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Tendon extensor

N Bouguennec, P Colombet
Chronic rupture of the patellar tendon is a severe injury that leads to dramatic functional consequences including lack of extension and walking difficulty. Surgery is the gold standard to treat this type of injury, but revision reconstructions are problematic because an ipsilateral graft was often harvested for the initial surgery. Because fibrotic tissues on the patellar tendon need to be debrided, another graft must be added to reinforce the tendon. We reported the case of a former semiprofessional handball player, a 29-year-old man who presented an iterative rupture with the fracture of the transverse patellar tunnel 6 months after reconstruction using a semitendinosus graft and suture repair...
2018: Case Reports in Orthopedics
Samer George Hakim, Ali Shakery Tehrany, Robert Wendlandt, Hans-Christian Jacobsen, Thomas Trenkle, Peter Sieg
PURPOSE: The fibula flap has been established for orofacial reconstruction following ablative surgery. Donor-site morbidity of the lower leg may be explained by the harvest technique and particularly by detachment of the M. extensor halluces longus (EHL) and M. extensor digitorum longus (EDL). MATERIAL AND METHODS: On cadaveric lower leg specimens, the tendons of the EHL and EDL were dissected at the proximal phalanges and loaded with corresponding weights. The average displacement of the muscle was evaluated during the harvesting procedure...
September 19, 2018: Journal of Cranio-maxillo-facial Surgery
Colter R Wichern, Kathryn C Skoglund, Joseph G O'Sullivan, Anora K Burwell, Joseph T Nguyen, Andrea Herzka, Jacqueline M Brady
BACKGROUND: The all-inside cruciate ligament graft preparation technique has become popular due to its utility in sparing a growing physis, preserving a tendon in ACL surgery, and/or reduction of pain. However, few studies have compared graft preparation techniques to determine the ideal construct for cruciate ligament reconstruction. We sought to compare biomechanical properties of two quadrupled all-inside cruciate ligament graft preparation techniques and three alternative all-inside graft preparation techniques that may be used when the available tendon is too short to be quadrupled...
October 10, 2018: Journal of Experimental Orthopaedics
Wei-Hsiu Hsu, Chun-Hao Fan, Pei-An Yu, Chi-Lung Chen, Liang-Tseng Kuo, Robert Wen-Wei Hsu
BACKGROUND: Increased body mass index (BMI) has been associated with poorer function in patients who have undergone anterior cruciate ligament (ACL) reconstruction. However, the effect of high BMI on muscle strength in these patients remained unclear. The current study aimed to compare knee muscle strength and Knee injury and Osteoarthritis Outcome Score (KOOS) in ACL-reconstructed patients with a variety of different BMIs. METHODS: From November 2013 to March 2016, we prospectively enrolled 30 patients who underwent ACL reconstruction (18-60 years of age)...
October 10, 2018: BMC Musculoskeletal Disorders
L Fraissler, K Horas, S Bölch, P Raab, M Rudert, M Walcher
OBJECTIVE: Restore the function of the tibialis anterior muscle, which is responsible for dorsiflexion and inversion of the foot. INDICATIONS: Spontaneous or traumatic rupture of the tibialis anterior tendon. CONTRAINDICATIONS: Patients with multimorbidity or lack of functional demands. SURGICAL TECHNIQUE: Direct repair of the tibialis anterior tendon with fiber-wire suture and augmentation with extensor hallucis longus tendon, potentially in combination with reinsertion of the tibialis anterior tendon in the medial cuneiform...
October 9, 2018: Operative Orthopädie und Traumatologie
Dimitris Challoumas, Paul D Kirwan, Dmytro Borysov, Christopher Clifford, Michael McLean, Neal L Millar
OBJECTIVE: To produce a best evidence synthesis of the clinical effects of topical glyceryl trinitrate (GTN) in the treatment of tendinopathies. DESIGN: A systematic review of published randomised controlled trials (RCTs) of the use of GTN in patients with tendinopathy. DATA SOURCES: MEDLINE, Embase, Scopus and CINAHL from database inception to January 2018. METHODS: We examined RCTs comparing the effects of topical GTN with either placebo or other treatments on tendinopathy...
October 9, 2018: British Journal of Sports Medicine
Sebastian M Dettmer, Uwe Schweigkofler, Reinhard Hoffmann
Ruptures of the extensor mechanism of the knee joint are rare but disabling injuries. Injuries occur on the basis of degeneration or acute trauma. The understanding of anatomy and biomechanical function plays an essential role for choosing the right diagnostic methods and initiating successful treatment. Besides clinical examination ultrasound is a cost efficient primary diagnostic measure. Additional MRI can be beneficial for partial tears or chronic ruptures. Non-operative treatment is suitable for minor partial ruptures with sustained function...
October 2018: Zeitschrift Für Orthopädie und Unfallchirurgie
Eleftherios Kellis
INTRODUCTION: Examination of the mechanical behavior of the hamstrings when acting as antagonists provides information about loading of this muscle group and its role for joint stability during forceful quadriceps contractions. The aim of this study was to quantify biceps femoris long head fascicle length (FL), angle of pennation (PA) and distal tendon/aponeurosis strain during maximum voluntary contraction efforts of the knee extensors using real-time ultrasound. METHODS: Fourteen participants performed passive joint movements and maximum voluntary knee extension and flexion efforts of the knee flexors at 0°, 45° and 90° of knee flexion...
October 3, 2018: European Journal of Applied Physiology
Michael Lonne, David S Sparks, Carl Stephan, Michael Wagels, Anthony Berger
BACKGROUND: The Extensor Pollicis Brevis (EPB) is an extrinsic thumb muscle whose main function is extension of the first metacarpophalangeal joint (MCPJ). It is subject to significant anatomical variation and may be absent, vestigial or have an anomalous distal attachment. Clinical examination of EPB is notoriously difficult and no reliable test has yet been described. We propose a novel test for the accurate examination of EPB. We sought to clarify the anatomical variations of EPB and to validate our clinical test using human cadaveric anatomical tests...
September 2018: Journal of Hand Surgery Asian-Pacific Volume
Deepak Samson, Manish Gupta
BACKGROUND: The terminal phalanx of the fingers carries the attachment of the Flexor Digitorum Profundus (FDP) on the volar surface and the extensor on the dorsal surface. Avulsion of these tendons has traditionally been repaired with pull-through sutures. Recently, bone anchor sutures have been found to be of comparable biomechanical strength but with the added advantage of technical ease and fewer complications. However, the dimensions of the bone, at the site of insertion of the anchors, have never been studied...
September 2018: Journal of Hand Surgery Asian-Pacific Volume
Takuma Wakasugi, Ritsuro Shirasaka
A 15-year-old male patient presented with difficulty extending his right thumb due to subluxation of the extensor pollicis longus (EPL) tendon. Physical examination showed that active motion of the thumb's metacarpophalangeal (MP) joint was 76° in flexion and -58° in extension. During active extension, the EPL tendon shifted onto the ulnar aspect of the MP joint, and the extensor pollicis brevis (EPB) tendon shifted onto the central dorsal course of the MP joint. After repositioning by adducting the thumb into the palm to extend the MP joint (dynamic tenodesis effect), active extension of the MP joint increased to -12°...
September 2018: Journal of Hand Surgery Asian-Pacific Volume
Jeongseok Oh, Hee Chang Ahn, Kwang Hyun Lee
Malignant peripheral nerve sheath tumor (MPNST) is a very rare type of sarcoma, with an incidence of 0.001%. MPNST has a 5-year survival rate near 80%, so successful reconstruction techniques are important to ensure the patient's quality of life. Sarcoma of the forearm is known for its poor prognosis, which leads to wider excision, making reconstruction even more challenging due to the unique anatomical structure and delicate function of the forearm. A 44-year-old male presented with a large mass that had two aspects, measuring 9×6 cm and 7×5 cm, on the dorsal aspect of the right forearm...
September 2018: Archives of Plastic Surgery
Sang Min Lee, Doo Hoe Ha, Soo Hong Han
PURPOSE: To investigate the difference between sonographic findings in extensor pollicis longus tendons rupture and other finger tendons rupture in patients sustaining hand and wrist trauma. METHODS: Twenty-four patients who presented with signs and symptoms clinically suspicious for tendon injury and surgically confirmed tendon rupture were included in this study. We analyzed 6 sonographic features: discontinuity of the tendon, pseudomass formation, decreased echogenicity of the tendon, retraction of the ruptured tendon, fluid collection within the tendon sheath, and the motion of the tendon...
2018: PloS One
Okan Aslantürk, Kadir Ertem, Emre Ergen, Muhammed Köroğlu
PURPOSE: The aim of this study was to evaluate short-term clinical and radiological results of extensor carpi radialis longus (ECRL) tendon ball arthroplasty for treatment of late-stage Kienböck's disease. METHODS: We retrospectively reviewed data of 19 patients suffering from Kienböck's treated with ECRL tendon ball arthroplasty between December 2014 and December 2016. Patients' clinical functions were assessed using grip strength, range of motion (ROM) of the wrist, QuickDASH, Mayo wrist score, and visual analog scale score...
May 2018: Journal of Orthopaedic Surgery
Ryoya Shiode, Hisao Moritomo
We developed a substitution technique for a sagittal band reconstruction for subluxation of the third extensor tendon at the metacarpophalangeal joint. Through this procedure, we attempted to supply a tether between the second and third extensor digitorum communis (EDC) tendons. A half-slip of the second EDC was interlaced to the third EDC tendon at the level of the third metacarpal head with the metacarpophalangeal joint in full flexion position; this ensured that the interlace of the graft serves as a direct stabilizer against ulnar subluxation...
September 26, 2018: Techniques in Hand & Upper Extremity Surgery
Z Cibula, M Hrubina, M Melišík, I Mudrák, L Nečas
PURPOSE OF THE STUDY The purpose of our retrospective study is to evaluate 5-year functional and radiological outcomes in patients following corrective osteotomy of the distal radius and ulnar osteotomy for malposition after a distal radius fracture, to identify differences in the outcomes of corrective osteotomies depending on the type of the original fracture according to the AO classification, the grade of arthritis of radiocarpal (RC) joint, surgical approach and the way of stabilisation of the osteotomy...
2018: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
Raphael Huber, Claudio Viecelli, Mario Bizzini, Bernd Friesenbichler, Markus Dohm-Acker, Thomas Rosenheck, Laurent Harder, Nicola A Maffiuletti
OBJECTIVE: Hamstring and patellar tendon autografts are the most frequently-used graft types for anterior cruciate ligament (ACL) reconstruction, with no consensus on their respective effects on thigh muscle strength. The objective of this study was to re-examine isokinetic knee extensor and flexor strength before and after ACL reconstruction with patellar and hamstring tendon grafts using a single-center and a relatively large database, where surgical, rehabilitation and testing procedures were strictly standardized for all patients...
September 25, 2018: Physician and Sportsmedicine
Fernando Fonseca
Objective: Retrospective study to evaluate the functional results of patients with total knee arthroplasty and rupture of the patellar tendon, submitted to transplantation of the extensor knee apparatus with fresh frozen allograft. Method: Nine patients, operated between 2003 and 2015, with a minimum of one year of follow-up. All patients were reviewed by performing a functional evaluation using the Knee Society score. Preoperative values were compared with those of the final evaluation...
September 2018: Revista Brasileira de Ortopedia
Yuki Fujihara, Hideyuki Ota, Kentaro Watanabe
Central slip tears often occur with concomitant hand injuries. However, the outcome of a central slip tear and the effect of concomitant injuries are rarely reported. We evaluated 67 fingers in 63 patients with central slip tears who underwent primary surgery in our hospital between April 2009 and June 2017. We performed multivariate analyses, with proximal interphalangeal (PIP) joint active range of motion (AROM) and existing extension lag greater than 10° as dependent variables and age, existence of concomitant fractures, skin defects, collateral ligament injuries, ruptured lateral bands, ruptured flexor tendons or vascular injury in the injured finger as independent variables...
October 2018: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
Robin Souron, Marie Oriol, Guillaume Y Millet, Thomas Lapole
While local vibration (LV) has been recently proposed as a potential modality for neuromuscular conditioning, no practical recommendations to optimize its effects have been published. Because changes in corticospinal excitability may reflect at which degree the neuromuscular function is modulated during LV exposure, this study investigated the effects of muscle length and vibration site on LV-induced on motor evoked potentials (MEPs) changes. Twenty-one subjects participated in a single session in which MEPs were evoked on the relaxed knee extensors (KE) during three conditions, i...
2018: Frontiers in Physiology
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