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https://www.readbyqxmd.com/read/28944517/biomechanical-comparison-of-xenogeneic-bone-material-treated-with-different-methods
#1
Wei Feng, Dongsong Li, Junting Zang, Li Fu
Bone xenografting is considered one of the most effective ways to address the shortage of bone autografts and allografts. Various methods have been employed to minimize the immune rejection issues associated with bone xenografts. However, the side effects of such methods on bone biomechanical properties remain unclear. As such, the objective of this study was to compare the influence of different treatments on the biomechanical properties of porcine bones. Fresh pig ribs were cut into 1.5 × 0.5 × 0.4 cm specimens, which were randomly divided into four groups and subjected to different modification regimes: group A by degreasing and partial deproteinization, group B by cryopreservation, group C by cryopreservation and enzyme digestion, and group D was a control group using fresh bone...
September 24, 2017: Xenotransplantation
https://www.readbyqxmd.com/read/28943070/structural-glenoid-grafting-during-primary-reverse-total-shoulder-arthroplasty-using-humeral-head-autograft
#2
Robert Z Tashjian, Erin Granger, Peter N Chalmers
BACKGROUND: Large glenoid bone defects in the setting of glenohumeral arthritis can present a challenge to the shoulder arthroplasty surgeon. The results of large structural autografting at the time of reverse total shoulder arthroplasty (RTSA) are relatively unknown. METHODS: This retrospective case series describes the clinical and radiographic results of large structural autografting from the humeral head to the glenoid during primary RTSA. RESULTS: Of 17 patients who met inclusion criteria, 14 (82% follow-up) were evaluated postoperatively at a mean of 2...
September 22, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28942372/restoration-of-fresh-cat-ovarian-tissue-function-by-autografting-to-subcutaneous-tissue-a-pilot-study
#3
Ellen C R Leonel, Janice M V Vilela, Raísa E G Paiva, José L P R Jivago, Rodrigo S Amaral, Carolina M Lucci
Ovarian tissue transplantation could be a valuable technique for the preservation of endangered animals. The domestic cat affords an adequate experimental model for studies aimed at wild felids due to its phylogenetic similarity. Thus, this pilot study evaluated the efficacy of cat ovarian tissue autotransplantation to a peripheral site. Three adult queens were submitted to ovariohysterectomy. The ovaries were fragmented into eight pieces; two were fixed as a control and six were transplanted to subcutaneous tissue of the dorsal neck...
September 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28942019/failure-patterns-in-standalone-anterior-cervical-discectomy-and-fusion-implants
#4
Fernando Alonso, Tarush Rustagi, Cameron Schmidt, Daniel C Norvell, R Shane Tubbs, Rod J Oskouian, Jens R Chapman, Christian Fisahn
INTRODUCTION: Anterior cervical discectomy and fusion is commonly performed using an allograft or autograft implant and anterior screw-supported plate. There has been an increase in the use of standalone cage devices due to ease of use and studies suggesting a lower rate of acute post-operative dysphagia. We review our experience with standalone cage devices and identify risk factors, patterns of failure, and revision surgery approaches. MATERIALS AND METHODS: We performed a retrospective case-series of patients treated at a single tertiary care institution between March 2014 and March 2015...
September 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28929187/morden-synthetic-material-is-a-safe-and-effective-alterative-for-medial-patellofemoral-ligament-reconstruction
#5
Paul Y F Lee, David Golding, Sam Rozewicz, Amit Chandratreya
PURPOSE: Medial patellofemoral ligament (MPFL) reconstruction is often performed using gracilis autografts, which may be associated with donor site morbidity and complications. The use of a synthetic material can circumvent a harvest operation and has previously been demonstrated to be effective in other types of reconstructive procedures and may be effective in MPFL reconstruction. This study reports the clinical result with the use of a morden ultra-high molecular weight polyethylene with a braided jacket of polyester tape (FT) in MPFL reconstruction compared to using standard autografts...
September 19, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28927769/spontaneous-healing-of-a-tear-of-an-anterior-cruciate-ligament-graft-a-case-report
#6
Natalie Yu Yi Ng, Barry Wei Loong Tan, Lingaraj Krishna
BACKGROUND: Almost 30% of young athletic patients sustain a second anterior cruciate ligament (ACL) injury within 24months of their ACL reconstruction and returning to pivoting sports. Most patients with high athletic demand and significant anteroposterior instability often require ACL revision surgery to restore their pre-injury activity levels. CASE REPORT: A 24-year old gentleman ruptured his hamstring tendon autograft during a twisting injury seven months after his ACL reconstruction...
September 16, 2017: Knee
https://www.readbyqxmd.com/read/28927669/are-the-hamstrings-from-the-drive-leg-or-landing-leg-more-active-in-baseball-pitchers-an-electromyographic-study
#7
Brandon J Erickson, Antonia Zaferiou, Peter N Chalmers, Deana Ruby, Phillip Malloy, Timothy J Luchetti, Nikhil N Verma, Anthony A Romeo
BACKGROUND: Ulnar collateral ligament reconstruction (UCLR) has become a common procedure among baseball players of all levels. There are several graft choices in performing UCLR, one of which is a hamstring (gracilis or semitendinosus) autograft. It is unclear whether the hamstring muscle from a pitcher's drive leg (ipsilateral side of the UCLR) or landing leg (contralateral side of the UCLR) is more active during the pitching motion. We hypothesized that the landing leg semitendinosus will be more electromyographically active than the drive leg...
September 15, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28923271/biological-effects-of-orthodontic-tooth-movement-into-the-grafted-alveolar-cleft
#8
Jian Sun, Xiaoyue Zhang, Renmei Li, Zhengxi Chen, Yuanliang Huang, Zhenqi Chen
PURPOSE: Functional stimulus during orthodontic tooth movement into the grafted bone can lead to better alveolar bone grafting outcomes. The aim of this study was to analyze the biological effects of orthodontic tooth movement into the grafted alveolar cleft area with histologic staining, fluorescence staining, and real-time polymerase chain reaction (PCR). MATERIALS AND METHODS: An animal model of orthodontic tooth movement into the grafted alveolar cleft area was established in 8-week-old Sprague-Dawley rats...
August 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28922327/releasable-single-suture-for-primary-pterygium-excision-with-a-conjunctival-autograft
#9
Gautam Singh Parmar, Sachin Arya, Ashok Kumar Meena, Bhushan Ghodke, Elesh Jain, Budhendra Jain
PURPOSE: To evaluate the efficacy of a releasable single suture for pterygium excision with a conjunctival autograft (CAG). METHODS: Retrospective case series at a tertiary eye care center in central India was conducted. Medical records of 150 patients, who underwent primary pterygium excision with a CAG secured by a single releasable 10-0 nylon suture in the last year were reviewed. The surgical duration was noted. The suture was released on the first postoperative day under topical anesthesia...
September 15, 2017: Cornea
https://www.readbyqxmd.com/read/28919608/arthroscopic-anterior-cruciate-ligament-reconstruction-with-triplet-autograft-of-semitendinosus-tendon
#10
M Z Islam, M Rahman, M E Ali, M K Alam, W Ahmed, M T Alam, M K Saha
Anterior cruciate ligament (ACL) is the most commonly injured ligament occurs in young adult population, which markedly reduces activity level. Anterior cruciate ligament rupture is a threat to the homeostasis of the knee. So, reconstruction of the ACL is necessary to make them fit and return to their pre-injury activity level. The choice of graft for ACL reconstruction is a matter of debate, with the BPTB graft and quadruple graft of ST-G being the two most popular options. Use of triplet graft of semi-tendinosus tendon alone without sacrificing gracilis is another option...
July 2017: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/28917876/preparation-of-chitosan-hydroxyapatite-composite-mono-fiber-using-coagulation-method-and-their-mechanical-properties
#11
Takuma Okada, Yuta Nobunaga, Toshiisa Konishi, Tomohiko Yoshioka, Satoshi Hayakawa, Maria Ascensão Lopes, Toshiki Miyazaki, Yuki Shirosaki
Autograft has been carried out for anterior cruciate ligament (ACL) reconstruction surgery. However, it has negative aspect because patients lose their healthy ligaments from other part. We focus on a chitosan-hydroxyapatite (HAp) composite fiber as a scaffold of ligament regeneration. Chitosan- HAp composite fiber was made by using coagulation method. Chitosan-NaH2PO4 solution was coagulated with coagulation bath including calcium ion to get the mono-fiber and then treated with sodium hydroxide solution to form HAp in fiber matrix...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28916912/morphological-changes-in-tibial-tunnels-after-anatomic-anterior-cruciate-ligament-reconstruction-with-hamstring-tendon-graft
#12
Tomoki Ohori, Tatsuo Mae, Konsei Shino, Yuta Tachibana, Kazuomi Sugamoto, Hideki Yoshikawa, Ken Nakata
BACKGROUND: Three-dimensional (3D) reconstructed computed tomography (CT) is crucial for the reliable and accurate evaluation of tunnel enlargement after anterior cruciate ligament (ACL) reconstruction. The purposes of this study were to evaluate the tibial tunnel enlargement at the tunnel aperture and inside the tunnel and to clarify the morphological change at the tunnel footprint 1 year after the anatomic triple-bundle (ATB) ACL reconstruction using 3D CT models. METHODS: Eighteen patients with unilateral ACL rupture were evaluated...
September 15, 2017: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/28915914/paradoxical-tunnel-enlargement-after-acl-reconstruction-with-hamstring-autografts-when-using-%C3%AE-tcp-containing-interference-screws-for-tibial-aperture-fixation-prospectively-comparative-study
#13
Joon Ho Wang, Eun Su Lee, Byung Hoon Lee
BACKGROUND: Tibial aperture fixation with a bioabsorbable interference screw is a popular fixation method in anterior cruciate ligament reconstruction (ACLR). An interference screw containing β-tricalcium phosphate (β-TCP) to improve bony integration and biocompatibility was recently introduced. This study aims to compare the clinical outcomes and radiological results of tunnel enlargement effect between the 2 bioabsorbable fixative devices of pure poly-L-lactic acid (PLLA) interference screws and β-TCP-containing screws, for tibial interference fixation in ACLR using hamstring autografts...
September 16, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28915703/treatments-of-traumatic-neuropathic-pain-a-systematic-review
#14
REVIEW
Chenglun Yao, Xijie Zhou, Bin Zhao, Chao Sun, Keshav Poonit, Hede Yan
Traumatic neuropathic pain caused by traumatic neuroma has long been bothering both doctors and patients, the mechanisms of traumatic neuropathic pain are widely discussed by researchers and the treatment is challenging. Clinical treatment of painful neuroma is unclear. Numerous treatment modalities have been introduced by experts in this field. However, there is still no single standard recognized treatment. Different forms of treatments have been tested in animals and humans, but pharmacotherapies (antidepressants, antiepileptics) remain the basis of traumatic neuropathic pain management...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28914208/a-systematic-review-of-clinical-studies-investigating-mesenchymal-stem-cells-for-fracture-non-union-and-bone-defects
#15
Kieran Killington, Reza Mafi, Pouya Mafi, Wasim Khan
Fracture non-union is a significant problem with a wide demographic and massive socioeconomic elements, as well as the clinical difficulties it presents. Conventional treatments with autograft and allograft bone grafting pose serious difficulties, thus, it is necessary to develop novel techniques with our ever increasing knowledge of bioengineering using natural materials. Papers were searched from a variety of sources, not limited to English-language studies or only published papers. Papers had to meet the definition of fracture non-union or bone defect and had to be clinical trials, using human MSCs...
September 15, 2017: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28904683/-pertrochanterian-fracture-revealing-multiple-myeloma-how-is-it-treated
#16
Hicham Bousbaa, Mourad Bennani, Naoufal Elghoul, Mohammed Ouahidi, Jamal Louaste, Laarbi Amhaji
Skeletal involvement is the major clinical complication of multiple myelomas, resulting in pathological fractures. Proximal femoral fractures are very frequent during multiple myeloma evolution and they seriously compromise survival and quality of life of patients with cancer. Early surgical treatment allows mortality and morbidity improvement. Cervicomedullary Gamma locking nail osteosynthesis allows efficient, sustainable and stable fixation associated with early patient mobilization and survival improvement...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28895634/reply-letter-to-the-editor-free-ilm-autograft-for-macular-hole
#17
Josef Guber
No abstract text is available yet for this article.
September 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28895633/letter-to-the-editor-free-ilm-autograft-for-macular-hole
#18
Sergio E Hernandez-Da Mota, Raul Velez-Montoya
No abstract text is available yet for this article.
September 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28892648/long-term-outcomes-of-anterior-cruciate-ligament-reconstruction-using-either-synthetics-with-remnant-preservation-or-hamstring-autografts-a-10-year-longitudinal-study
#19
Tianwu Chen, Peng Zhang, Jiwu Chen, Yinghui Hua, Shiyi Chen
BACKGROUND: The optimal graft choice of anterior cruciate ligament (ACL) reconstruction remains controversial. PURPOSE: To compare the outcomes, especially the long-term cumulative failure rate, of ACL reconstruction using either synthetics with remnant preservation or hamstring autografts (4-strand semitendinosus and gracilis tendons). STUDY DESIGN: Cohort study; Level of evidence, 2. METHODS: A total of 133 patients who underwent ACL reconstruction (synthetics: n = 43; hamstring autografts: n = 90) between July 2004 and December 2007 were included...
September 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28890904/thirty-year-experience-with-acl-reconstruction-using-patellar-tendon-a-critical-evaluation-of-revision-and-reoperation
#20
Andrew J Riff, Timothy J Luchetti, Alexander E Weber, Jaskarndip Chahal, Bernard R Bach
BACKGROUND: During the preoperative discussion prior to anterior cruciate ligament reconstruction (ACLR), patients are often interested in data regarding rates of revision reconstruction, reoperation, concomitant pathologic changes, and future contralateral ACL injury. PURPOSE: To analyze a single surgeon's experience with primary and revision ACLR over a 30-year interval, focusing on incidence and risk factors for revision and reoperation. STUDY DESIGN: Case series; Level of evidence, 4...
August 2017: Orthopaedic Journal of Sports Medicine
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