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https://www.readbyqxmd.com/read/29228408/-biomechanical-evaluation-of-rehabilitation-after-surgical-repair-of-achilles-tendon-ruptures
#1
Marlene Mauch, Markus Ulrich, Xaver Kaelin, Bernhard Segesser, Jochen Paul
Background Muscles and tendons are subjected to a high level of stress in everyday life and sports. This often leads to injuries and is associated with training failure and reduced performance as well as with high costs for treatment and rehabilitation. Fast and successful treatment is therefore very important, both from an athletic and economic point of view. This study aims to demonstrate the relevance of biomechanical procedures for the objective monitoring of rehabilitation. At the same time, the results are to be used to establish progress and evaluation criteria for an efficient and controlled rehabilitation...
December 2017: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/29223629/a-new-clinical-sign-of-lumbrical-plus%C3%A2-finger
#2
Frédéric A Schuind, Fabian Moungondo, Pierre Van Wetter
Paradoxical finger extension is the classical clinical presentation of the lumbrical plus syndrome. We report a new additional sign, increased metacarpophalangeal flexion of the involved finger when the patient tries to make a fist. Three cases of lumbrical tightness are discussed, illustrating this new sign in 3 different clinical settings. The new sign was present in all 3 cases. Lumbrical tenotomy corrected the paradoxical interphalangeal extension and partly the increased metacarpophalangeal flexion. The lumbrical tendon has a relatively high moment arm relative to the metacarpophalangeal joint, which could explain the basis of this clinical sign...
December 6, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29223409/obtaining-adequate-tension-for-extensor-hallucis-longus-tendon-rupture-repair-using-wide-awake-surgery-a-case-report
#3
Takenori Matsuda, Akira Taniguchi, Koji Hayashi, Yasuaki Nakanishi, Yasuhito Tanaka
Wide-awake surgery has potential advantages for treating extensor or flexor tendon injury. We present a case of chronic extensor hallucis longus injury treated with turn-down reconstruction using wide-awake surgery with a selective nerve block. To the best of our knowledge, this is the first such case reported. The patient had dropped a knife proximal to the right hallux metatarsophalangeal joint. Because direct suturing was thought to be difficult, turn-down reconstruction was performed under a selective nerve block...
December 7, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29218649/treatment-of-flexor-tendon-reconstruction-failures-multicentric-experience-with-brunelli-active-tendon-implant
#4
A Poggetti, M Novi, M Rosati, D Ciclamini, M Scaglione, B Battiston
INTRODUCTION: Secondary repair of flexor tendon injuries remain a challenging procedure for hand surgeons. Usually, secondary reconstruction should be performed by staged approach. When the tendon and pulley integrity are intact, tenolysis may be the first surgical option. One-/two-stage tendon grafts are suggested when the integrity of flexor tendon is compromised. Active tendon implants (Brunelli prostheses) may represent an efficient option in patients with a poor prognosis, as well as whenever classical techniques fail...
December 7, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29218364/ultrasound-evaluation-of-stress-injuries-and-physiological-adaptations-in-the-fingers-of-adolescent-competitive-rock-climbers
#5
Kathryn Garcia, Diego Jaramillo, Erika Rubesova
BACKGROUND: The impact of high-intensity, repetitive training on the fingers of adolescent climbers is relatively unknown. OBJECTIVE: To evaluate this effect by ultrasound (US) and to confirm some findings by magnetic resonance imaging (MRI). MATERIALS AND METHODS: The US study was performed in 20 adolescent rock climbers (ages 10-17 years) and 6 non-climbing controls (ages 11-15 years). US was used to examine the third digit of the right hand for differences in thickness of soft tissue, flexor and extensor tendon, volar plate and bony and growth plate adaptations...
December 7, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/29217766/ultrasonographic-scoring-system-for-superficial-digital-flexor-tendon-injuries-in-horses-intra-and-inter-rater-variability
#6
Rafael Alzola Domingo, Chris M Riggs, David S Gardner, Sarah L Freeman
Superficial digital flexor tendon (SDFT) tendinopathy is an important musculoskeletal problem in horses. The study objective was to validate an ultrasonographic scoring system for SDFT injuries. Ultrasonographic images from 14 Thoroughbred racehorses with SDFT lesions (seven core; seven diffuse) and two controls were blindly assessed by five clinicians on two occasions. Ultrasonographic parameters evaluated were: type and extent of the injury, location, echogenicity, cross-sectional area and longitudinal fibre pattern of the maximal injury zone (MIZ)...
December 7, 2017: Veterinary Record
https://www.readbyqxmd.com/read/29212436/estimation-of-individual-thigh-muscle-volumes-from-a-single-slice-muscle-cross-sectional-area-and-muscle-thickness-using-magnetic-resonance-imaging-in-patients-with-knee-osteoarthritis
#7
Koun Yamauchi, Akito Yoshiko, Shigetoshi Suzuki, Chisato Kato, Hiroshi Akima, Takayuki Kato, Koji Ishida
PURPOSE: This study aimed to identify the best single-slice anatomical muscle cross-sectional area (CSA) and muscle thickness (MT) on magnetic resonance imaging (MRI) to estimate the overall individual muscle volumes (MVs) of knee extensors and flexors in patients with knee osteoarthritis (KOA). METHODS: Twelve patients (24 legs; 4 men and 8 women) with KOA underwent a 1.5-Tesla axial MRI scan in the femoral region of interest (ROI), between the lesser trochanter and rectus femoris tendon...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29195712/arthrodesis-versus-carpometacarpal-preservation-in-key-grip-procedures-in-tetraplegic-patients-a-comparative-study-of-40-cases
#8
Bertrand Coulet, Thomas Waitzenegger, Jacques Teissier, Cyril Lazerges, Michel Chammas, Charles Fattal, Adeline Cambon-Binder
PURPOSE: Constructing a lateral key pinch (KP) is a universal aim of any functional upper limb surgery program for tetraplegia. Three stages are required: (1) activating the pinch mechanism by flexor pollicis longus tenodesis to the radius or by tendon transfer to the flexor pollicis longus, (2) simplifying the polyarticular chain, and (3) positioning the thumb column. We compared 2 techniques for accomplishing the latter stage, 1 utilizing arthrodesis of the carpometacarpal joint (CMC) and 1 that did not require arthrodesis of the CMC...
November 29, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29182386/in-vivo-evaluation-of-effects-of-sedation-on-results-of-acoustoelastography-of-the-superficial-digital-flexor-tendons-in-clinically-normal-horses
#9
Diego De Gasperi, Samantha L Dzierzak, Peter Muir, Ray Vanderby, Sabrina H Brounts
OBJECTIVE To assess the effects of sedation on results of acoustoelastography of the superficial digital flexor tendons (SDFTs) in clinically normal horses. ANIMALS 27 clinically normal horses. PROCEDURES For each horse, the pathology index (PI) for the SDFT of each thoracic limb was determined by use of acoustoelastography at 4 locations (5, 10, 15, and 20 cm distal to the accessory carpal bone). Horses were evaluated before and after they were sedated with a combination of detomidine hydrochloride (0.01 mg/kg, IV) and butorphanol tartrate (0...
December 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/29171303/flexor-hallucis-longus-muscle-and-tendon-transfer-for-the-treatment-of-achilles-tendon-wounds
#10
Michael R Anderson, Derek E Bell, John P Ketz
No abstract text is available yet for this article.
November 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/29169630/kinetic-analysis-of-canine-gait-on-the-effect-of-failure-tendon-repair-and-tendon-graft
#11
Yu-Shiuan Cheng, Ramona Reisdorf, Alyssa Vrieze, Steven L Moran, Peter C Amadio, Kai-Nan An, Chunfeng Zhao
Kinetic analysis of canine gait has been extensively studied, including normal and abnormal gait. However, no research has looked into how flexor tendon injury and further treatment would affect the walking pattern comparing to the uninjured state. Therefore, this study was aimed to utilize a portable pressure walkway system, which has been commonly used for pedobarographic and kinetic analysis in the veterinary field, to examine the effect of a failed tendon repair and tendon graft reconstruction on canine digit kinetics during gait...
November 20, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29166314/step-cut-lengthening-a-technique-for-treatment-of-flexor-pollicis-longus-tendon-rupture
#12
Chew-Wei Chong, Shih-Heng Chen
Reconstruction of a tendon defect is a challenging task in hand surgery. Delayed repair of a ruptured flexor pollicis longus (FPL) tendon is often associated with tendon defect. Primary repair of the tendon is often not possible, particularly after debridement of the unhealthy segment of the tendon. As such, various surgical treatments have been described in the literature, including single-stage tendon grafting, 2-stage tendon grafting, flexor digitorum superficialis tendon transfer from ring finger, and interphalangeal joint arthrodesis...
November 21, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29161769/influence-of-biceps-brachii-tendon-mechanical-properties-on-elbow-flexor-force-steadiness-in-young-and-old-males
#13
Rowan R Smart, Stéphane Baudry, Andrey Fedorov, Samantha L Kuzyk, Jennifer M Jakobi
Elbow flexor force steadiness (FS) depends on strength and decreases with age. Achilles tendon mechanics effect standing balance and isometric plantarflexion FS. This study investigated the influence of distal biceps brachii (BB) tendon mechanics and elbow flexor strength on age-related decline in FS. Nine young (23±2 years) and 9 old (77±5 years) males performed submaximal isometric elbow flexion tasks at low (2.5, 5, 10% maximal voluntary contraction (MVC)) and high (20, 40, 60, 80%MVC) forces in a neutral forearm position...
November 21, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29152595/identification-of-equid-herpesvirus-2-in-tissue-engineered-equine-tendon
#14
Roisin Wardle, Jane A Pullman, Sam Haldenby, Lorenzo Ressel, Marion Pope, Peter D Clegg, Alan Radford, James P Stewart, Mohammed Al-Saadi, Philip Dyer, Mandy J Peffers
Background: Incidental findings of virus-like particles were identified following electron microscopy of tissue-engineered tendon constructs (TETC) derived from equine tenocytes. We set out to determine the nature of these particles, as there are few studies which identify virus in tendons per se, and their presence could have implications for tissue-engineering using allogenic grafts. Methods: Virus particles were identified in electron microscopy of TETCs. Virion morphology was used to initially hypothesise the virus identity...
2017: Wellcome Open Research
https://www.readbyqxmd.com/read/29148083/macroscopic-and-microscopic-analyses-in-flexor-tendons-of-the-tarsometatarso-phalangeal-joint-of-ostrich-struthio-camelus-foot-with-energy-storage-and-shock-absorption
#15
Rui Zhang, Dianlei Han, Gang Luo, Lei Ling, Guoyu Li, Qiaoli Ji, Jianqiao Li
Flexor tendons function as energy storage and shock absorption structures in the tarsometatarso-phalangeal joint (TMTPJ) of ostrich feet during high-speed and heavy-load locomotion. In this study, mechanisms underlying the energy storage and shock absorption of three flexor tendons of the third toe were studied using histology and scanning electron microscopy (SEM). Macroscopic and microscopic structures of the flexor tendons in different positions of TMTPJ were analyzed. Histological slices showed collagen fiber bundles of all flexor tendons in the middle TMTPJ were arranged in a linear-type, but in the proximal and distal TMTPJ, a wavy-type arrangement was found in the tendon of the M...
November 17, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/29145347/fingertip-winding-suture-pull-out-suture-technique-for-flexor-tendon-repair-in-zone-i
#16
Mostafa Mahmoud, Motaz Elian, Abdalah Seif Elnasr
Injuries to flexor tendons in zone I has always been challenging during repair. Over the time several techniques were developed and modified to achieve the highest repair strength and thus the best functional outcome. These techniques vary from pull-out sutures with internal and external fixation to the use of bone anchors. All techniques were accompanied with advantages and disadvantages as well as postoperative morbidities related to certain techniques. In the present technique we introduce a subperiosteal pull-out suturing technique...
December 2017: Techniques in Hand & Upper Extremity Surgery
https://www.readbyqxmd.com/read/29142095/patterns-of-intermuscular-inhibitory-force-feedback-across-cat-hindlimbs-suggest-a-flexible-system-for-regulating-whole-limb-mechanics
#17
Mark A Lyle, T Richard Nichols
Prior work has suggested that Golgi tendon organ feedback, via its distributed network linking muscles spanning all joints, could be used by the nervous system to help regulate whole limb mechanics if appropriately organized. We tested this hypothesis by characterizing the patterns of intermuscular force dependent feedback between the primary extensor muscles spanning the knee, ankle and toes in decerebrate cat hindlimbs. Intermuscular force feedback was evaluated by stretching tendons of selected muscles in isolation and in pairwise combinations and then measuring the resulting force dependent intermuscular interactions...
November 15, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29137727/the-quantitative-evaluation-of-the-relationship-between-the-forces-applied-to-the-palm-and-carpal-tunnel-pressure
#18
Kazutoshi Kubo, Yu-Shiuan Cheng, Boran Zhou, Kai-Nan An, Steven L Moran, Peter C Amadio, Xiaoming Zhang, Chunfeng Zhao
Carpal tunnel syndrome (CTS) is the most common entrapment neuropathy occurring in upper limbs. The etiology, however, has not been fully understood yet. Median nerve could be compressed by either increase of carpal tunnel pressure (CTP) or direct impingement when it is forced toward to carpal ligament especially in wrist flexion leading to CTS development. Thus, the increase of carpal tunnel pressure is considered an important role in CTS development. It has been identified that forces applied to the palm would affect the CTP...
November 4, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29134318/the-impact-of-different-peripheral-suture-techniques-on-the-biomechanical-stability-in-flexor-tendon-repair
#19
B Wieskötter, M Herbort, M Langer, M J Raschke, D Wähnert
PURPOSE: Flexor tendon repair consists of circumferential peripheral sutures in combination with core sutures to avoid fraying and reduces the exposure of suture material on tendon surface. The peripheral suture adds up to a tenfold increase of the biomechanical stability compared to the core suture alone. The purpose of our study was to determine the most favourable peripheral repair technique for tendon repair. METHODS: Seventy-two porcine flexor tendons underwent standardized tenotomy and repair using one of the following six methods (n = 12): simple-running (SR), simple-locking (SL), Halsted-mattress (HM), lin-locking (LL), Lembert-mattress (LM), and Silfverskiöld cross-stich (SCS) suture technique...
November 13, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29132787/distal-biceps-brachii-tendon-transfer-for-re-establishing-extrinsic-finger-function-feasibility-study-in-cadavers
#20
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
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