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https://www.readbyqxmd.com/read/28460573/biomechanical-analysis-of-suture-anchor-vs-tenodesis-screw-for-fhl-transfer
#1
Mark C Drakos, Michael Gott, Sydney C Karnovsky, Conor I Murphy, Bridget A DeSandis, Noah Chinitz, Daniel Grande, Nadeen Chahine
BACKGROUND: Chronic Achilles injury is often treated with flexor hallucis longus (FHL) tendon transfer to the calcaneus using 1 or 2 incisions. A single incision avoids the risks of extended dissections yet yields smaller grafts, which may limit fixation options. We investigated the required length of FHL autograft and biomechanical profiles for suture anchor and biotenodesis screw fixation. METHODS: Single-incision FHL transfer with suture anchor or biotenodesis screw fixation to the calcaneus was performed on 20 fresh cadaveric specimens...
April 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28459126/localization-of-nerve-entry-points-as-targets-to-block-spasticity-of-the-deep-posterior-compartment-muscles-of-the-leg
#2
Shuaiyu Hu, Lifan Zhuo, Xiaoming Zhang, Shengbo Yang
To identify the optimal body surface puncture locations and the depths of nerve entry points (NEPs) in the deep posterior compartment muscles of the leg, sixty lower limbs of thirty adult cadavers were dissected in prone position. A curved line on the skin surface joining the lateral to the medial epicondyles of the femur was taken as a horizontal reference line (H). Another curved line joining the lateral epicondyle of the femur to the lateral malleolus was designated the longitudinal reference line (L). Following dissection, the NEPs were labeled with barium sulfate and then subjected to spiral computed tomography scanning...
April 29, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28436371/pigmented-villonodular-synovitis-various-manifestations-inconsistent-terminology-and-treatment-cases-study
#3
Paweł Kokoszka, Waldemar Woźniak, Łukasz Łapaj, Jacek Kruczyński
Pigmented villonodular synovitis (PVNS) as well as tenosynovial giant cell tumor (TGCT) are both diagnosed and described in two forms, namely a localized and diffuse type. They form a diverse group of proliferative lesions in articular synovium and tendon sheaths. The inconsistent terminology impedes communication between patients, orthopedic surgeons, radiologists and pathologists, leading to misunderstandings and delaying treatment. In this paper, we present three cases of PVNS/TGCT (involving the fourth toe extensor tendon sheath, hip joint after resurfacing and flexor hallucis longus tendon sheath) together with suggestions regarding the unification of the terminology as well as diagnosis and treatment...
January 26, 2017: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28428826/the-reliability-of-shear-elastic-modulus-measurement-of-the-ankle-plantar-flexion-muscles-is-higher-at-dorsiflexed-position-of-the-ankle
#4
Junya Saeki, Tome Ikezoe, Masatoshi Nakamura, Satoru Nishishita, Noriaki Ichihashi
BACKGROUND: Excessive stiffness of lower limb muscles is associated with sports injuries. Therefore, the identification of a reliable measurement of the shear elastic modulus of various ankle plantar flexion muscles is required to evaluate lower leg sports injuries. This study investigated the reliable measurement of the shear elastic modulus of the ankle plantar flexion muscles at different ankle positions. METHODS: Twenty-three healthy young men (25.3 ± 3...
2017: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/28428648/ultrasound-of-ankles-in-the-diagnosis-of-complications-of-chikungunya-fever
#5
Roberto Mogami, João Luiz Pereira Vaz, Yêdda de Fátima Barcelos Chagas, Rodrigo Sperling Torezani, André de Almeida Vieira, Ana Célia Baptista Koifman, Yasmin Baptista Barbosa, Mirhelen Mendes de Abreu
OBJECTIVE: To describe the main ultrasound findings of chikungunya fever in the ankle. MATERIALS AND METHODS: This was a cross-sectional observational study involving 52 patients referred to the Hospital Universitário Pedro Ernesto and presenting with clinical and biochemical evidence of chikungunya fever. The examinations were performed by a radiologist with more than 20 years of experience in ultrasound. RESULTS: The predominant gender was female (in 88...
March 2017: Radiologia Brasileira
https://www.readbyqxmd.com/read/28394676/communication-of-contrast-in-the-flexor-hallucis-longus-tendon-with-other-pedal-tendons-at-the-master-knot-of-henry
#6
Sayed Ali, Nicole L Griffin, Whitney Ellis, Andrew J Meyr
It is important to have a full appreciation of lower-extremity anatomical relationships before undertaking diabetic foot surgery. We sought to evaluate the potential for communication of the flexor hallucis longus (FHL) tendon with other pedal tendons and plantar foot compartments at the master knot of Henry and to provide cadaveric images and computed tomographic (CT) scans of such communications. Computed tomography and subsequent anatomical dissection were performed on embalmed cadaveric limbs. Initially, 5 to 10 mL (1:4 dilution) of iohexol and normal saline was injected into the FHL sheath as it coursed between the two hallux sesamoids...
March 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/28390293/comparison-of-foot-muscle-morphology-and-foot-kinematics-between-recreational-runners-with-normal-feet-and-with-asymptomatic-over-pronated-feet
#7
Xianyi Zhang, Jeroen Aeles, Benedicte Vanwanseele
Over-pronated feet are common in adults and are associated with lower limb injuries. Studying the foot muscle morphology and foot kinematic patterns is important for understanding the mechanism of over-pronation related injuries. The aim of this study is to compare the foot muscle morphology and foot inter-segmental kinematics between recreational runners with normal feet and those with asymptomatic over-pronated feet. A total of 26 recreational runners (17 had normal feet and 9 had over-pronated feet) participated in this study and their foot type was assessed using the 6-item Foot Posture Index...
March 31, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28382835/severe-hallux-valgus-with-coalition-of-the-hallux-sesamoids-treated-with-modified-lapidus-procedure-a-case-report
#8
Toshinori Kurashige, Seiichi Suzuki
Coalition of the hallux sesamoids is an extremely rare condition. To our knowledge, only 1 case report has been published. We report a case of severe hallux valgus deformities with coalitions of the hallux sesamoids. The coalitions themselves were asymptomatic; however, this severe hallux valgus deformity needed to be surgically treated. The hallux sesamoids in both feet appeared to be fused and heart shaped on anteroposterior radiographs and dumbbell shaped on axial radiographs. It is known that postoperative incomplete reduction of the medial sesamoids can be a risk factor for the recurrence of hallux valgus...
April 1, 2017: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/28345775/quantification-of-the-position-and-depth-of-the-flexor-hallucis-longus-groove-in-euarchontans-with-implications-for-the-evolution-of-primate-positional-behavior
#9
Gabriel S Yapuncich, Erik R Seiffert, Doug M Boyer
OBJECTIVE: On the talus, the position and depth of the groove for the flexor hallucis longus tendon have been used to infer phylogenetic affinities and positional behaviors of fossil primates. This study quantifies aspects of the flexor hallucis longus groove (FHLG) to test if: (1) a lateral FHLG is a derived strepsirrhine feature, (2) a lateral FHLG reflects inverted and abducted foot postures, and (3) a deeper FHLG indicates a larger muscle. METHODS: We used linear measurements of microCT-generated models from a sample of euarchontans (n = 378 specimens, 125 species) to quantify FHLG position and depth...
March 27, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28333717/effect-of-resistance-exercise-on-muscle-metabolism-and-autophagy-in-sibm
#10
Jae-Hoon Jeong, Dae-Seung Yang, Dong-Ju Hwang, Joon-Yong Cho, Eun-Bum Kang
PURPOSE: Sporadic inclusion body myositis (sIBM), a muscular degenerative disease in the elderly, is an inflammatory myopathy characterized by muscle weakness in the wrist flexor, quadriceps, and tibialis anterior muscles. We aimed to identify the therapeutic effect of resistance exercise (RE) in improving sIBM symptoms in an sIBM animal model. METHODS: Six-week-old male Wistar rats were divided into a sham group (sham, n = 12), chloroquine-control group (CQ-con, n = 12), and chloroquine-RE group (CQ-RE, n = 12)...
March 23, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28296942/co-ingestion-of-carbohydrate-and-whey-protein-increases-fasted-rates-of-muscle-protein-synthesis-immediately-after-resistance-exercise-in-rats
#11
Wanyi Wang, Zhenping Ding, Geoffrey J Solares, Soon-Mi Choi, Bo Wang, Aram Yoon, Roger P Farrar, John L Ivy
The objective of the study was to investigate whether co-ingestion of carbohydrate and protein as compared with protein alone augments muscle protein synthesis (MPS) during early exercise recovery. Two months old rats performed 10 repetitions of ladder climbing with 75% of body weight attached to their tails. Placebo (PLA), whey protein (WP), or whey protein plus carbohydrate (CP) was then given to rats by gavage. An additional group of sedentary rats (SED) was used as controls. Blood samples were collected immediately and at either 1 or 2 h after exercise...
2017: PloS One
https://www.readbyqxmd.com/read/28282504/soleus-atrophy-is-common-after-the-nonsurgical-treatment-of-acute-achilles-tendon-ruptures-a-randomized-clinical-trial-comparing-surgical-and-nonsurgical-functional-treatments
#12
Juuso Heikkinen, Iikka Lantto, Tapio Flinkkila, Pasi Ohtonen, Jaakko Niinimaki, Pertti Siira, Vesa Laine, Juhana Leppilahti
BACKGROUND: It remains controversial whether nonsurgical or surgical treatment provides better calf muscle strength recovery after an acute Achilles tendon rupture (ATR). Recent evidence has suggested that surgery might surpass nonsurgical treatment in restoring strength after an ATR. PURPOSE: To assess whether magnetic resonance imaging (MRI) findings could explain calf muscle strength deficits and the difference between nonsurgical and surgical treatments in restoring calf muscle strength...
May 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28271939/bilateral-achilles-tendon-xanthomas-in-a-patient-with-cerebrotendinous-xanthomatosisa-case-report
#13
Mustafa Karakaplan, Emre Ergen, Gökay Görmeli, Mehmet Fatih Korkmaz, Nurzat Elmalı
Cerebrotendinous xanthomatosis is a rare, autosomal recessive, lipid storage disease with accumulation of cholestanol in most tissues, particularly in the Achilles tendons. We described a 23-year-old female patient who had progressive painfull swelling of both Achilles tendons due to cerebrotendinous xanthomatosis. We performed surgery on both-side Achilles tendon tumors. Wide degenerative areas of the tendons were resected, and the flexor hallucis longus tendon was harvested and transferred to reconstruct motion function...
January 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/28257673/midsubstance-tendinopathy-surgical-management
#14
REVIEW
William T DeCarbo, Mark J Bullock
Noninsertional Achilles tendinopathy often responds to nonoperative treatment. When nonoperative treatment fails, the clinician must distinguish between paratendinopathy and noninsertional tendinopathy. In paratendinopathy, myofibroblasts synthesize collagen, causing adhesions, and the paratenon may be released or excised. If a core area of tendinopathy is identified on MRI, the area is excised longitudinally and repaired with a side-to-side suture. If greater than 50% of the tendon diameter is excised, the authors recommend a short flexor hallucis longus tendon transfer with an interference screw...
April 2017: Clinics in Podiatric Medicine and Surgery
https://www.readbyqxmd.com/read/28255483/stenosing-tenosynovitis-of-the-flexor-hallucis-longus-tendon-associated-with-the-plantar-capsular-accessory-ossicle-at-the-interphalangeal-joint-of-the-great-toe
#15
Song Ho Chang, Takumi Matsumoto, Masashi Naito, Sakae Tanaka
This report presents a case of stenosing tenosynovitis of the flexor hallucis longus tendon associated with the plantar capsular accessory ossicle at the interphalangeal joint of the great toe, which was confirmed by intraoperative observation and was successfully treated with surgical resection of the ossicle. As the plantar capsular accessory ossicle was not visible radiographically due to the lack of ossification, ultrasonography was helpful for diagnosing this disorder.
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/28251615/stiffness-mapping-of-lower-leg-muscles-during-passive-dorsiflexion
#16
Guillaume Le Sant, Antoine Nordez, Ricardo Andrade, François Hug, Sandro Freitas, Raphaël Gross
It is challenging to differentiate the mechanical properties of synergist muscles in vivo. Shear wave elastography can be used to quantify the shear modulus (i.e. an index of stiffness) of a specific muscle. This study assessed the passive behavior of lower leg muscles during passive dorsiflexion performed with the knee fully extended (experiment 1, n = 22) or with the knee flexed at 90° (experiment 2, n = 20). The shear modulus measurements were repeated twice during experiment 1 to assess the inter-day reliability...
March 2, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28220191/anatomical-variations-of-flexor-hallucis-longus-tendon-increase-safety-in-hindfoot-endoscopy
#17
Jordi Vega, David Redó, Gabriela Savín, Francesc Malagelada, Miki Dalmau-Pastor
PURPOSE: The flexor hallucis longus (FHL) tendon is the main anatomical landmark during hindfoot endoscopy, and anatomical variations related to the FHL can pose a risk to the tibial nerve and posterior tibial vessels during hindfoot endoscopy. The aim of this study was to determine the distance between the FHL tendon and the tibial neurovascular bundle in the posterior ankle joint when an anatomical variant of the FHL is present. The hypothesis was that the shortest distance between the tibial neurovascular bundle and the FHL tendon in the working area of the hindfoot endoscopy is increased when an anatomical variant of the FHL is present...
February 20, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28207961/muscle-stiffness-of-posterior-lower-leg-in-runners-with-a-history-of-medial-tibial-stress-syndrome
#18
J Saeki, M Nakamura, S Nakao, K Fujita, K Yanase, N Ichihashi
Previous history of medial tibial stress syndrome (MTSS) is a risk factor for MTSS relapse, which suggests that there might be some physical factors that are related to MTSS development in runners with a history of MTSS. The relationship between MTSS and muscle stiffness can be assessed in a cross-sectional study that measures muscle stiffness in subjects with a history of MTSS, who do not have pain at the time of measurement, and in those without a history of MTSS. The purpose of this study was to compare the shear elastic modulus, which is an index of muscle stiffness, of all posterior lower leg muscles of subjects with a history of MTSS and those with no history and investigate which muscles could be related to MTSS...
February 16, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28163203/the-high-variability-of-the-chiasma-plantare-and-the-long-flexor-tendons-anatomical-aspects-of-tendon-transfer-in-foot-surgery
#19
Bettina Pretterklieber
As tendon transfer of the flexor hallucis longus (FHL) and the flexor digitorum longus (FDL) is an established procedure, exact knowledge of the formation of the chiasma plantare is of great interest. Although the quadratus plantae (QP) appears to play a major role, it has been rarely addressed in previous studies. The aim of the present study was to reinvestigate the formation of the chiasma plantare and the composition of the long flexor tendons in order to clarify the inexact and partly contradictory descriptions published from 1865 onward...
February 3, 2017: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/28156022/in-vivo-fascicle-behavior-of-the-flexor-hallucis-longus-muscle-at-different-walking-speeds
#20
A Péter, A Hegyi, T Finni, N J Cronin
Ankle plantar flexor muscles support and propel the body in the stance phase of locomotion. Besides the triceps surae, flexor hallucis longus muscle (FHL) may also contribute to this role, but very few in vivo studies have examined FHL function during walking. Here, we investigated FHL fascicle behavior at different walking speeds. Ten healthy males walked overground at three different speeds while FHL fascicle length changes were recorded with ultrasound and muscle activity was recorded with surface electromyography (EMG)...
February 3, 2017: Scandinavian Journal of Medicine & Science in Sports
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