. Therapeutic measures include conservative or operative measures, depending on the clinical symptoms...
October 4, 2017: Der Unfallchirurg
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