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Clinical Orthopaedics and related Research

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https://www.readbyqxmd.com/read/28205076/do-orthopaedic-oncologists-agree-on-the-diagnosis-and-treatment-of-cartilage-tumors-of-the-appendicular-skeleton
#1
Tomas Zamora, Julio Urrutia, Daniel Schweitzer, Pedro Pablo Amenabar, Eduardo Botello
BACKGROUND: Distinguishing a benign enchondroma from a low-grade chondrosarcoma is a common diagnostic challenge for orthopaedic oncologists. Low interrater agreement has been observed for the diagnosis of cartilaginous neoplasms among radiologists and pathologists, but, to our knowledge, no study has evaluated inter- and intraobserver agreement among orthopaedic oncologists grading these lesions using initial clinical and imaging information. Determining such agreement is important since it reflects the certainty in the diagnosis by orthopaedic oncologists...
February 15, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28205075/hamstring-autograft-versus-patellar-tendon-autograft-for-acl-reconstruction-is-there-a-difference-in-graft-failure-rate-a-meta-analysis-of-47-613-patients
#2
Brian T Samuelsen, Kate E Webster, Nick R Johnson, Timothy E Hewett, Aaron J Krych
BACKGROUND: Bone-patellar tendon-bone (bone-tendon-bone) and four-strand hamstring tendon grafts (hamstring) are the most commonly utilized autografts for primary anterior cruciate ligament (ACL) reconstruction. Existing clinical trials, registry studies, and meta-analyses offer conflicting opinions regarding the most favorable graft choice. QUESTIONS/PURPOSES: Which graft type for ACL reconstruction (bone-tendon-bone or hamstring) has a higher risk of (1) graft rupture and/or (2) graft laxity? METHODS: We performed a meta-analysis of randomized controlled trials (RCTs), prospective cohort studies, and high-quality national registry studies to compare the outcomes of primary ACL reconstruction with bone-tendon-bone autograft or hamstring autograft...
February 15, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28197783/freezing-nitrogen-ethanol-composite-may-be-a-viable-approach-for-cryotherapy-of-human-giant-cell-tumor-of-bone
#3
Po-Kuei Wu, Cheng-Fong Chen, Jir-You Wang, Paul Chih-Hsueh Chen, Ming-Chau Chang, Shih-Chieh Hung, Wei-Ming Chen
BACKGROUND: Liquid nitrogen has been used as adjuvant cryotherapy for treating giant cell tumor (GCT) of bone. However, the liquid phase and ultrafreezing (-196° C) properties increase the risk of damage to the adjacent tissues and may lead to perioperative complications. A novel semisolid cryogen, freezing nitrogen ethanol composite, might mitigate these shortcomings because of less-extreme freezing. We therefore wished to evaluate freezing nitrogen ethanol composite as a coolant to determine its properties in tumor cryoablation...
February 14, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28194715/does-extracellular-dna-production-vary-in-staphylococcal-biofilms-isolated-from-infected-implants-versus-controls
#4
Beata Zatorska, Marion Groger, Doris Moser, Magda Diab-Elschahawi, Luigi Segagni Lusignani, Elisabeth Presterl
BACKGROUND: Prosthetic implant infections caused by Staphylococcus aureus and epidermidis are major challenges for early diagnosis and treatment owing to biofilm formation on the implant surface. Extracellular DNA (eDNA) is actively excreted from bacterial cells in biofilms, contributing to biofilm stability, and may offer promise in the detection or treatment of such infections. QUESTIONS/PURPOSES: (1) Does DNA structure change during biofilm formation? (2) Are there time-dependent differences in eDNA production during biofilm formation? (3) Is there differential eDNA production between clinical and control Staphylococcal isolates? (4) Is eDNA production correlated to biofilm thickness? METHODS: We investigated eDNA presence during biofilm formation in 60 clinical and 30 control isolates of S aureus and S epidermidis...
February 13, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28194714/is-limb-salvage-with-microwave-induced-hyperthermia-better-than-amputation-for-osteosarcoma-of-the-distal-tibia
#5
Kang Han, Peiye Dang, Na Bian, Xiang Chen, Tongtao Yang, QingYu Fan, Yong Zhou, Tingbao Zhao, Pingshan Wang
BACKGROUND: Amputation has been the standard surgical treatment for distal tibia osteosarcoma owing to its unique anatomic features. Preliminary research suggested that microwave-induced hyperthermia may have a role in treating osteosarcoma in some locations of the body (such as the pelvis), but to our knowledge, no comparative study has evaluated its efficacy in a difficult-to-treat location like the distal tibia. QUESTIONS: Does microwave-induced hyperthermia result in (1) improved survival, (2) decreased local recurrence, (3) improved Musculoskeletal Tumor Society (MSTS) scores, or (4) fewer complications than amputation in patients with a distal tibial osteosarcoma? METHODS: Between 2000 and 2015, we treated 79 patients for a distal tibia osteosarcoma without metastases...
February 13, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28194713/use-of-compressive-osseointegration-endoprostheses-for-massive-bone-loss-from-tumor-and-failed-arthroplasty-a-viable-option-in-the-upper-extremity
#6
Krista A Goulding, Adam Schwartz, Steven J Hattrup, R Lor Randall, Donald Lee, Damian M Rispoli, Daniel M Lerman, Christopher Beauchamp
BACKGROUND: Endoprostheses using principles of compressive osseointegration have shown good survivorship in several studies involving the lower extremity; however, no series to our knowledge have documented the use of this technology in the management of massive bone loss in the upper limb. QUESTIONS/PURPOSES: (1) What proportion of upper extremity implants using compressive osseointegration fixation principles achieved durable short-term fixation, and what were the modes of failure? (2) What surgical complications resulted from reconstruction using this technique? METHODS: A multiinstitutional retrospective review identified nine patients (five women; four men) who underwent 13 endoprosthetic replacements between 2003 and 2014 using compressive osseointegration (Compliant(®) Pre-stress Device [CPS]; Biomet Inc, Warsaw, IN, USA) in the upper extremity, including two proximal humeri, two humeral diaphyses, seven distal humeri, and two proximal ulna...
February 13, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28194712/artifacts-femoroacetabular-impingement-a-new-pathology
#7
Corinne A Zurmühle, Marco Milella, Simon D Steppacher, Markus S Hanke, Christoph E Albers, Moritz Tannast
No abstract text is available yet for this article.
February 13, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28194711/corr-insights-%C3%A2-high-risk-of-readmission-in-octogenarians-undergoing-primary-hip-arthroplasty
#8
Simon C Mears
No abstract text is available yet for this article.
February 13, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28194710/exchangeable-femoral-neck-dual-modular-tha-prostheses-have-poorer-survivorship-than-other-designs-a-nationwide-cohort-of-324-108-patients
#9
Sandrine Colas, Assia Allalou, Antoine Poichotte, Philippe Piriou, Rosemary Dray-Spira, Mahmoud Zureik
BACKGROUND: Exchangeable neck stems, defined as those with a dual taper (that is, a modular junction between the femoral head and the femoral neck and an additional junction between the neck and the stem body), were introduced in THA to improve restoration of joint biomechanics (restoring anteversion, offset, and limb length) and reduce the risk of dislocation. However exchangeable necks have been reported to result in adverse effects such as stem fractures and acute local tissue reaction...
February 13, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28194709/high-survivorship-and-little-osteoarthritis-at-10-year-followup-in-scfe-patients-treated-with-a-modified-dunn-procedure
#10
Kai Ziebarth, Milan Milosevic, Till D Lerch, Simon D Steppacher, Theddy Slongo, Klaus A Siebenrock
BACKGROUND: The modified Dunn procedure has the potential to restore the anatomy in hips with slipped capital femoral epiphyses (SCFE) while protecting the blood supply to the femoral head and minimizing secondary impingement deformities. However, there is controversy about the risks associated with the procedure and mid- to long-term data on clinical outcomes, reoperations, and complications are sparse. QUESTIONS/PURPOSES: Among patients treated with a modified Dunn procedure for SCFE, we report on (1) hip pain and function as measured by the Merle d'Aubigné and Postel score, Drehmann sign, anterior impingement test, limp, and ROM; (2) the cumulative survivorship at minimum 10-year followup with endpoints of osteoarthritis (OA) progression (at least one Tönnis grade), subsequent THA, or a Merle d'Aubigné and Postel score < 15; (3) radiographic anatomy of the proximal femur measured by slip angle, α angle, Klein line, and sphericity index; and (4) the risk of subsequent surgery and complications...
February 13, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28194708/editorial-comment-symposium-the-3rd-annual-meeting-of-pediatric-research-in-sports-medicine-prism
#11
EDITORIAL
Matthew D Milewski, Hank G Chambers
No abstract text is available yet for this article.
February 13, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28194707/obituary-a-remembrance-of-francis-m-howard-md-1922-2016
#12
Marlene Woodson-Howard
No abstract text is available yet for this article.
February 13, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28194706/obituary-a-personal-remembrance-of-robert-w-bucholz-md-1947-2016
#13
Marybeth Ezaki, Emily M Bucholz
No abstract text is available yet for this article.
February 13, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28194705/editorial-comment-2016-bernese-hip-symposium
#14
Klaus-Arno Siebenrock
No abstract text is available yet for this article.
February 13, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28181160/not-the-last-word-unnecessary-surgery-can-never-be-done-well
#15
Joseph Bernstein
No abstract text is available yet for this article.
February 8, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28160256/matrix-metalloproteases-1-and-3-promoter-gene-polymorphism-is-associated-with-rotator-cuff-tear
#16
Jorge H Assunção, Alexandre L Godoy-Santos, Maria Cristina L G Dos Santos, Eduardo A Malavolta, Mauro E C Gracitelli, Arnaldo A Ferreira Neto
BACKGROUND: Studies suggest that the collagen degeneration and disordered arrangement of collagen fibers in rotator cuff tears are associated with an increase in activity of matrix metalloproteases 1 and 3 (MMP-1 and MMP-3), and that MMP activity may be in part genetically mediated. The degree to which this might be clinically relevant in patients with rotator cuff tears has not been well characterized. QUESTIONS/PURPOSES: (1) Is genetic polymorphism of MMP-1 and MMP-3 associated with rotator cuff tears? (2) Are there haplotypes of MMP-1 and MMP-3 correlated with rotator cuff tears? (3) Compared with control subjects, do patients with rotator cuff tears have a higher proportion of relatives with the same disease? METHODS: We evaluated 64 patients with full-thickness rotator cuff tears and 64 asymptomatic control subjects...
February 3, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28160255/from-bench-to-bedside-ischemia-is-bad-%C3%A2-right
#17
Benjamin K Potter
No abstract text is available yet for this article.
February 3, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28155211/a-day-at-the-office-smooth-transitions-setting-up-the-next-phase-of-a-professional-life
#18
Douglas W Lundy
No abstract text is available yet for this article.
February 2, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28155210/corr-insights-%C3%A2-what-is-the-accuracy-of-nuclear-imaging-in-the-assessment-of-periprosthetic-knee-infection-a-meta-analysis
#19
Thomas Ilchmann
No abstract text is available yet for this article.
February 2, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28155209/do-mesenchymal-stem-cells-derived-from-atypical-lipomatous-tumors-have-greater-differentiation-potency-than-cells-from-normal-adipose-tissues
#20
Hiroyuki Inatani, Norio Yamamoto, Katsuhiro Hayashi, Hiroaki Kimura, Akihiko Takeuchi, Shinji Miwa, Takashi Higuchi, Kensaku Abe, Yuta Taniguchi, Satoshi Yamada, Kiyofumi Asai, Takanobu Otsuka, Hiroyuki Tsuchiya
BACKGROUND: The p53 protein in mesenchymal stem cells (MSCs) regulates differentiation to osteogenic or adipogenic lineage. Because p53 function is depressed in most malignancies, if MSCs in malignancy also have p53 hypofunction, differentiation therapy to osteogenic or adipogenic lineage may be an effective treatment. We therefore wished to begin to explore this idea by evaluating atypical lipomatous tumor/well-differentiated liposarcoma (ALT/WDL) cells, because murine double minute 2 (MDM2) gene amplification, which leads to p53 hypofunction, is found in almost all ALT/WDLs...
February 2, 2017: Clinical Orthopaedics and related Research
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