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https://www.readbyqxmd.com/read/28057012/clinical-results-of-arthroscopic-surgery-in-patients-over-50%C3%A2-years-of-age-what-viability-does-it-have-as-a-joint-preservative-surgery
#1
Mitsutoshi Moriya, Kensuke Fukushima, Katsufumi Uchiyama, Naonobu Takahira, Takeaki Yamamoto, Yojiro Minegishi, Masashi Takaso
BACKGROUND: To identify whether hip arthroscopy is a suitable option for treating hip pain in elderly patients and investigate the clinical outcomes of hip arthroscopic surgery for labrum tear and/or osteoarthritis in patients over 50 years of age. METHODS: Between August 2009 and May 2014, a series of 23 patients (6 men and 17 women) with a mean age of 59 years underwent arthroscopy. We retrospectively examined the clinical records, radiographs, and outcome questionnaires from all patients...
January 6, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28053697/comparative-analysis-of-gene-expression-patterns-in-the-arthropod-labrum-and-the-onychophoran-frontal-appendages-and-its-implications-for-the-arthropod-head-problem
#2
Ralf Janssen
The arthropod head problem has troubled scientists for more than a century. The segmental composition of the arthropod head, homology of its appendages, and especially the nature of the most anterior region of the head are still, at least partially, unclear. One morphological feature of the head that is in the center of current debate is the labrum (upper lip), a fleshy appendicular structure that covers the arthropod mouth. One hypothesis is that the labrum represents a fused pair of protocerebral limbs that likely are homologous with the frontal appendages (primary antennae) of extant onychophorans and the so-called great appendages of stem arthropods...
2017: EvoDevo
https://www.readbyqxmd.com/read/28051031/inverted-acetabular-labrum-an-analysis-of-tissue-embedment-in-hip-joint-in-15-patients-with-developmental-dysplasia-of-the-hip
#3
Hui-Liang Zhang, Jun-Sheng Liang, Li-Geng Li, Dian-Zhong Luo, Kai Xiao, Hui Cheng, Hong Zhang
No abstract text is available yet for this article.
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28050531/femoroacetabular-impingement
#4
REVIEW
José Batista Volpon
The femoroacetabular impingement (FAI) is as condition recently characterized that results from the abnormal anatomic and functional relation between the proximal femur and the acetabular border, associated with repetitive movements, which lead labrum and acetabular cartilage injuries. Such alterations result from anatomical variations such as acetabular retroversion or decrease of the femoroacetabular offset. In addition, FAI may result from acquired conditions as malunited femoral neck fractures, or retroverted acetabulum after pelvic osteotomies...
November 2016: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28041611/the-mechanics-of-focal-chondral-defects-in-the-hip
#5
Brenden J Klennert, Benjamin J Ellis, Travis G Maak, Ashley L Kapron, Jeffrey A Weiss
There is a mean incidence of osteoarthritis (OA) of the hip in 8% of the overall population. In the presence of focal chondral defects, defined as localized damage to the articular cartilage, there is an increased risk of symptomatic progression toward OA. This relationship between chondral defects and subsequent development of OA has led to substantial efforts to develop effective procedures for surgical cartilage repair. This study examined the effects of chondral defects and labral delamination on cartilage mechanics in the dysplastic hip during the gait cycle using subject-specific finite element analysis...
November 29, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/28006814/a-new-genus-and-species-of-atalophlebiinae-insecta-ephemeroptera-leptophlebiidae-from-palni-hills-of-the-southern-western-ghats-india
#6
C Selvakumar, T Sivaruban, K A Subramanian, K G Sivaramakrishnan
A new genus and new species of Atalophlebiinae, Klugephlebia kodai Selvakumar, Subramanian & Sivaramakrishnan, are described based on male and female imagos and larvae from Palni hills of the southern Western Ghats of India. The imago of Klugephlebia gen. n. can be differentiated from all other genera of Atalophlebiinae by having the combination of vein MP forked slightly less than half of the distance from base to margin, MP2 attached at base to vein MP1 by a crossvein, a distinctive shape of the hindwing, dissimilar claws on each leg, and distinctive genitalia structures...
December 18, 2016: Zootaxa
https://www.readbyqxmd.com/read/28005117/tenotomy-tenodesis-transfer-a-review-of-treatment-options-for-biceps-labrum-complex-disease
#7
Elizabeth B Gausden, Samuel A Taylor, Prem Ramkumar, Benedict U Nwachukwu, Keith Corpus, Brian J Rebolledo, Alexander White, Stephen J O'Brien
Biceps-labrum complex (BLC) disease is a well recognized source of shoulder pain. The BLC can be divided into 3 anatomical zones: inside, junction, and bicipital tunnel. Despite our evolving understanding, diagnosis of BLC pathology through physical examination, standard imaging techniques, and standard diagnostic glenohumeral arthroscopy can be challenging. Selection of the most appropriate surgical technique in refractory cases should take into account decompression of the extra-articular bicipital tunnel...
November 2016: American Journal of Orthopedics
https://www.readbyqxmd.com/read/28001296/spatial-distribution-of-intermingling-pools-of-projection-neurons-with-distinct-targets-a-3-dimensional-analysis-of-the-commissural-ganglia-in-cancer-borealis
#8
Rosangela Follmann, Christopher John Goldsmith, Wolfgang Stein
Projection neurons play a key role in carrying long-distance information between spatially distant areas of the nervous system and in controlling motor circuits. Little is known about how projection neurons with distinct anatomical targets are organized, and few studies have addressed their spatial organization at the level of individual cells. In the paired commissural ganglia (CoGs) of the stomatogastric nervous system of the crab Cancer borealis, projection neurons convey sensory, motor, and modulatory information to several distinct anatomical regions...
December 21, 2016: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/27989966/origin-and-evolution-of-the-panarthropod-head-a-palaeobiological-and-developmental-perspective
#9
Javier Ortega-Hernández, Ralf Janssen, Graham E Budd
The panarthropod head represents a complex body region that has evolved through the integration and functional specialization of the anterior appendage-bearing segments. Advances in the developmental biology of diverse extant organisms have led to a substantial clarity regarding the relationships of segmental homology between Onychophora (velvet worms), Tardigrada (water bears), and Euarthropoda (e.g. arachnids, myriapods, crustaceans, hexapods). The improved understanding of the segmental organization in panarthropods offers a novel perspective for interpreting the ubiquitous Cambrian fossil record of these successful animals...
December 17, 2016: Arthropod Structure & Development
https://www.readbyqxmd.com/read/27988725/the-nymph-habitat-and-status-of-i-eatonigenia-i-in-china-ephemeroptera-ephemeridae
#10
Jun-Zhi Sun, Chang-Fa Zhou
The nymphs of a new species of Eatonigenia have more modified labrum and smaller foreclaws than congeners, and the males have a more reddish-brown colored body, cerci, genitalia and more sclerotized projections of gonopores. These characters indicate a new species which is named E. zhangi sp. nov. The nymphs live in fine sandy/muddy substrates of large rivers.
November 15, 2016: Zootaxa
https://www.readbyqxmd.com/read/27988639/remarkable-diversity-of-the-genus-i-endonura-i-cassagnau-1979-collembola-neanuridae-neanurinae-in-the-caucasus
#11
Adrian Smolis, Nataliya Kuznetsova
Endonura alticola (Stach, 1951) comb. nov. is redescribed based on the type material and seven new species of the genus Endonura are described from the various parts of the Caucasus. E. paracantabrica sp. nov. can be recognized by the number of chaetae (L+So) on head and a fusion of tubercles Di and De on the first thoracic segment. Specific traits of E. aibgai sp. nov. include small body size, low number of chaetae (L+So) on head, nonogival labrum, dentate claws, and long tibiotarsal chaetae B4 and B5. E. diminutichaeta sp...
November 27, 2016: Zootaxa
https://www.readbyqxmd.com/read/27981665/hip-mri-prevalence-of-articular-cartilage-defects-and-labral-tears-in-asymptomatic-volunteers-a-comparison-with-a-matched-population-of-patients-with-femoroacetabular-impingement
#12
Florian Tresch, Tobias J Dietrich, Christian W A Pfirrmann, Reto Sutter
PURPOSE: To prospectively compare defects of the articular cartilage and labrum in asymptomatic volunteers and in patients with femoroacetabular impingement (FAI) matched for age and gender. MATERIALS AND METHODS: This cross-sectional study was institutional review board approved. A total of 63 asymptomatic volunteers and 63 patients with symptomatic FAI between 20 and 50 years underwent 1.5 Tesla MRI (coronal T1-weighted, coronal intermediate-weighted fat saturated, transverse oblique true fast imaging with steady-state precession [FISP], sagittal dual echo steady state [DESS] sequence)...
December 16, 2016: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/27975135/accuracy-of-non-arthrographic-3t-mr-imaging-in-evaluation-of-intra-articular-pathology-of-the-hip-in-femoroacetabular-impingement
#13
Dorota D Linda, Ali Naraghi, Lucas Murnaghan, Daniel Whelan, Lawrence M White
OBJECTIVE: To investigate the accuracy of non-arthrographic 3-T MRI compared to hip arthroscopy in the assessment of labral and cartilaginous pathology in patients with suspected FAI. MATERIALS AND METHODS: Following IRB approval and waived consent, 42 consecutive cases of suspected FAI with non-arthrographic 3-T MRI and arthroscopy of the hip were reviewed. High-resolution TSE MR imaging was evaluated in consensus by two musculoskeletal radiologists, blinded to arthroscopic findings, for the presence of labral tears and articular cartilage lesions...
December 14, 2016: Skeletal Radiology
https://www.readbyqxmd.com/read/27975072/evaluation-of-shoulder-stabilizing-braces-can-we-prevent-shoulder-labrum-injury-in-collegiate-offensive-linemen
#14
Hayden P Baker, Vehniah K Tjong, Kevin F Dunne, Tory R Lindley, Michael A Terry
BACKGROUND: Shoulder injuries remain one of the most common injuries among collegiate football athletes. Offensive linemen in particular are prone to posterior labral pathology. PURPOSE: To evaluate the efficacy of shoulder bracing in collegiate offensive linemen with respect to injury prevention, severity, and lost playing time. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Offensive linemen at a single collegiate institution wore bilateral shoulder-stabilizing braces for every contact practice and game beginning in the spring of 2013...
December 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/27942510/is-clinical-evaluation-alone-sufficient-for-the-diagnosis-of-a-bankart-lesion-without-the-use-of-magnetic-resonance-imaging
#15
Bryan Loh, Jason Beng Teck Lim, Andrew Hwee Chye Tan
BACKGROUND: Imaging modalities such as magnetic resonance arthrogram (MRA) offer great utility in diagnosing Bankart lesions but they are associated with a high degree of intra and interobserver variability. This study aims to evaluate the diagnostic accuracy of clinical evaluation and imaging modalities in Bankart lesions such as magnetic resonance imaging (MRI) and MRA of the shoulder. METHODS: Between February 2004 to January 2015, a retrospectively review of the surgical records at a tertiary hospital identified a total of 250 patients treated with a shoulder arthroscopy for Bankart repair...
November 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/27923602/patient-specific-chondrolabral-contact-mechanics-in-patients-with-acetabular-dysplasia-following-treatment-with-peri-acetabular-osteotomy
#16
C L Abraham, S J Knight, C L Peters, J A Weiss, A E Anderson
OBJECTIVE: Using a validated, patient-specific finite element (FE) modeling protocol, we evaluated cartilage and labrum (i.e., chondrolabral) mechanics before and after peri-acetabular osteotomy (PAO) to provide insight into the ability of this procedure to improve mechanics in dysplastic hips. DESIGN: Five patients with acetabular dysplasia were recruited in this case-controlled, prospective study. Models, which included anatomy for bone, cartilage, and labrum, were generated from computed tomography (CT) arthrography scans acquired before and after PAO...
December 3, 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/27921206/periacetabular-osteotomy-provides-higher-survivorship-than-rim-trimming-for-acetabular-retroversion
#17
Corinne A Zurmühle, Helen Anwander, Christoph E Albers, Markus S Hanke, Simon D Steppacher, Klaus A Siebenrock, Moritz Tannast
BACKGROUND: Acetabular retroversion can cause impaction-type femoroacetabular impingement leading to hip pain and osteoarthritis. It can be treated by anteverting periacetabular osteotomy (PAO) or acetabular rim trimming with refixation of the labrum. There is increasing evidence that acetabular retroversion is a rotational abnormality of the entire hemipelvis and not a focal overgrowth of the anterior acetabular wall, which favors an anteverting PAO. However, it is unknown if this larger procedure would be beneficial in terms of survivorship and Merle d'Aubigné scores in a midterm followup compared with rim trimming...
December 5, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27909680/anatomic-labral-repair-in-the-hip-using-a-knotless-tensionable-suture-anchor
#18
Carlos Suarez-Ahedo, Timothy J Martin, John P Walsh, Sivashankar Chandrasekaran, Parth Lodhia, Benjamin G Domb
To perform a proper labral repair, most surgeons use anchors to secure the labrum to the acetabular bone. We aim to describe a technique for labral repair with a knotless tensionable suture anchor. This technique uses a looped suture configuration, allowing selective tensioning of the repair to maintain the anatomic suction seal of the hip. The use of this technique is easily reproducible and reduces the surgical time compared with previous techniques.
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27909661/the-oblique-mattress-lasso-loop-stitch-for-arthroscopic-capsulolabral-repair
#19
Nata Parnes, Maryellen Blevins, Monica Morman, Paul Carey
Arthroscopic capsulolabral repair during shoulder stabilization surgery requires the use of suture anchors. Several arthroscopic suturing techniques for capsulolabral repair have been described, and each carries very specific advantages and disadvantages with regard to risk, patient satisfaction, and functional outcomes. The purpose of this report is to describe the oblique mattress lasso-loop stitch. This stitch (1) provides strong initial fixation of the labrum, (2) establishes labral height and allows for larger capsular plication if needed, (3) prevents the suture from cutting through the radial fibers of the glenoid labrum, (4) prevents knot migration to the articular side and loosening of the knot, and (5) requires fewer implants and preserves glenoid bone stock by increasing the amount of labrum and capsule that can be reattached to the glenoid with a single-loaded suture anchor...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27904970/reliability-of-magnetic-resonance-imaging-versus-arthroscopy-for-the-diagnosis-and-classification-of-superior-glenoid-labrum-anterior-to-posterior-lesions
#20
Fatih Yıldız, Kerem Bilsel, Anıl Pulatkan, Gökçer Uzer, Ayşe Aralaşmak, Musa Atay
PURPOSE: The physical examination of the shoulder is usually not reliable for the true diagnosis of superior glenoid labrum anterior to posterior (SLAP) lesions. Magnetic resonance imaging (MRI) has been routinely used for the diagnosis. This prospective study investigates the radiological diagnosis of the SLAP lesions and compares accuracy of arthroscopic and MRI classifications. METHODS: One hundred thirty-two patients with positive physical examination signs using O'Brien, Yergason, resistance supination external rotation and Krank tests and MRI findings are included in the study...
November 30, 2016: Archives of Orthopaedic and Trauma Surgery
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