Quantitative and qualitative analyses of subacromial impingement by kinematic open MRI
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| 024 | 7 | 0 | |a 10.1007/s00167-014-2876-x |2 doi |
| 035 | |a (NATIONALLICENCE)springer-10.1007/s00167-014-2876-x | ||
| 245 | 0 | 0 | |a Quantitative and qualitative analyses of subacromial impingement by kinematic open MRI |h [Elektronische Daten] |c [Atsushi Tasaki, Akimoto Nimura, Taiki Nozaki, Akira Yamakawa, Mamoru Niitsu, Wataru Morita, Yoshimitsu Hoshikawa, Keiichi Akita] |
| 520 | 3 | |a Purpose: Quantitative and qualitative kinematic analyses of subacromial impingement by 1.2T open MRI were performed to determine the location of impingement and the involvement of the acromioclavicular joint. Methods: In 20 healthy shoulders, 10 sequential images in the scapular plane were taken in a 10-s pause at equal intervals from 30° to maximum abduction in neutral and internal rotation. The distances between the rotator cuff (RC) and the acromion and the acromioclavicular joint were measured. To comprehend the positional relationships, cadaveric specimens were also observed. Results: Although asymptomatic, the RC came into contact with the acromion and the acromioclavicular joint in six and five cases, respectively. The superior RC acted as a depressor for the humeral head against the acromion as the shoulder elevated. The mean elevation angle and distance at the closest position between the RC and the acromion in neutral rotation were 93.5° and 1.6mm, respectively, while those between the RC and the acromioclavicular joint were 86.7° and 2.0mm. When comparing this distance and angle, there was no significant difference between the RC to the acromion and to the acromioclavicular joint. The minimum distance between the RC and the acromion was significantly shorter than that between the greater tuberosity and the acromion. The location of RC closest to the acromion and the acromioclavicular joint differed significantly. Conclusion: Although asymptomatic, contact was found between the RC and the acromion and the acromioclavicular joint. The important role of the RC to prevent impingement was observed, and hence, dysfunction of the RC could lead to impingement that could result in a RC lesion. The RC lesions may differ when they are caused by impingement from either the acromion or the acromioclavicular joint. | |
| 540 | |a Springer-Verlag Berlin Heidelberg, 2014 | ||
| 690 | 7 | |a Subacromial impingement |2 nationallicence | |
| 690 | 7 | |a Rotator cuff |2 nationallicence | |
| 690 | 7 | |a Acromioclavicular joint |2 nationallicence | |
| 690 | 7 | |a Three dimensional MRI |2 nationallicence | |
| 700 | 1 | |a Tasaki |D Atsushi |u Unit of Clinical Anatomy, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, 113-8519, Tokyo, Japan |4 aut | |
| 700 | 1 | |a Nimura |D Akimoto |u Unit of Clinical Anatomy, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, 113-8519, Tokyo, Japan |4 aut | |
| 700 | 1 | |a Nozaki |D Taiki |u Department of Radiology, St. Luke's International Hospital, Tokyo, Japan |4 aut | |
| 700 | 1 | |a Yamakawa |D Akira |u Department of Orthopaedic Surgery, St. Luke's International Hospital, Tokyo, Japan |4 aut | |
| 700 | 1 | |a Niitsu |D Mamoru |u Department of Radiology, Saitama Medical College, Moro, Saitama, Japan |4 aut | |
| 700 | 1 | |a Morita |D Wataru |u Department of Orthopaedic Surgery, St. Luke's International Hospital, Tokyo, Japan |4 aut | |
| 700 | 1 | |a Hoshikawa |D Yoshimitsu |u Department of Orthopaedic Surgery, St. Luke's International Hospital, Tokyo, Japan |4 aut | |
| 700 | 1 | |a Akita |D Keiichi |u Unit of Clinical Anatomy, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, 113-8519, Tokyo, Japan |4 aut | |
| 773 | 0 | |t Knee Surgery, Sports Traumatology, Arthroscopy |d Springer Berlin Heidelberg |g 23/5(2015-05-01), 1489-1497 |x 0942-2056 |q 23:5<1489 |1 2015 |2 23 |o 167 | |
| 856 | 4 | 0 | |u https://doi.org/10.1007/s00167-014-2876-x |q text/html |z Onlinezugriff via DOI |
| 898 | |a BK010053 |b XK010053 |c XK010000 | ||
| 900 | 7 | |a Metadata rights reserved |b Springer special CC-BY-NC licence |2 nationallicence | |
| 908 | |D 1 |a research-article |2 jats | ||
| 949 | |B NATIONALLICENCE |F NATIONALLICENCE |b NL-springer | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1007/s00167-014-2876-x |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Tasaki |D Atsushi |u Unit of Clinical Anatomy, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, 113-8519, Tokyo, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Nimura |D Akimoto |u Unit of Clinical Anatomy, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, 113-8519, Tokyo, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Nozaki |D Taiki |u Department of Radiology, St. Luke's International Hospital, Tokyo, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Yamakawa |D Akira |u Department of Orthopaedic Surgery, St. Luke's International Hospital, Tokyo, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Niitsu |D Mamoru |u Department of Radiology, Saitama Medical College, Moro, Saitama, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Morita |D Wataru |u Department of Orthopaedic Surgery, St. Luke's International Hospital, Tokyo, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Hoshikawa |D Yoshimitsu |u Department of Orthopaedic Surgery, St. Luke's International Hospital, Tokyo, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Akita |D Keiichi |u Unit of Clinical Anatomy, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, 113-8519, Tokyo, Japan |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Knee Surgery, Sports Traumatology, Arthroscopy |d Springer Berlin Heidelberg |g 23/5(2015-05-01), 1489-1497 |x 0942-2056 |q 23:5<1489 |1 2015 |2 23 |o 167 | ||