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https://www.readbyqxmd.com/read/28220619/the-palatal-interpterygoid-vacuities-of-temnospondyls-and-the-implications-for-the-associated-eye-and-jaw-musculature
#1
Florian Witzmann, Ingmar Werneburg
A diagnostic feature of temnospondyls is the presence of an open palate with large interpterygoid vacuities, unlike the closed palate of most other early tetrapods, in which the vacuities are either slit-like or completely absent. Attachment sites on neurocranium and palatal bones in temnospondyls allow the reconstruction of a powerful m. retractor bulbi and a large, sheet-like m. levator bulbi that formed the elastic floor of the orbit. This muscle arrangement indicates that temnospondyls were able to retract the eyeballs through the interpterygoid vacuities into the buccal cavity, like extant frogs and salamanders...
February 21, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28210184/surgical-treatment-of-a-rare-case-of-bilateral-ptosis-due-to-localized-ocular-amyloidosis
#2
Gianluca Scuderi, Solmaz Abdolrahimzadeh, Antonietta Troccola, Marco Mazzocchi, Santi Maria Recupero
We describe a rare case of a 31-year old woman with bilateral ptosis due to localized amyloidosis. She referred a nine-year history of ptosis and surgical treatment with frontalis suspension three years previously. Following complete ophthalmological examination and evaluation of the ptosis we carried out tarsal and fornix biopsy, which revealed accumulation of a weakly eosinophilic amyloid positive substance. We performed surgical correction using the levator aponeurosis-Müller's muscle complex re-adaptation technique and amyloid substance debulking in all the palpebral layers in the left eye...
July 2016: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/28208087/morphomechanical-alterations-in-the-medial-gastrocnemius-muscle-in-patients-with-a-repaired-achilles-tendon-associations-with-outcome-measures
#3
Wei-Chen Peng, Yi-Ping Chang, Yuan-Hung Chao, S N Fu, Christer Rolf, Tiffany Tf Shih, Sheng-Chu Su, Hsing-Kuo Wang
BACKGROUND: Functional deficits are found in ankles that have sustained an Achilles rupture. This study sought to evaluate and compare the morphomechanical characteristics of the medial gastrocnemius muscle in the legs of participants within six months of a unilateral Achilles repair to determine any correlations between those characteristics and objective outcomes and self-reported functional levels. METHODS: Fifteen participants were assessed via measurements of muscle morphologies (fascicle length, pennation angle, and muscle thickness) in a resting state, the mechanical properties of the proximal aponeurosis of the medial gastrocnemius muscle, the pennation angle during ramping maximal voluntary isometric contractions (MVIC), the heel raise test, and the Taiwan Chinese version of the Lower Extremity Functional Scale (LEFS-TC) questionnaire...
February 8, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28205264/the-influence-of-patellar-tendon-and-muscle-tendon-unit-stiffness-on-quadriceps-explosive-strength-in-man
#4
Garry J Massey, Thomas G Balshaw, Thomas M Maden-Wilkinson, Neale A Tillin, Jonathan P Folland
The influence of musculotendinous tissue stiffness on contractile rate of torque development (RTD) remains opaque. This study examined the relationships between both patellar tendon (PT) and vastus lateralis (VL) muscle-tendon unit (MTU) stiffness, and voluntary and evoked knee extension RTD. Fifty-two healthy untrained males completed duplicate laboratory sessions. Absolute and relative RTD was measured at 50 Nm/25%MVT increments from onset and sequentially during explosive voluntary and evoked octet (supramaximal stimulation: [8 pulses at 300 Hz]) isometric contractions...
February 15, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28199538/analysis-of-factors-associated-with-rhytidectomy-malpractice-litigation-cases
#5
Aron Kandinov, Sean Mutchnick, Vaibhuv Nangia, Peter F Svider, Giancarlo F Zuliani, Mahdi A Shkoukani, Michael A Carron
Importance: This study investigates the financial burden of medical malpractice litigation associated with rhytidectomies, as well as factors that contribute to litigation and poor defendant outcomes, which can help guide physician practices. Objective: To comprehensively evaluate rhytidectomy malpractice litigation. Data Sources and Study Selection: Jury verdict and settlement reports related to rhytidectomy malpractice litigations were obtained using the Westlaw Next database...
February 9, 2017: JAMA Facial Plastic Surgery
https://www.readbyqxmd.com/read/28198531/superficial-brachial-artery-a-possible-cause-for-idiopathic-median-nerve-entrapment-neuropathy
#6
Pilani Nkomozepi, Nkosi Xhakaza, Elaine Swanepoel
Nerve entrapment syndromes occur because of anatomic constraints at specific locations in both upper and lower limbs. Anatomical locations prone to nerve entrapment syndromes include sites where a nerve courses through fibro-osseous or fibromuscular tunnels or penetrates a muscle. The median nerve (MN) can be entrapped by the ligament of Struthers; thickened biceps aponeurosis; between the superficial and deep heads of the pronator teres muscle and by a thickened proximal edge of flexor digitorum superficialis muscle...
February 15, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28195895/analysis-of-levator-function-and-ptosis-severity-in-involutional-blepharoptosis
#7
Hsin-Ti Lai, Shih-Feng Weng, Chih-Hau Chang, Shu-Hung Huang, Su-Shin Lee, Kao-Ping Chang, Chung-Sheng Lai
BACKGROUND: Involutional blepharoptosis is the most common type of acquired blepharoptosis. The etiology is believed to be the degeneration of the levator aponeurosis, and levator superioris muscle function was believed to be normal. However, there are a few studies analyzing levator function (LF) in involutional blepharoptosis. Our study aimed to access the LF abnormality in involutional blepharoptosis and analyze the correlation between LF and ptosis severity in involutional blepharoptosis in Taiwan...
February 14, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28194520/simple-and-safe-technique-for-closure-of-midline-abdominal-wound-dehiscence
#8
M H Abo-Ryia
PURPOSE: The aim of this study was to assess an alternative technique for closure of burst abdomen. METHOD: After reduction of the viscera and toilet of abdominal cavity with debridement of any necrotic tissues in the skin or fascia, the skin was undermined to expose the aponeurosis all-around the defect edges for at least 5-6 cm. The greater omentum is spread in the floor of the wound and fixed to the inner side of the defect. A piece of polypropylene mesh designed according to the size and shape of the defect and sutured to its external edge continuously...
February 13, 2017: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/28175956/-percutaneous-needle-aponeurotomy-for-dupuytren-s-contracture
#9
J Oppermann, F Unglaub, L P Müller, S Löw, P Hahn, C K Spies
Dupuytren disease is a benign fibroproliferative disease of the palmar aponeurosis, which can cause considerable functional deficiencies for the person concerned. Partial aponeurectomy is the gold standard in primary surgery. Because it is minimally invasive and has short recovery and low complication rates, the importance of needle aponeurotomy under specific indications has been increasing in the last years. Needle aponeurotomy is a cost-effective treatment with low complication rates. The revision rate compared to partial aponeurectomy is higher...
February 7, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28164048/rare-giant-cell-tumor-of-olecranon-bone
#10
Pawan Goyal, Vishal Gautam, Narender Saini, Yogesh Sharma
INTRODUCTION: Giant cell tumor (GCT) is a bone tumor involving epiphyseal area of bone abutting the subchondral bone. Commonly found in long bones such as proximal tibia and distal femur. We report a case of GCT of olecranon bone in a 23-year-old male. CASE REPORT: A 23-year-old patient presented to our outpatient department with pain and mild swelling at the elbow from last 2 to 3 months. On examination, it was seen that there was a moderate swelling at the tip of the olecranon...
September 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28149737/endoscopic-subtotal-fasciectomy-of-the-foot
#11
Tun Hing Lui
Plantar fibromatosis is a rare benign but often locally aggressive tumor of the plantar aponeurosis. Nonsurgical treatment is the first line of treatment for symptomatic lesions. Because of the high recurrence rate associated with surgical treatment, operation is indicated only when the lesions are highly symptomatic and conservative measures fail or the diagnosis is in question. The purpose of this technical note is to report the details of endoscopic subtotal fasciectomy. This may reduce the risks of skin necrosis and dehiscence, infection, and formation of painful hypertrophic scars...
December 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28139472/microsurgical-tunica-albuginea-transplantation-in-an-animal-model
#12
Salvatore Sansalone, Carla Loreto, Rosario Leonardi, Giuseppe Vespasiani, Giuseppe Musumeci, Claudia Lombardo, Sergio Castorina, Venera Cardile, Rosario Caltabiano
Several andrological diseases require surgical repair or reconstruction of tunica albuginea, which envelops the corpora cavernosa penis. Despite intense research efforts involving a variety of biological materials, such as skin, muscle aponeurosis, human dura mater, tunica vaginalis, and pericardium, engineered tunica albuginea suitable for graft use is yet to be obtained. The study investigates microsurgical tunica albuginea allotransplantation in an animal model with the purpose of creation of an organ-specific tissue bank to store penile tissue, from cadaveric donors and male-to-female trans-sexual surgery, for allogeneic transplantation...
January 24, 2017: Asian Journal of Andrology
https://www.readbyqxmd.com/read/28124107/the-interaction-between-the-vastus-medialis-and-vastus-intermedius-and-its-influence-on-the-extensor-apparatus-of-the-knee-joint
#13
Karl Grob, Mirjana Manestar, Luis Filgueira, Markus S Kuster, Helen Gilbey, Timothy Ackland
PURPOSE: Although the vastus medialis (VM) is closely associated with the vastus intermedius (VI), there is a lack of data regarding their functional relationship. The purpose of this study was to investigate the anatomical interaction between the VM and VI with regard to their origins, insertions, innervation and function within the extensor apparatus of the knee joint. METHODS: Eighteen human cadaveric lower limbs were investigated using macro-dissection techniques...
January 25, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28116949/the-effect-of-in-situ-decompression-on-ulnar-nerve-stability-a-cadaveric-study
#14
B Butler, J Peelman, L-Q Zhang, M Kwasny, D Nagle
Ten fresh frozen right cadaver arms were placed in a motorized jig and an in-situ ulnar nerve decompression was performed in 5 mm increments distally to the flexor carpi ulnaris (FCU) aponeurosis then proximally to the intermuscular septum. The elbows were ranged 0-135° after each incremental decompression and the ulnar nerve to medial epicodyle distance was measured to assess for nerve translation/subluxation compared with baseline (prerelease) values. None of the specimens had ulnar nerve subluxation (defined as anterior translation past the medial epicondyle) even after full decompression...
January 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28040255/does-prophylactic-mesh-placement-in-elective-midline-laparotomy-reduce-the-incidence-of-incisional-hernia-a-systematic-review-and-meta-analysis
#15
Zachary M Borab, Sameer Shakir, Michael A Lanni, Michael G Tecce, John MacDonald, William W Hope, John P Fischer
BACKGROUND: Operative intervention to correct incisional hernia affects 150,000 patients annually, with 1 in 3 repairs recurring within 9 years. The aim of this study was to compare the incidence of incisional hernia and postoperative complications in elective midline laparotomy patients after the use of prophylactic mesh placement and primary suture closure. METHODS: A systematic review was performed to identify studies comparing prophylactic mesh placement to primary suture closure in elective, midline laparotomy at index abdominal aponeurosis closure...
December 28, 2016: Surgery
https://www.readbyqxmd.com/read/28032167/facing-the-worst-risk-confronting-the-dorsal-nasal-artery-implication-for-non-surgical-procedures-of-nasal-augmentation
#16
Tanvaa Tansatit, Prawit Apinuntrum, Thavorn Phetudom
BACKGROUND: The nose is a dangerous site for filler injection. This study investigated the anatomy of the dorsal nasal artery at the upper part of the nose to clarify how ocular complications occur. METHODS: Dissections were performed in 50 noses of the embalmed cadavers. Either the soft embalming or formaldehyde embalming processes were used. RESULTS: The dorsal nasal artery is not a constant artery. The artery traveled in the subcutaneous tissue layer of the nasal dorsum on the transverse nasalis muscle and its midline nasal aponeurosis which connected the muscles on both sides...
December 28, 2016: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28005782/post-levator-aponeurosis-fat-pad
#17
Yasuhiro Takahashi, Takashi Nakano, Hiroshi Ikeda, Hidetaka Miyazaki, Raman Malhotra, Hirohiko Kakizaki
The aim of this study was to examine the superoinferior extension of the post-levator aponeurosis fat pad in the upper eyelids of Japanese cadavers. Twenty-six upper eyelids (12 right and 14 left) from 15 Japanese cadavers (6 men and 9 women; average age at death, 82.1 years) were used in this experimental anatomical study. After an orbital exenteration, the tissues were cut sagittally through the center of the orbit, and the superoinferior extension of the post-levator aponerosis fat pad was microscopically examined on the sections...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28003562/a-novel-diffusion-tensor-mri-approach-for-skeletal-muscle-fascicle-length-measurements
#18
Jos Oudeman, Valentina Mazzoli, Marco A Marra, Klaas Nicolay, Mario Maas, Nico Verdonschot, Andre M Sprengers, Aart J Nederveen, Gustav J Strijkers, Martijn Froeling
Musculoskeletal (dys-)function relies for a large part on muscle architecture which can be obtained using Diffusion-Tensor MRI (DT-MRI) and fiber tractography. However, reconstructed tracts often continue along the tendon or aponeurosis when using conventional methods, thus overestimating fascicle lengths. In this study, we propose a new method for semiautomatic segmentation of tendinous tissue using tract density (TD). We investigated the feasibility and repeatability of this method to quantify the mean fascicle length per muscle...
December 2016: Physiological Reports
https://www.readbyqxmd.com/read/27997073/effects-of-growth-on-muscle-tendon-and-aponeurosis-tissues-in-rabbit-shank-musculature
#19
Markus Böl, Kay Leichsenring, Tobias Siebert
There exist several studies using morphological analyses of skeletal muscles to obtain a better understanding of muscle structure. The structural information obtained are primarily determined from single muscle components using individual animals of discrete ages. Further, little is known about changing dimensions of the aponeurosis, which is an important load-transferring interface in muscle mechanics. Thus, the aim of the present study was to determine how the muscle, tendon, and particularly the aponeurosis geometry of the rabbit shank musculature (M...
December 20, 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/27989345/gravity-equinus-position-to-control-the-tendon-length-of-reversed-free-tendon-flap-reconstruction-for-chronic-achilles-tendon-rupture
#20
Takaki Sanada, Eiji Uchiyama
Repair of chronic Achilles tendon rupture is a surgical challenge. We describe the use of a free turndown tendon flap augmentation raised from the proximal gastrocnemius aponeurosis. To control optimal tension or the reconstructed Achilles tendon length, we used an original method by referring to the gravity planter flexion ankle angle of the contralateral limb. Key aspects of the technique are described. A retrospective analysis of the short-term outcomes achieved in a case series (n = 56) is presented. The postoperative anthropometric findings are also presented to indicate the successful outcomes achieved with this technique...
January 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
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