Atsushi Tasaki

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BACKGROUND The reverse shoulder prosthesis is a prosthesis that has been in clinical use in Europe since 1985 and was approved for use in the United States in 2004. This unique prosthesis has a baseplate attached to the glenoid, which holds a spherical component, while the humeral component includes a polyethylene insert that is flat. This design is the(More)
Laxity testing is an important part of the examination of any joint. In the shoulder, it presents unique challenges because of the complexity of the interactions of the glenohumeral and scapulothoracic joints. Many practitioners believe that laxity testing of the shoulder is difficult, and they are unclear about its role in evaluation of patients. The(More)
STUDY DESIGN Case report. OBJECTIVE To report a rare case of a penetrating injury to the cauda equina, secondary to a stab wound. SUMMARY OF BACKGROUND DATA Penetrating injuries affecting the cauda equina by stab wounds, not by gunshot wounds, are of extremely rare occurrence compared with penetrating spinal cord injuries and have been previously(More)
In this article, we have extensively studied and discussed the magnetic properties of acidic ferric hemoglobin and its isolated chains. The magnetic susceptibility, EPR and optical spectra of those samples were measured in the temperature region below 77 degrees K. By the magnetic susceptibility measurements, it could be made clear that at an acidic pH(More)
OBJECTIVE The objective of this study was to quantify fatty degeneration of the supraspinatus muscle by using a 2-point Dixon technique on 3-T MRI and to evaluate the correlation of muscular atrophy and fat fraction values among different severities of rotator cuff tears across differing ages and sexes. SUBJECTS AND METHODS Patients with shoulder pain (n(More)
PURPOSE Although induction heating cancer therapy (IHCT) using magnetic nanoparticles can be a promising approach to treatment-less multi-nodular cancers, the objective requirement for successful clinical application has not clearly been elucidated. We intended to define objective heat doses suitable for IHCT, especially focusing on the sizes of liver(More)
OBJECTIVES The purpose of this study is to evaluate magnetic resonance imaging (MRI) findings of the shoulder and hip joint in patients with polymyalgia rheumatica (PMR). METHODS MR images of a total of 25 PMR patients (23 shoulders and 6 hips), 43 rheumatoid arthritis (RA) patients (22 shoulders and 22 hips), and 50 control patients (25 shoulders and 25(More)
PURPOSE To evaluate the outcomes of a combination of an arthroscopic Bankart repair and an open Bristow procedure in relation to the subjective quality of performance in movements that are typical in rugby. METHODS Forty shoulders in 38 players who underwent surgery for traumatic anterior instability of the shoulder were reviewed. In all cases,(More)
RATIONALE AND OBJECTIVES Presurgical assessment of fatty degeneration is important in the management of patients with rotator cuff tears. The Goutallier classification is widely accepted as a qualitative scoring system, although it is highly observer-dependent and has poor reproducibility. The objective of this study was to quantify fatty degeneration of(More)