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  1. Article: THE ROUND LIGAMENT IN DEVELOPMENTAL HIP DYSPLASIA: ARE ITS MECHANICAL AND HISTOLOGICAL PROPERTIES PRESERVED?

    Zuccon, Alexandre / Pereira, Hamilton DA Rosa / Santos, Sérgio Alexandre Alcântara Dos / Felisbino, Sérgio Luís / Junior, Luís Antônio Justulin / Cataneo, Daniele Cristina

    Acta ortopedica brasileira

    2022  Volume 30, Issue 1, Page(s) e235808

    Abstract: Introduction: During open surgical dislocated hip reduction, several anatomical structures, such as the round ligament, are approached. However, there is controversy over both the possibility of preserving the ligament and its functional importance.: ... ...

    Abstract Introduction: During open surgical dislocated hip reduction, several anatomical structures, such as the round ligament, are approached. However, there is controversy over both the possibility of preserving the ligament and its functional importance.
    Materials and methods: This experimental study used skeletally immature rabbits as a model for congenital hip dislocation. Thirty-six rabbits comprised the sample that was submitted to the round ligament analysis. The sample was stratified for analysis (biomechanics, zymography, histology, and immunohistochemistry). Statistical analysis compared the unstable side to the control side of each rabbit.
    Results: Biomechanical assays showed that the mean maximal strength of the round ligament on the unstable side was similar to that of the control side (p = 0.594), which was also the case with maximum deformation (p = 0.328). Histologically, there was a statistically significant increase in cellularity on the unstable side (p <0.001). Additionally, there was significantly greater collagen occupancy on the control side (p <0.001). Zymography revealed no significant difference in the amount of active metalloproteinase 2 (MMP-2) (p = 0.068).
    Conclusions: Although histological analysis found evidence of significant changes in the RL in unstable hips, there were no significant differences in zymography, and no changes were observed in biomechanical tests.
    Language English
    Publishing date 2022-01-28
    Publishing country Brazil
    Document type Journal Article
    ZDB-ID 2105206-2
    ISSN 1809-4406 ; 1413-7852
    ISSN (online) 1809-4406
    ISSN 1413-7852
    DOI 10.1590/1413-785220223001e235808
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Diagnosis and classification of chondral knee injuries: comparison between magnetic resonance imaging and arthroscopy.

    Danieli, Marcus Vinicius / Guerreiro, João Paulo Fernandes / Queiroz, Alexandre deOliveira / Pereira, Hamilton daRosa / Tagima, Susi / Marini, Marcelo Garcia / Cataneo, Daniele Cristina

    Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA

    2016  Volume 24, Issue 5, Page(s) 1627–1633

    Abstract: Purpose: To compare the magnetic resonance imaging (MRI) findings of patients undergoing knee arthroscopy for chondral lesions. The hypothesis was that MRI displays low sensitivity in the diagnosis and classification of chondral injuries.: Methods: A ...

    Abstract Purpose: To compare the magnetic resonance imaging (MRI) findings of patients undergoing knee arthroscopy for chondral lesions. The hypothesis was that MRI displays low sensitivity in the diagnosis and classification of chondral injuries.
    Methods: A total of 83 knees were evaluated. The MRIs were performed using the same machine (GE SIGNA HDX 1.45 T). The MRI results were compared with the arthroscopy findings, and an agreement analysis was performed. Thirty-eight of the 83 MRI exams were evaluated by another radiologist for inter-observer agreement analysis. These analyses were performed using the kappa (κ) coefficient.
    Results: The highest incidence of chondral injury was in the patella (14.4 %). The κ coefficient was 0.31 for the patellar surface; 0.38 for the trochlea; 0.46 for the medial femoral condyle; 0.51 for the lateral femoral condyle; and 0.19 for the lateral plateau. After dividing the injuries into two groups (ICRS Grades 0-II and Grades III and IV), the following κ coefficients were obtained as follows: 0.49 (patella); 0.53 (trochlea); 0.46 (medial femoral condyle); 0.43 (medial plateau); 0.67 (lateral femoral condyle); and 0.51 (lateral plateau). The MRI sensitivity was 76.4 % (patella), 88.2 % (trochlea), 69.7 % (medial femoral condyle), 85.7 % (medial plateau), 81.8 % (lateral femoral condyle) and 75 % (lateral plateau). Comparing the radiologists' evaluations, the following κ coefficients were obtained as follows: 0.73 (patella); 0.63 (trochlea); 0.84 (medial femoral condyle); 0.72 (medial plateau); 0.77 (lateral femoral condyle); and 0.91 (lateral plateau).
    Conclusion: Compared with arthroscopy, MRI displays moderate sensitivity for detecting and classifying chondral knee injuries. It is an important image method, but we must be careful in the assessment of patients with suspected chondral lesions.
    Level of evidence: III.
    MeSH term(s) Adolescent ; Adult ; Aged ; Arthroscopy ; Cartilage Diseases/diagnosis ; Cartilage Diseases/diagnostic imaging ; Cartilage, Articular/injuries ; Child ; Female ; Humans ; Knee Injuries/classification ; Knee Injuries/diagnosis ; Knee Joint/pathology ; Knee Joint/surgery ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Retrospective Studies ; Sensitivity and Specificity ; Young Adult
    Language English
    Publishing date 2016-05
    Publishing country Germany
    Document type Comparative Study ; Journal Article
    ZDB-ID 1159064-6
    ISSN 1433-7347 ; 0942-2056
    ISSN (online) 1433-7347
    ISSN 0942-2056
    DOI 10.1007/s00167-015-3622-8
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    Zs.A 3742: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  3. Article ; Online: Treatment of osteochondral injuries with platelet gel.

    Danieli, Marcus Vinicius / Pereira, Hamilton da Rosa / Carneiro, Carlos Augusto de Sá / Felisbino, Sérgio Luiz / Deffune, Elenice

    Clinics (Sao Paulo, Brazil)

    2012  Volume 69, Issue 10, Page(s) 694–698

    Abstract: Objectives: Treatments for injured articular cartilage have not advanced to the point that efficient regeneration is possible. However, there has been an increase in the use of platelet-rich plasma for the treatment of several orthopedic disorders, ... ...

    Abstract Objectives: Treatments for injured articular cartilage have not advanced to the point that efficient regeneration is possible. However, there has been an increase in the use of platelet-rich plasma for the treatment of several orthopedic disorders, including chondral injuries. Our hypothesis is that the treatment of chondral injuries with platelet gel results in higher-quality repair tissue after 180 days compared with chondral injuries not treated with gel.
    Methods: A controlled experimental laboratory study was performed on 30 male rabbits to evaluate osteochondral injury repair after treatment with or without platelet gel. Osteochondral injuries were surgically induced in both knees of each rabbit at the medial femoral condyle. The left knee injury was filled with the platelet gel, and the right knee was not treated. Microscopic analysis of both knee samples was performed after 180 days using a histological grading scale.
    Results: The only histological evaluation criterion that was not significantly different between treatments was metachromasia. The group that was treated with platelet gel exhibited superior results in all other criteria (cell morphology, surface regularity, chondral thickness and repair tissue integration) and in the total score.
    Conclusion: The repair tissue was histologically superior after 180 days in the study group treated with platelet gel compared with the group of untreated injuries.
    MeSH term(s) Animals ; Cartilage, Articular/injuries ; Cartilage, Articular/pathology ; Disease Models, Animal ; Gels/therapeutic use ; Knee Injuries/pathology ; Knee Injuries/therapy ; Male ; Platelet-Rich Plasma ; Rabbits ; Reproducibility of Results ; Time Factors ; Treatment Outcome ; Wound Healing
    Chemical Substances Gels
    Language English
    Publishing date 2012-07-30
    Publishing country United States
    Document type Evaluation Study ; Journal Article
    ZDB-ID 2182801-5
    ISSN 1980-5322 ; 1807-5932
    ISSN (online) 1980-5322
    ISSN 1807-5932
    DOI 10.6061/clinics/2014(10)08
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.B 404: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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  4. Article ; Online: Mechanical comparative analysis of three different types of sutures in different dimensions tendons

    Sardenberg Trajano / Müller Sérgio Swain / Facuri Neto Chafi / Barbosa Gustavo Colani / El Murr José Fernando / Pereira Hamilton da Rosa

    Acta Ortopédica Brasileira, Vol 10, Iss 3, Pp 35-

    experimental study

    2002  Volume 41

    Abstract: The aim of this experimental investigation was study of mechanical profile of three kinds of suture, between tendons with different dimensions. Were utilized 21 mongrel dogs ( 11males, 10 females) of wich were obtained the tendon comum flexor and tendon ... ...

    Abstract The aim of this experimental investigation was study of mechanical profile of three kinds of suture, between tendons with different dimensions. Were utilized 21 mongrel dogs ( 11males, 10 females) of wich were obtained the tendon comum flexor and tendon tibial cranial of both pelvic limbs. After the dissection of the tendons, suture was done, seven animal per group. The tendons utilized allways were from the right limb and from the left limb side utilized as control. After the suture, we performed axial traction tests, rate level of 30mm /min, using special jaws. After the test the machine's program informed the values of ultimate load, elongation and strain, and load elongation diagram. The results were submite to statistical study, that showed no difference between the technics utilized. The values of suture groups were smaller than the control, for ultimate load, and higher for elongation and strain.
    Keywords Tendon ; suture ; biomechanical ; Surgery ; RD1-811 ; Medicine ; R ; DOAJ:Surgery ; DOAJ:Medicine (General) ; DOAJ:Health Sciences
    Subject code 796
    Language English
    Publishing date 2002-01-01T00:00:00Z
    Publisher Atha Comunicação & Editora
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Evolution of representation of the hands in plastic arts

    Sardenberg Trajano / Pereira Gilberto José Cação / Biancardi Cleide Santos Costa / Müller Sergio Swain / Pereira Hamilton da Rosa

    Acta Ortopédica Brasileira, Vol 10, Iss 3, Pp 15-

    2002  Volume 24

    Abstract: The interaction between art and science was high during the Renaissance and it declined later to return significantly in the 20th century, mainly with the use of identification techniques, dating of art works and the development of new materials. The ... ...

    Abstract The interaction between art and science was high during the Renaissance and it declined later to return significantly in the 20th century, mainly with the use of identification techniques, dating of art works and the development of new materials. The relationship between plastic arts and hand surgery is intense and artistic reproductions of hands are frequent in the illustration of scientific texts. With the objective of understanding the role of the hand in plastic arts, reproductions of works of art (sculptures and paintings) representative of several periods or styles in the history of art were analyzed emphasizing the study of the hands. Anatomical details, relationship with other structures of the human body, role in the composition and symbolic aspects of the hands were studied in historical and artistic contexts of art works in the Paleolithic period (pre-history) until the 20th century. The representation of the hands in plastic arts is directly related to the style or period of the work and to the individual ability of interpretation and execution by the artist.
    Keywords Hand ; art ; history of the art ; Surgery ; RD1-811 ; Medicine ; R ; DOAJ:Surgery ; DOAJ:Medicine (General) ; DOAJ:Health Sciences
    Subject code 700
    Language English
    Publishing date 2002-01-01T00:00:00Z
    Publisher Atha Comunicação & Editora
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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