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  1. Article ; Online: Migration of inferior vena cava filter during the surgery of tibial shaft fracture: A case report.

    Baba, Kazuyoshi / Hatta, Taku / Sasajima, Koichi / Mineta, Mitsuyoshi / Itoi, Eiji / Aizawa, Toshitake

    Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association

    2018  Volume 25, Issue 5, Page(s) 911–914

    MeSH term(s) Cardiac Tamponade/etiology ; Cardiac Tamponade/surgery ; Device Removal ; Foreign-Body Migration/complications ; Fracture Fixation, Intramedullary ; Humans ; Male ; Middle Aged ; Tibial Fractures/surgery ; Vena Cava Filters/adverse effects
    Language English
    Publishing date 2018-01-10
    Publishing country Japan
    Document type Case Reports
    ZDB-ID 1314243-4
    ISSN 1436-2023 ; 0949-2658
    ISSN (online) 1436-2023
    ISSN 0949-2658
    DOI 10.1016/j.jos.2017.12.012
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: In Vivo Glenoid Track Width Can Be Better Predicted With the Use of Shoulder Horizontal Extension Angle.

    Kawakami, Jun / Yamamoto, Nobuyuki / Etoh, Toshimitsu / Hatta, Taku / Mineta, Mitsuyoshi / Itoi, Eiji / Isawa, Ryohei

    The American journal of sports medicine

    2019  Volume 47, Issue 4, Page(s) 922–927

    Abstract: Background: The glenoid track concept has been widely used to assess the risk of instability caused by a bipolar lesion. The mean glenoid track width is reported to be 83% of the glenoid width. However, this width seems to be affected by the range of ... ...

    Abstract Background: The glenoid track concept has been widely used to assess the risk of instability caused by a bipolar lesion. The mean glenoid track width is reported to be 83% of the glenoid width. However, this width seems to be affected by the range of motion of the shoulder. By clarifying the relationship between the range of shoulder motion and the glenoid track width, a more precise determination of the glenoid track width for each individual could be possible.
    Purpose: To determine the relationship between the glenoid track width and the range of motion of healthy volunteers.
    Study design: Descriptive laboratory study.
    Methods: Magnetic resonance imaging was taken in 41 shoulders of 21 healthy volunteers (mean age, 32 years) with the arm in maximum horizontal extension, with the arm kept in 90° of abduction and 90° of external rotation. Three-dimensional surface bone models of the glenoid and the humerus were created with image analysis software. The distance from the anterior rim of the glenoid to the medial margin of the footprint of the rotator cuff tendon was defined as the glenoid track width. Active and passive ranges of shoulder motion were measured in the supine and sitting positions. The correlations between the glenoid track width and the ranges of shoulder motion were investigated with Pearson correlation coefficients. Intra- and interobserver reliabilities based on the intraclass correlation coefficient were also analyzed to assess the reliability of the glenoid track measurement.
    Results: The intra- and interobserver reliabilities for the glenoid track measurement were excellent (0.988 and 0.988, respectively). Among all the measurements, the glenoid track width and the active range of motion in horizontal extension in the sitting position showed the greatest correlation coefficient ( r = -0.623, P < .0001). A correlation between the glenoid track width and this angle was expressed as Y = -0.49 X + 90, where X is the horizontal extension angle (degrees) and Y is the glenoid track width (percentage of glenoid width).
    Conclusion: The present data demonstrate that the greater the horizontal extension angle in abduction and external rotation, the smaller the glenoid track width. An individualized glenoid track width can be obtained by measuring the active horizontal extension angle with the arm in abduction and external rotation in the sitting position.
    Clinical relevance: An individualized glenoid track width enables selection of a more precise surgical option by the on-track/off-track concept.
    MeSH term(s) Adult ; Female ; Humans ; Magnetic Resonance Imaging ; Male ; Movement ; Range of Motion, Articular ; Reference Values ; Reproducibility of Results ; Risk Factors ; Rotation ; Shoulder Dislocation/physiopathology ; Shoulder Joint/anatomy & histology ; Shoulder Joint/diagnostic imaging ; Shoulder Joint/physiology ; Shoulder Joint/physiopathology
    Language English
    Publishing date 2019-03-14
    Publishing country United States
    Document type Journal Article
    ZDB-ID 197482-8
    ISSN 1552-3365 ; 0363-5465
    ISSN (online) 1552-3365
    ISSN 0363-5465
    DOI 10.1177/0363546519825629
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Risk Factors for Tear Progression in Symptomatic Rotator Cuff Tears: A Prospective Study of 174 Shoulders.

    Yamamoto, Nobuyuki / Mineta, Mitsuyoshi / Kawakami, Jun / Sano, Hirotaka / Itoi, Eiji

    The American journal of sports medicine

    2017  Volume 45, Issue 11, Page(s) 2524–2531

    Abstract: Background: The risk factors for tear progression in symptomatic rotator cuff tears have not been clarified yet. It is important for orthopaedic surgeons to know the natural course of tear progression when nonoperative management is to be chosen.: ... ...

    Abstract Background: The risk factors for tear progression in symptomatic rotator cuff tears have not been clarified yet. It is important for orthopaedic surgeons to know the natural course of tear progression when nonoperative management is to be chosen.
    Hypothesis: Tears in younger patients, high-activity patients, or heavy laborers would progress in size more than those in older patients, low-activity patients, or light laborers.
    Study design: Case-control study; Level of evidence, 3.
    Methods: Two hundred twenty-five consecutive patients with symptomatic rotator cuff tears visited our institute between 2009 and 2015. Of these, 174 shoulders of 171 patients (mean age, 66.9 years) who underwent at least 2 magnetic resonance imaging (MRI) examinations were prospectively enrolled. The mean follow-up was 19 months. Tear progression was defined as positive when the tear size increased by ≥2 mm. The demographic factors that were analyzed by multivariate analysis included age, sex, hand dominance, smoking, alcohol drinking, hypercholesterolemia, sports participation, job type, tear size, and tear type (full or partial thickness).
    Results: Of the 174 shoulders, 82 shoulders (47%) showed tear progression. The mean (±SD) tear length and width in the progression group on final MRI were 23.1 ± 12.5 mm and 17.3 ± 9.6 mm, respectively; the tear size progressed by a mean 5.8 ± 5.6 mm in length and 3.1 ± 5.2 mm in width. The mean propagation speed was 3.8 mm/y in length and 2.0 mm/y in width. The size of full-thickness tears significantly increased compared with that of articular-sided partial-thickness tears ( P = .0215). The size of medium tears significantly increased compared with that of other tears ( P < .0001). According to the logistic regression analysis, smoking was significantly correlated with tear progression ( P = .026). Subgroup analyses showed that male sex, hand dominance, and trauma were correlated with tear progression. Age, alcohol drinking, hypercholesterolemia, sports participation, and job type did not show any correlation with tear progression.
    Conclusion: The tear size of symptomatic rotator cuff tears progressed in 47% of the shoulders during a mean of 19 months, and the speed of progression was 3.8 mm/y in length and 2.0 mm/y in width. The risk factors for tear progression were (1) a medium-sized tear, (2) a full-thickness tear, and (3) smoking.
    Language English
    Publishing date 2017-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 197482-8
    ISSN 1552-3365 ; 0363-5465
    ISSN (online) 1552-3365
    ISSN 0363-5465
    DOI 10.1177/0363546517709780
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Critical shoulder angle in an East Asian population: correlation to the incidence of rotator cuff tear and glenohumeral osteoarthritis.

    Shinagawa, Kiyotsugu / Hatta, Taku / Yamamoto, Nobuyuki / Kawakami, Jun / Shiota, Yuki / Mineta, Mitsuyoshi / Itoi, Eiji

    Journal of shoulder and elbow surgery

    2018  Volume 27, Issue 9, Page(s) 1602–1606

    Abstract: Background: Focus has recently been on the critical shoulder angle (CSA) as a factor related to rotator cuff tear and osteoarthritis (OA) in the European population. However, whether this relationship is observed in the Asian population is unclear.: ... ...

    Abstract Background: Focus has recently been on the critical shoulder angle (CSA) as a factor related to rotator cuff tear and osteoarthritis (OA) in the European population. However, whether this relationship is observed in the Asian population is unclear.
    Methods: The correlation between the CSAs measured on anteroposterior radiographs and the presence or absence of rotator cuff tears or OA changes was assessed in 295 patients. Rotator cuff tears were diagnosed with magnetic resonance imaging or ultrasonography. OA findings were classified using the Samilson-Prieto classification. The CSAs among the patients with rotator cuff tears, OA changes, and those without pathologies were compared. Multivariable analyses were used to clarify the potential risks for these pathologies.
    Results: The mean CSA with rotator cuff tear (33.9° ± 4.1°) was significantly greater than that without a rotator cuff tear (32.3° ± 4.5°; P = .002). Multivariable analysis also showed that a greater CSA had a significantly increased risk of rotator cuff tears, with the odds ratio of 1.08 per degree. OA findings showed no significant correlation to the CSAs.
    Conclusions: Our study demonstrates that the CSA is greater in those with a rotator cuff tear than in those without a tear or OA changes, which may be an independent risk factor for the incidence of rotator cuff tears in the Japanese population.
    MeSH term(s) Adult ; Aged ; Asian Continental Ancestry Group ; Cohort Studies ; Female ; Humans ; Incidence ; Japan ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Osteoarthritis/diagnostic imaging ; Osteoarthritis/ethnology ; Risk Factors ; Rotator Cuff Injuries/diagnostic imaging ; Rotator Cuff Injuries/ethnology ; Shoulder Joint/diagnostic imaging ; Ultrasonography
    Language English
    Publishing date 2018-05-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1170782-3
    ISSN 1532-6500 ; 1058-2746
    ISSN (online) 1532-6500
    ISSN 1058-2746
    DOI 10.1016/j.jse.2018.03.013
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Tendon patch grafting using the long head of the biceps for irreparable massive rotator cuff tears.

    Sano, Hirotaka / Mineta, Mitsuyoshi / Kita, Atsushi / Itoi, Eiji

    Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association

    2010  Volume 15, Issue 3, Page(s) 310–316

    Abstract: Background: Surgical treatment of massive rotator cuff tears is challenging for shoulder surgeons. The purpose of this study was to investigate both clinical outcomes and cuff integrity after tendon patch grafting using the long head of the biceps (LHB) ...

    Abstract Background: Surgical treatment of massive rotator cuff tears is challenging for shoulder surgeons. The purpose of this study was to investigate both clinical outcomes and cuff integrity after tendon patch grafting using the long head of the biceps (LHB) tendon for irreparable massive rotator cuff tears.
    Methods: A short deltoid splitting approach was used to expose the torn cuff tendon stump. After tenodesis of the LHB tendon, its intraarticular portion was resected. If the size of the harvested tendon was smaller than that of the cuff defect, it was split into two layers. Then, the LHB tendon was sutured to the remnant cuff tendons and fixed to the footprint using the transosseous suture technique. A total of 14 patients (12 men, 2 women; average age 64 years) underwent this procedure. The average postoperative follow-up period was 28 months (range 12-51 months). Active elevation angle of the shoulder as well as the Japanese Orthopaedic Association (JOA) score were assessed before surgery and at the time of follow-up. Postoperative cuff integrity was assessed using T2-weighted magnetic resonance imaging (MRI).
    Results: All cuff defects were successfully closed with this technique. Average active elevation angle improved from 69 degrees to 149 degrees . Total JOA score also improved from 54.7 points to 83.1 points. Thirteen shoulders showed no re-tearing on T2-weighted MRI; a minor discontinuity of the repaired cuff tendon was observed in the other shoulder.
    Conclusions: The LHB tendon is available in case tenodesis or tenotomy is needed. The resected tendon may be used as a graft for rotator cuff repair without any additional skin incision, which could reduce both the surgical invasion and the risk of infection. The LHB tendon patch grafting may be one of the useful options for surgical treatment of irreparable massive rotator cuff tears.
    MeSH term(s) Aged ; Arthroscopy/methods ; Female ; Humans ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Range of Motion, Articular ; Rotator Cuff/surgery ; Rotator Cuff Injuries ; Suture Techniques ; Tendons/transplantation ; Tenodesis/methods
    Language English
    Publishing date 2010-05
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 1314243-4
    ISSN 1436-2023 ; 0949-2658
    ISSN (online) 1436-2023
    ISSN 0949-2658
    DOI 10.1007/s00776-010-1453-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Tumors masked as frozen shoulders: a retrospective analysis.

    Sano, Hirotaka / Hatori, Masahito / Mineta, Mitsuyoshi / Hosaka, Masami / Itoi, Eiji

    Journal of shoulder and elbow surgery

    2010  Volume 19, Issue 2, Page(s) 262–266

    Abstract: Background: It was reported that some shoulder tumors were misdiagnosed with frozen shoulder syndrome. The purposes of this study were to elucidate the incidence of the initial misdiagnosis with frozen shoulder syndrome among the patients with malignant ...

    Abstract Background: It was reported that some shoulder tumors were misdiagnosed with frozen shoulder syndrome. The purposes of this study were to elucidate the incidence of the initial misdiagnosis with frozen shoulder syndrome among the patients with malignant shoulder tumors, and to clarify whether such initial misdiagnosis affected the time to make a final correct diagnosis or not.
    Methods: Clinical records of 34 patients (age>40) with malignant shoulder tumors and those of 505 patients (age>40) with shoulder pain and stiffness were reviewed in the author's institute. The duration of the prediagnostic period was compared between the patients with and without an initial misdiagnosis as frozen shoulder syndrome.
    Results: Among 34 tumor patients, 9 (26%) had been initially misdiagnosed with frozen shoulder syndrome. Two patients actually manifested shoulder pain and stiffness, although they did not have a record of misdiagnosis. Among 505 patients with shoulder pain and stiffness, 4 (0.8%) were diagnosed later as having malignant tumors. One of these 4 patients had been initially misdiagnosed with frozen shoulder syndrome. Consequently, 15 malignant tumors (10 bone tumors and 5 soft tissue sarcomas) were identified. Seven of them were intraosseous humeral tumors and 4 were localized in the scapular region, where patients themselves could not find them. In 10 patients, initial misdiagnosis as frozen shoulder syndrome did cause a significant delay to reach the correct diagnosis as malignant tumors (P=.035).
    Conclusion: Physicians should carefully re-examine the frozen shoulder patients with repeated plain radiographs followed by further imaging studies, if the conservative therapy fails.
    MeSH term(s) Adult ; Aged ; Biopsy, Needle ; Bone Neoplasms/diagnosis ; Bone Neoplasms/pathology ; Bursitis/diagnosis ; Bursitis/pathology ; Cohort Studies ; Diagnosis, Differential ; Female ; Humans ; Immunohistochemistry ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Probability ; Retrospective Studies ; Risk Assessment ; Shoulder Joint/pathology ; Shoulder Pain/diagnosis ; Shoulder Pain/etiology ; Soft Tissue Neoplasms/diagnosis ; Soft Tissue Neoplasms/pathology ; Statistics, Nonparametric ; Tomography, X-Ray Computed
    Language English
    Publishing date 2010-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1170782-3
    ISSN 1532-6500 ; 1058-2746
    ISSN (online) 1532-6500
    ISSN 1058-2746
    DOI 10.1016/j.jse.2009.05.010
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Elasticity of the supraspinatus tendon-muscle unit is preserved after acute tendon tearing in the rabbit.

    Mineta, Mitsuyoshi / Sano, Hirotaka / Ichinose, Ryogo / Saijo, Yoshifumi / Itoi, Eiji

    The Tohoku journal of experimental medicine

    2007  Volume 216, Issue 1, Page(s) 17–24

    Abstract: Supraspinatus tendon tearing is one of the most common causes of the shoulder pain and dysfunction, which often requires a surgical repair. In this situation, proximal tendon stump is usually retracted medially from its original insertion. For successful ...

    Abstract Supraspinatus tendon tearing is one of the most common causes of the shoulder pain and dysfunction, which often requires a surgical repair. In this situation, proximal tendon stump is usually retracted medially from its original insertion. For successful reduction of the retracted tendon stump to its original insertion, the elasticity of the tendon-muscle unit should be preserved by the time of surgery. The purpose of the present study was to clarify the chronological changes in the elasticity of the supraspinatus tendon-muscle unit after acute tendon tearing to determine the optimal timing for the surgery. Right supraspinatus tendon was detached (detached side) in 40 male Japanese white rabbits, with left shoulders served as controls (control side). Eight animals were euthanized at 3 days and 1, 2, 4, or 8 weeks after surgery. Tissue sound speed that closely correlates to its elasticity was measured with a scanning acoustic microscope. In the supraspinatus tendon, tissue sound speed at 3 days after surgery was 1691.1 m/s, compared to 1714.3 m/s at the control side, but the difference was not statistically significant at any postoperative time period up to 8 weeks. In the supraspinatus muscle, tissue sound speed was not affected at all by the detachment of the tendon. The present study indicated that the elasticity of the supraspinatus tendon-muscle unit was well preserved for 8 weeks after the detachment. In the clinical practice, the retracted supraspinatus tendon stump could be repaired without excessive tension by 8 weeks from the acute tendon tearing.
    MeSH term(s) Acute Disease ; Animals ; Elasticity ; Male ; Microscopy, Acoustic ; Rabbits ; Rotator Cuff/diagnostic imaging ; Rotator Cuff/physiopathology ; Rotator Cuff/surgery ; Rotator Cuff Injuries ; Time Factors
    Language English
    Publishing date 2007-07-11
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 123477-8
    ISSN 1349-3329 ; 0040-8727
    ISSN (online) 1349-3329
    ISSN 0040-8727
    DOI 10.1620/tjem.216.17
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Recurrent Crow-Fukase syndrome associated with increased serum levels of vascular endothelial growth factor: a case report and review of the literature.

    Mineta, Mitsuyoshi / Hatori, Masahito / Sano, Hirotaka / Hosaka, Masami / Kokubun, Shoichi / Hiroki, Eri / Hatakeyama, Akira / Ogasawara, Tetsuro

    The Tohoku journal of experimental medicine

    2006  Volume 210, Issue 3, Page(s) 269–277

    Abstract: Crow-Fukase syndrome (CFS) is a rare multi-system disorder, characterized by polyneuropathy, organomegaly, endocrinopathy, M-proteins, skin changes and anasarca, with or without myeloma. The pathophysiology, diagnosis, and treatment of CFS are ... ...

    Abstract Crow-Fukase syndrome (CFS) is a rare multi-system disorder, characterized by polyneuropathy, organomegaly, endocrinopathy, M-proteins, skin changes and anasarca, with or without myeloma. The pathophysiology, diagnosis, and treatment of CFS are controversial. CFS may be associated with the overproduction of vascular endothelial growth factor (VEGF). However, there have been no reports of monitoring the serum VEGF level after recurrence, to the best of our knowledge. We report a 54-year-old man with CFS presenting with a 3-year history of ascites, anasarca, weakness of the lower extremities, and plasmacytoma in the scapula. At the initial examination, the VEGF level was 1,590 pg/ml (the VEGF level of a healthy control, 78.4 +/- 75.2 pg/ml). After initial treatment with chemotherapy and irradiation of the affected shoulder, the VEGF level decreased to 154 pg/ml and the symptoms disappeared. Twenty one months later, gate disturbance and anasarca recurred, and the VEGF level was over 2,000 pg/dl. After total scaplectomy, the VEGF level decreased to 730 pg/dl and the symptoms disappeared. The serum level of VEGF well correlated to the clinical course of the patient. In conclusion, measurement of the VEGF level is useful for diagnosing CFS and for monitoring its clinical course.
    MeSH term(s) Bone and Bones/pathology ; Humans ; Magnetic Resonance Imaging/methods ; Male ; Middle Aged ; POEMS Syndrome/blood ; POEMS Syndrome/diagnosis ; POEMS Syndrome/pathology ; Polyneuropathies/blood ; Polyneuropathies/diagnosis ; Polyneuropathies/pathology ; Radionuclide Imaging/methods ; Recurrence ; Tomography, X-Ray Computed/methods ; Vascular Endothelial Growth Factor A/blood
    Chemical Substances Vascular Endothelial Growth Factor A
    Language English
    Publishing date 2006-05-02
    Publishing country Japan
    Document type Case Reports ; Journal Article
    ZDB-ID 123477-8
    ISSN 0040-8727
    ISSN 0040-8727
    DOI 10.1620/tjem.210.269
    Database MEDical Literature Analysis and Retrieval System OnLINE

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