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https://www.readbyqxmd.com/read/29447306/knotless-tape-suture-fixation-of-quadriceps-tendon-rupture-a-novel-technique
#1
James M Paci, Amanda Pawlak
Quadriceps tendon ruptures disrupt the extensor mechanism of the knee and require urgent surgical management. Traditional repair techniques have had mixed biomechanical and clinical results risking weakness and extensor lag. We describe a novel technique using tape suture and knotless anchors, which has performed superiorly during biomechanical testing and yielded terrific early clinical results.
January 2018: American Journal of Orthopedics
https://www.readbyqxmd.com/read/29437710/total-patellectomy-with-extensor-mechanism-reconstruction-following-pathological-fracture-due-to-patellar-ewing-s-sarcoma
#2
Eyad Alqasim, Abdulla Aljowder, Naji Alammari, Amani A Joudeh
A young patient presented with a progressive right knee pain and swelling that was worse on ambulation. Following appropriate investigations, he was confirmed having Ewing's sarcoma of the right patella. Two cycles of chemotherapy were initiated before he sustained a fall and a resultant pathological patellar fracture. He finally underwent a total right patellectomy and extensor mechanism reconstruction using Achilles tendon allograft in an attempt to eradicate the disease and salvage his knee extensor mechanism...
February 7, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29433467/effect-of-tendon-vibration-during-wide-pulse-neuromuscular-electrical-stimulation-nmes-on-muscle-force-production-in-people-with-spinal-cord-injury-sci
#3
Vanesa Bochkezanian, Robert U Newton, Gabriel S Trajano, Amilton Vieira, Timothy S Pulverenti, Anthony J Blazevich
BACKGROUND: Neuromuscular electrical stimulation (NMES) is commonly used in skeletal muscles in people with spinal cord injury (SCI) with the aim of increasing muscle recruitment and thus muscle force production. NMES has been conventionally used in clinical practice as functional electrical stimulation (FES), using low levels of evoked force that cannot optimally stimulate muscular strength and mass improvements, and thus trigger musculoskeletal changes in paralysed muscles. The use of high intensity intermittent NMES training using wide-pulse width and moderate-intensity as a strength training tool could be a promising method to increase muscle force production in people with SCI...
February 13, 2018: BMC Neurology
https://www.readbyqxmd.com/read/29424175/-experimental-study-on-staphylococcal-enterotoxin-promoting-tendon-bone-healing-after-reconstruction-of-anterior-cruciate-ligament-in-rabbits
#4
Chun-Bao Li, Chao Xue, Wei Qi, Ning Wang, Jing Xue, Xiao-Yong Wu, Juan-Li Zhu, Yang Liu, Yu-Jie Liu
OBJECTIVE: To explore highly agglutinative staphylococcin (HAS) pomoting on tendon-bone healing after reconstruction of anterior cruciate ligament(ACL) in rabbits. METHODS: Animal model of ACL reconstruction in 24 mature New Zealand white rabbits(3 months, 2.56 kg on average, either gender) were established using autologous digital long extensor tendon and randomly classified into 2 groups(HAS and control group), 12 rabbits for each group. HAS group was separately injected 0...
June 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29421069/technique-of-dynamic-flexor-digitorum-superficialis-transfer-to-lateral-bands-for-proximal-interphalangeal-joint-deformity-correction-in-severe-dupuytren-disease
#5
REVIEW
Michael J Schreck, Hayden S Holbrook, L Andrew Koman
Pseudo-boutonniere deformity is an uncommon complication from long-standing proximal interphalangeal (PIP) joint contracture in Dupuytren disease. Prolonged flexion contracture of the PIP joint can lead to central slip attenuation and resultant imbalances in the extensor mechanism. We present a technique of flexor digitorum superficialis (FDS) tendon transfer to the lateral bands to correct pseudo-boutonniere deformity at the time of palmar fasciectomy for the treatment of Dupuytren disease. The FDS tendon is transferred from volar to dorsal through the lumbrical canal and sutured into the dorsally mobilized lateral bands...
February 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29418119/leg-muscle-architecture-in-primates-and-its-correlation-with-locomotion-patterns
#6
Damiano Marchi, Carissa L Leischner, Francisco Pastor, Adam Hartstone-Rose
Bone biomechanical studies indicate that leg bone structure can be related to different locomotor patterns. The osteological correlates of extant primates' locomotion patterns and substrate use are important to consider when estimating corresponding behaviors of extinct primates. Here, we test if these same patterns are seen in the differences in leg muscular architecture. Muscle mass, fascicle lengths (FL), physiological cross-sectional area (PCSA), reduced PCSA (RPCSA) and tendon-to-muscle belly ratio were studied in 33 primate species (6 strepsirrhines, 14 platyrrhines and 13 catarrhines)...
March 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29417158/operative-treatment-algorithm-for-foot-deformities-in-charcot-marie-tooth-disease
#7
REVIEW
J W K Louwerens
The present article presents a short summary concerning the pathomechanisms and clinical presentation of foot deformities in Charcot-Marie-Tooth syndrome. Furthermore, a classification system is introduced and based on a recently performed review of the literature an operative treatment algorithm is provided. The operative technique of the following surgical procedures is described in more detail: 1. dorsiflexion osteotomy at the base of the 1st metatarsus, 2. dorsiflexion osteotomy at the base of a lesser metatarsal bone, 3...
February 7, 2018: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/29415617/sagittal-band-reconstruction-in-the-index-finger-using-a-modified-elson-technique
#8
Nobuyuki Takahashi, Kousuke Iba, Megumi Hanaka, Yasuhiro Ozasa, Kohei Kanaya, Toshihiko Yamashita
PURPOSE: The Elson technique is a rigid reconstruction method for a hypoplastic or absent sagittal band in the treatment of chronic extensor digitorum communis (EDC) tendon dislocation. We performed a modified procedure based on the Elson technique for reconstruction of the radial sagittal band in case involving the index finger. We investigated the postoperative outcomes of chronic EDC dislocation after treatment with the original and modified Elson technique. METHODS: We examined five fingers of five patients (2 males and 3 females) with a mean age of 41 years...
January 2018: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29413774/effectiveness-of-the-cobb-stainsby-excision-arthroplasty
#9
A H Matthews, N A Jagodzinski, M Westwood, J E Metcalfe, K T Trimble
BACKGROUND: Dislocated metatarsophalangeal joints from clawed or hammer toes can be a disabling consequence of several conditions. The Cobb-Stainsby forefoot arthroplasty combines partial phalangectomy (Stainsby) with extensor tendon transfer to the metatarsal head (Cobb). We present a retrospective, three surgeon case series of 215 toes in 126 patients. METHODS: Early results and complications were gathered from the medical charts of 126 patients who met the inclusion criteria...
February 2018: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29413772/increasing-the-safety-of-minimally-invasive-hallux-surgery-an-anatomical-study-introducing-the-clock-method
#10
Francesc Malagelada, Miki Dalmau-Pastor, Betlem Fargues, Maria Cristina Manzanares-Céspedes, Fernando Peña, Jordi Vega
BACKGROUND: The purpose of this study is to describe a simple and reproducible method to localize the neurological structures at risk and to describe a safe zone for hallux minimally invasive surgery (MIS) procedures. METHODS: Ten fresh-frozen cadaveric feet were dissected to identify the dorsomedial digital nerve (DMDN) and the dorsolateral digital nerve (DLDN) of the first toe. Axial sections were performed at the sites of metatarsal osteotomies. We documented the position of the nerves with respect to the extensor hallucis longus (EHL) tendon using a clock method superimposed on the axial section RESULTS: The DMDN was found at an average of 26...
February 2018: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29409868/structure-and-collagen-crimp-patterns-of-functionally-distinct-equine-tendons-revealed-by-quantitative-polarised-light-microscopy-qplm
#11
Ewa M Spiesz, Chavaunne T Thorpe, Philipp J Thurner, Hazel R C Screen
Structure-function relationships in tendons are directly influenced by the arrangement of collagen fibres. However, the details of such arrangements in functionally distinct tendons remain obscure. This study demonstrates the use of quantitative polarised light microscopy (qPLM) to identify structural differences in two major tendon compartments at the mesoscale: fascicles and interfascicular matrix (IFM). It contrasts functionally distinct positional and energy storing tendons, and considers changes with age...
January 31, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29409420/failed-reconstruction-of-the-extensor-pollicis-longus-in-a-patient-with-a-major-variation-of-the-extensor-indicis-proprius-tendon-a-case-report
#12
Gen Matsumae, Makoto Motomiya, Norimasa Iwasaki
Tendon transfer with extensor indicis proprius (EIP) has been performed widely for reconstructing ruptures of the extensor pollicis longus because of its simplicity and clinical outcome. We experienced a rerupture of the extensor pollicis longus restored by incorrect tendon transfer because of a major unrecognized variation in the anatomy of the EIP. Surgeons should perform such transfer with a detailed knowledge of the possible anatomical variations to avoid such serious complications.
March 2018: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/29409416/attrition-of-the-extensor-tendon-of-the-index-finger-following-an-avulsion-fracture-of-the-third-metacarpal
#13
Hiroshi Yamazaki, Shunsuke Miyaoka, Hiroyuki Kato
We report an avulsion fracture at the base of the third metacarpal involving the extensor carpi radialis brevis insertion and a resulting complication of attritional rupture of the extensor indicis proprius tendon and the extensor digitorum communis to the index finger, in a 67-year-old man.
March 2018: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/29409409/use-of-computed-tomography-in-determining-the-occurrence-of-dorsal-and-intra-articular-screw-penetration-in-volar-locking-plate-osteosynthesis-of-distal-radius-fracture
#14
Teik Wei Diong, Nor Hazla Mohamed Haflah, Abdul Yazid Mohd Kassim, Sharifah Majedah Idrus Al Habshi, Mohd Hassan Shukur
BACKGROUND: The use of volar locking plate in distal radius fracture can lead to extensor tendon rupture due to dorsal screw penetration. The aim of our study was to investigate the occurrence of dorsal and intra-articular screw penetration using CT scan after volar distal radius osteosynthesis for distal radius fractures. METHODS: Thirty patients who underwent distal volar locking plate for distal radius fracture were included in a retrospective study. In all 30 patients no dorsal and intra-articular screw penetration were detected on standard AP and lateral views of a plain radiograph...
March 2018: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/29409181/technique-tip-edl-to-ehl-double-loop-transfer-for-extensor-hallucis-longus-reconstruction
#15
Gonzalo F Bastías, Natalio Cuchacovich, Adam Schiff, Giovanni Carcuro, Manuel J Pellegrini
BACKGROUND: Extensor hallucis longus (EHL) tendon injuries often occur in the setting of lacerations to the dorsum of the foot. End-to-end repair is advocated in acute lacerations, or in chronic cases when the tendon edges are suitable for tension free repair. Reconstruction with allograft or autograft is advocated for cases not amenable to a primary direct repair. This is often seen in cases with tendon retraction and more commonly in the chronic setting. In many countries the use of allograft is very limited or unavailable making reconstruction with autograft and tendon transfers the primary choice of treatment...
December 6, 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29409066/extensor-mechanism-injury-in-the-pediatric-population-a-clinical-review
#16
William Cody Sessions, Matthew Herring, Walter H Truong
The extensor mechanism of the knee-consisting of the four muscles of the quadriceps, the quadriceps tendon, the patella, and the patellar ligament-is essential for lower extremity function during both standing and ambulation. The presence of articular cartilage and growing physes in the pediatric knee, coupled with the generation of significant tensile force, creates an opportunity for pathology unique to the pediatric population.Tibial tubercle fractures and patella injuries are quite rare, and even pediatric-trained orthopaedic surgeons may not be exposed to these injuries on a regular basis...
February 6, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29395745/early-quadriceps-tendon-rupture-after-primary-total-knee-arthroplasty
#17
Jigar Chhapan, Sukesh Rao Sankineani, T Chiranjeevi, Maryada V Reddy, Diwakar Reddy, A V Gurava Reddy
BACKGROUND: Extensor mechanism disruption following total knee arthroplasty (TKA) is a rare complication and results in significant morbidity and severe functional limitation. Quadriceps tendon rupture in the early postoperative period after TKA is one of them, of which there is a significant paucity of available information. METHODS: In this retrospective study of 2404 patients who underwent primary TKA between June 2015 to May 2016, there were 10 quadriceps tendon ruptures in seven patients (three bilateral, four unilateral) presented within three months after surgery...
January 30, 2018: Knee
https://www.readbyqxmd.com/read/29395632/predictors-of-clinical-success-in-runners-with-patellofemoral-pain-secondary-analyses-of-a-randomized-clinical-trial
#18
Jean-Francois Esculier, Laurent J Bouyer, Blaise Dubois, Jean Leblond, Mélanie Brisson, Luc Chau, Jean-Sébastien Roy
OBJECTIVES: To identify predictors of outcome to a rehabilitation program focused on education and management of training loads in runners with patellofemoral pain (PFP). DESIGN: Secondary analyses of a randomized clinical trial. METHODS: Fifty-eight runners with PFP (62% female, aged 31.2±6.6years, running 20.3±5.6km/week) were included in analyses. Following baseline collection of demographics, anthropometry, symptomatology, isometric strength, running mechanics and radiological data, runners were randomized to one of the three 8-week intervention program: (1) Education on symptoms management and training modifications; (2) Education+Exercise program; (3) Education+Gait retraining...
January 27, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29395600/ultrasound-assessment-of-extensor-pollicis-brevis-tendon-excursion-in-different-wrist-positions-in-healthy-people
#19
Edel Kelly, Richard Ellis, Wayne Hing
STUDY DESIGN: Cross-sectional, observational study. INTRODUCTION: There is little reported on the in vivo mechanics and behavior of extensor pollicis brevis (EPB) in relation to wrist position. Wrist position is known to significantly influence tendon excursion and therefore function of the digits. Ultrasound imaging (USI) can be used to assess in vivo tendon behavior and excursion. An improved knowledge of the excursion of the EPB tendon is important in understanding normal tendon mechanics and potentially pathological tendon disorders such as de Quervains tenosynovitis...
January 29, 2018: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/29395586/a-prospective-observational-assessment-of-unicortical-distal-screw-placement-during-volar-plate-fixation-of-distal-radius-fractures
#20
Agnes Z Dardas, Charles A Goldfarb, Martin I Boyer, Daniel A Osei, Christopher J Dy, Ryan P Calfee
PURPOSE: Although volar plating of the distal radius is performed frequently, the necessity of distal bicortical fixation in the metaphyseal and epiphyseal areas of the distal radius has not been proven. This study aimed primarily to quantify the ability of unicortical distal screws to maintain operative reduction of adult distal radius fractures and secondarily to determine if unicortical screw lengths could be predicted based on anatomical measurements. METHODS: This prospective trial enrolled 75 adult patients undergoing volar locking plate fixation of a unilateral distal radius fracture at a tertiary center...
January 25, 2018: Journal of Hand Surgery
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