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Analysis of Proprioception of Hip Joint in Total Hip Arthroplasty

Open Journal of Orthopedics 2017年第2期7卷 53-62页

作者： Hitoshi Onishi Satoshi Nagoya tsuneo takebayashi Toshihiko Yamashita Department of Orthopaedic Surgery School of Medicine Sapporo Medical University Sapporo Japan Department of Musculoskeletal Biomechanics and Surgical Development School of Medicine Sapporo Medical University Sapporo Japan

Introduction: The instability of the joint is classified roughly into mechanical and functional. It is reported that the postoperative dislocation often occurs by the posterior approach of the THA and may be caused by functionality instability due to the injury of the periarticular soft tissue. We analyzed the joint position sense of the hip according to an approach of the THA and examined effect to give postoperative dislocation. Materials & Methods: 92 patients (184 hip joints) who received THA in our hospital were selected in the study. Cases in which position sensation measurements were insufficient were excluded. As for the classification, the posterior approach (PL groups) was 39 hips, anterolateral approach (AL groups) was 30 hips, and control group was 37 hips. Results: There was no significant difference between the AL group and PL group in the absolute reproduction angle error score (ARAES). The relative reproduction angle error scores (RRAES) for passive internal and external rotations and active internal rotation were significantly lower in the AL and control groups than the PL group. Discussion: This study was suggested that the hip joint position sense in the AL group was better retained for the preservation of the soft tissue.

关键词： Hip Joint Position Sense Total Hip Arthroplasty Proprioception

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Analysis of Degenerative Discs in Lumbar Spondylolisthesis Using MRI T2 Mapping

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Open Journal of Radiology 2012年第3期2卷 77-80页

作者： tsuneo takebayashi Hiroyuki Takashima Mitsunori Yoshimoto Yoshinori Terashima Hajime Tsuda Kazunori Ida Toshihiko Yamashita Department of Orthopedic Surgery School of Medicine Sapporo Medical University Sapporo Japan

Background: Spinal instability, including lumbar degenerative spondylolisthesis (DS), mainly results from degeneration of intervertebral discs (IVD) and the facet joints (FJ). Characterization of the relationship between IVD degeneration in cases of lumbar degenerative spondylolisthesis (DS), and T2 values may be useful for accurate noninvasive evaluation and subsequent treatment. Thus, the goal of this study was to measure T2 values of IVDs in cases with (DS) and without (NS) spondylolisthesis, and to characterize changes of IVDs in DS. Methods: A total of 40 subjects who presented with L4 spondylolisthesis comprised the DS group. Another 40 subjects who did not have lumbar spondylolisthesis, constituted the NS group. T2 values of IVDs were measured and compared in these groups. Results: T2 values for IVDs tended to be lower in the DS group than in the NS group, and these values were significantly different (p < 0.01) within the anterior annulus fibrosus (AF). No significant differences in T2 values between Meyerding grades I and II were observed in any areas of IVDs. Conclusions: It is speculated that in the early stages, the degeneration of the anterior AF develops and is related to the onset of lumbar spondylolisthesis, while in later stages, degeneration of facet joints influences the progression of spondylolisthesis.

关键词： Degenerative Spondylolisthesis Intervertebral Disc T2 Mapping

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