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Soft tissue grafts

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https://www.readbyqxmd.com/read/29140567/human-adipose-derived-stromal-cell-isolation-methods-and-use-in-osteogenic-and-adipogenic-in-vivo-applications
#1
Elizabeth Brett, Ruth Tevlin, Adrian McArdle, Eun Young Seo, Charles K F Chan, Derrick C Wan, Michael T Longaker
Adipose tissue represents an abundant and easily accessible source of multipotent cells, which may serve as excellent building blocks for tissue engineering. This article presents a newly described protocol for isolating adipose-derived stromal cells (ASCs) from human lipoaspirate, compared to the standard protocol for harvesting ASCs established in 2001. Human ASC isolation is performed using two methods, and resultant cells are compared through cell yield, cell viability, cell proliferation and regenerative potential...
November 15, 2017: Current Protocols in Stem Cell Biology
https://www.readbyqxmd.com/read/29140383/a-randomized-split-mouth-clinical-trial-on-effectiveness-of-amnion-chorion-membranes-in-alveolar-ridge-preservation-a-clinical-radiologic-and-morphometric-study
#2
Muyeenul Hassan, Sivaraman Prakasam, Carol Bain, Ahmed Ghoneima, Sean Shih-Yao Liu
PURPOSE: Recent case reports suggest that amnion-chorion membranes (ACM) and dense polytetrafluoroethylene membranes (dPTFE) can be left exposed during ridge preservation. The aim of this study was to compare the effectiveness of these membranes in ridge preservation, particularly when they are intentionally left exposed. MATERIALS AND METHODS: A split-mouth, single-blind, randomized trial design was used to compare treatments with the two membranes in 22 nonmolar sites on the same arch...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140095/a-customized-healing-abutment-for-immediate-and-delayed-implant-cases
#3
Lambert J Stumpel, Chandur Wadhwani
Anatomically contoured healing abutments have been shown to contain and protect slow-resorbing substitution grafts, resulting in bone and soft-tissue volume augmentation. Even in healed sites customized healing abutments have demonstrated favorable outcomes compared to standard healing abutments. Through two separate cases, this article describes a technique that enables simple chairside fabrication of precisely contoured customized healing abutments and exact 3-dimensional intraoral positioning. With this technique, the soft tissues upon maturation closely resemble the natural root contour, which allows for the generation of esthetic and functional implant-supported restorations...
November 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/29137077/quality-of-life-and-complications-at-the-different-stages-of-bone-transport-for-treatment-infected-nonunion-of-the-tibia
#4
Hu Wang, Xing Wei, Ping Liu, Ya-Hui Fu, Peng-Fei Wang, Yu-Xuan Cong, Bin-Fei Zhang, Zhong Li, Jin-Lai Lei, Kun Zhang, Yan Zhuang
The aim of this study was to assess Physical Component Summary (PCS), Mental Component Summary (MCS) of the Mos 36-item Short Form Health Survey (SF-36) score, and the virtual Analogue Scale (VAS) of pain during the treatment period and the complication rate associated with infected nonunion of the tibia managed surgically by bone transport.This is a retrospective analysis of prospectively collected data in a consecutive patient cohort. Patients suffering from infected nonunion of the tibia were treated by bone transport from 2012 to 2014...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29135894/deferoxamine-preconditioning-of-irradiated-tissue-improves-perfusion-and-fat-graft-retention
#5
John Flacco, Natalie Chung, Charles P Blackshear, Dre Irizarry, Arash Momeni, Gordon K Lee, Dung Nguyen, Geoffrey C Gurtner, Michael T Longaker, Derrick C Wan
BACKGROUND: Radiation therapy is a mainstay in the treatment of many malignancies, but collateral damage to surrounding tissue, with resultant hypovascularity, fibrosis, and atrophy, can be difficult to reconstruct. Fat grafting has been shown to improve the quality of irradiated skin, but volume retention of the graft is significantly decreased. Deferoxamine (DFO) is a FDA-approved iron-chelating medication for acute iron intoxication and chronic iron overload that has also been shown to increase angiogenesis...
November 8, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29135862/management-of-sigmoid-sinus-associated-pulsatile-tinnitus-a-systematic-review-of-the-literature
#6
Alan C Wang, Avery N Nelson, Cassandra Pino, Peter F Svider, Robert S Hong, Eleanor Chan
OBJECTIVES: Although studies demonstrate 4 to 20% of patients with pulsatile tinnitus (PT) have associated sigmoid sinus anomalies, no consensus exists regarding optimal management. Our objective was to perform a systematic review exploring surgical and endovascular intervention of PT caused by sigmoid sinus anomalies. DATA SOURCES/EXTRACTION: A systematic review was performed using the Preferred Reporting Systems for Systematic Reviews and Meta-Analysis guidelines for reporting of results, with a target population encompassing patients with PT and either sigmoid sinus diverticulum or sigmoid wall dehiscence...
December 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29132254/reverse-flow-intrinsic-fasciocutaneous-island-flaps-in-foot-reconstruction
#7
Sujin Bahk, GyeongHyeon Doh, Ki Yong Hong, SooA Lim, SuRak Eo
Reconstruction of soft tissue defects in the foot remains a challenge due to its specialized tissue for weightbearing and ambulation. Considering the principle of replacing "like with like," adjacent soft tissues would be a best option for a donor site. Although several kinds of reverse-flow island flaps for the lower leg have been well described, intrinsic foot reverse flow flaps have been rarely reported. We describe 3 kinds of reverse-flow intrinsic fasciocutaneous flaps (RIFFs) for foot reconstruction. From September 2012 to August 2015, a retrospective study was done on case notes of all patients who had a RIFF for coverage of soft tissue defects within the foot following trauma or tumor ablation...
November 1, 2017: International Journal of Lower Extremity Wounds
https://www.readbyqxmd.com/read/29131778/adventures-and-misadventures-in-plastic-surgery-and-soft-tissue-implants
#8
Dana J Lin, Tony T Wong, Gina A Ciavarra, Jonathan K Kazam
Soft-tissue augmentation and implants are increasingly seen by the radiologist as more techniques emerge for a variety of indications and locations. Some surgical and implant procedures are performed for purely cosmetic reasons in otherwise healthy patients seeking to improve their body image, and some are performed for reconstruction after cancer or other chronic illnesses. Abdominoplasty, liposuction, and autologous fat grafting can be performed for abdominal and gluteal contouring. Injection of liquid injectable silicone has historically been fraught with legal issues, although it continues to be used for augmentation in a variety of anatomic locations...
November 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29126283/surgical-management-of-penile-lesions-secondary-to-foreign-body-reaction-a-case-report-and-systematic-review
#9
Pedro L S Faveret, Fábio Santiago
Background: To improve the penile contour, some men choose to undergo implantation or injection of nonbiological materials. Foreign body reactions in penile tissue may produce scarring, deformity, ulceration, necrosis, and even gangrene. Consensus is lacking regarding the most effective surgical procedure for reconstruction of these penile lesions. Objectives: The authors describe one case study and the first systematic review focusing on reconstructive surgical management for penile lesions secondary to foreign body reaction...
November 6, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29124296/-diagnostics-and-treatment-of-posterior-shoulder-instability
#10
REVIEW
M Wellmann, M-F Pastor, T Smith
Posterior shoulder instability has a markedly lower incidence than anterior shoulder instability. It has a wide spectrum of clinical symptom manifestations and the overwhelming number of patients lack a traumatic primary dislocation. In addition to a detailed medical history, a specific clinical examination with the help of standardized provocation tests is essential for the diagnostics. For the detection of structural posterior capsule and labral lesions in cases of chronic courses, magnetic resonance imaging (MRI) should be used with an intra-articular contrast agent...
November 9, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/29119044/nursing-review-of-diagnosis-and-treatment-of-lumbar-degenerative-spondylolisthesis
#11
Nancy E Epstein, Renee D Hollingsworth
Background: In the lumbar spine, degenerative spondylolisthesis or degenerative (not traumatic) slippage of one vertebral body over another is divided into 4 grades - grade I (25%), grade II (50%), grade III (75%), and grade IV (100%). Dynamic X-rays, magnetic resonance (MR), and computed tomography (CT) scans document the slip secondary to arthritic changes of the facet joint plus stenosis, ossification of the yellow ligament, disc herniations, and synovial cysts. MR best demonstrates soft tissue pathology whereas CT better delineates ossific/calcified disease...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29117825/acute-compartment-syndrome-of-upper-extremities-with-tendon-ruptures
#12
Taku Suzuki, Eiko Yamabe, Takuji Iwamoto, Katsuji Suzuki, Harumoto Yamada, Kazuki Sato
BACKGROUND: It is well known that acute compartment syndrome is associated with fracture of the forearm, while involvement of soft tissue injury including musculotendinous injury remains unclear. The purpose of this study was to evaluate the soft tissue involvement, including musculotendinous ruptures, in acute compartment syndrome of the upper limb. METHODS: We retrospectively enrolled 16 patients who underwent surgical treatment for acute compartment syndrome of the upper extremity...
December 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/29115019/cell-laden-composite-suture-threads-for-repairing-damaged-tendons
#13
Raquel Costa-Almeida, Rui M A Domingues, Afsoon Fallahi, Huseyin Avci, Iman K Yazdi, Mohsen Akbari, Rui L Reis, Ali Tamayol, Manuela E Gomes, Ali Khademhosseini
Tendons have limited regenerative capacity due to their low cellularity and hypovascular nature, which results in poor clinical outcomes of presently used therapies. As tendon injuries are often observed in active adults, it poses an increasing socio-economic burden on healthcare systems. Currently, suture threads are used during surgical repair to anchor the tissue graft or to connect injured ends. Here, we created composite suture threads coated with a layer of cell-laden hydrogel that can be used for bridging the injured tissue aiming at tendon regeneration...
November 8, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29113567/rapid-in-situ-cross-linking-of-hydrogel-adhesives-based-on-thiol-grafted-bio-inspired-catechol-conjugated-chitosan
#14
Zhiwen Zeng, Xiumei Mo
In this paper, a novel chitosan derivative, thiol-grafting bio-inspired catechol-conjugated chitosan was synthesized. The chemical structure of the synthesized catechol-conjugated chitosan was verified by (1)H NMR, and its contents of thiol group and catechol group were determined by UV-vis spectrum. Four percent of catechol-conjugated chitosan aqueous solution could form hydrogels rapidly in situ in 1 min or less with the addition of sodium periodate. Rheological studies showed that the mechanical properties depend on the concentrations of catechol-conjugated chitosan and the molar ratio of sodium periodate to catechol groups...
November 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/29098903/scaphoid-instability-caused-by-a-giant-cell-tumour-of-the-tendon-sheath-a-case-report
#15
Yanjun Wang, Xiaoxiao Zhu, Genwang Pei, Xianshang Zeng, Deng Chen, Yonggang Zuo, Weiguang Yu, Zhe Ge, Xinchao Zhang
Giant-cell tumour of the tendon sheath (GCTTS) is a soft tissue tumour that may invade bone, causing an intrinsic osseous lesion or instability on radiographs. A case with scaphoid instability caused by a histologically-confirmed neighbouring GCTTS has rarely been described in the literature. No definite and radical method is available for the treatment of GCTTS. This report describes an unusual case of a 22-year-old woman who previously experienced a GCTTS in her right elbow, which was removed 10 years earlier...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/29095788/is-bone-graft-or-guided-bone-regeneration-needed-when-placing-immediate-dental-implants-a-systematic-review
#16
Hania AlKudmani, Reham Al Jasser, Sebastiano Andreana
AIMS: To systematically review the effect and type of bone graft and guided bone regeneration around immediate implants on hard and soft tissue changes. METHODS: Three electronic databases were searched up to June 2015. Outcomes consisted of hard and soft tissue dimensional changes. RESULTS: Eight studies were included according to inclusion criteria. Immediate implants with bone grafting had superior soft tissue stability and preserved horizontal ridge dimension and buccal plate thickness, when compared to no grafting...
November 1, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/29095192/interposition-tendon-graft-and-tension-in-the-repair-of-closed-rupture-of-the-flexor-digitorum-profundus-in-zone-iii-or-iv
#17
Young Jun Kim, Jong Hun Baek, Jin Sung Park, Jae Hoon Lee
We report the results of interposition tendon grafts using the ipsilateral palmaris longus tendon in 12 patients with closed flexor digitorum profundus tendon ruptures in zone III or IV of 14 digits between June 2006 and October 2015. Before surgery, 2 patients were diagnosed with closed tendon ruptures that occurred after nonunion of hamate hook fractures. The other 10 patients were diagnosed with spontaneous tendon ruptures of unknown cause. In 2 of the 10 patients with spontaneous tendon rupture, the cause of the rupture was not found...
October 31, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29082779/role-of-extra-articular-tibiotalocalcaneal-arthrodesis-and-posterior-approach-in-highly-complex-cases
#18
Sergio Eckholt, Ruben Garcia-Elvira, Nicolás Fontecilla, Alvaro Fernandez-Reinales, Daniel Poggio
BACKGROUND: Tibiotalocalcaneal (TTC) arthrodesis is a procedure commonly used as salvage surgery for various pathologic processes that compromise the ankle and subtalar joints. It is a reasonably standardized procedure when performed as a primary surgery in advanced stages of TTC arthritis. For such cases, there are several alternative approaches, fixation materials, and bone substitutes that can be used. Most represent valid options with similar results in the literature. However, in highly complex cases requiring TTC arthrodesis, the options for the approach and fixation material can be limited...
October 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/29078657/materials-and-techniques-in-chest-wall-reconstruction-a-review
#19
REVIEW
Stefano Sanna, Jury Brandolini, Alessandro Pardolesi, Desideria Argnani, Marta Mengozzi, Andrea Dell'Amore, Piergiorgio Solli
Extensive chest wall resection and reconstruction are a challenging procedure that requires a multidisciplinary approach, including input from thoracic surgeon, plastic surgeon and oncologist. In particular chest wall neoplastic pathology is associated with high surgical morbidity and can result in full thickness defects hard to reconstruct. The goals of a successful chest wall reconstruction are to restore the chest wall rigidity, preserve pulmonary mechanic and protect the intrathoracic organs minimizing the thoracic deformity...
2017: J Vis Surg
https://www.readbyqxmd.com/read/29076983/diaphyseal-nonunion-in-children
#20
Je Hyoung Yeo, Sung Taek Jung, Min Cheol Kim, Hong Yeol Yang
OBJECTIVES: To delineate the contributing factors that risk diaphyseal fracture nonunion in children and to then determine suggested treatment based on the cohort examined. DESIGN: Retrospective review PATIENTS:: This study analyzes 16 children patients who underwent operations for the treatment of nonunion of the diaphysis from January 1995 to December 2009. INTERVENTION: Stabilization by internal or external fixators with or without bone grafting...
September 25, 2017: Journal of Orthopaedic Trauma
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