• KOLs Community
    • Spinal
    • Spinal Alignment
    • Hiroshi Tamai
    • Hiroshi Tamai

      Hiroshi Tamai

      Department of Orthopaedic Surgery, Shimoshizu National Hospital, Yotsukaido, JPN | Department of Orthopaedic Surgery, Shimoshizu National Hospital, Yotsukaido, Japan. | ...



      KOL Resume for Hiroshi Tamai


      Department of Orthopaedic Surgery, Shimoshizu National Hospital, Yotsukaido, JPN


      Department of Orthopaedic Surgery, Shimoshizu National Hospital, Yotsukaido, Japan.


      Departments of1Orthopaedic Surgery and.


      Department of Orthopaedic Surgery, Shimoshizu National Hospital, Yotsukaido, Japan


      Department of Orthopaedic Surgery, Shimoshizu National Hospital, 934-5, Shikawatashi, Yotsukaido, Chiba 284-0003 Japan


      Department of Orthopaedic Surgery, National Hospital Organization Shimoshizu National Hospital, Yotsukaido, Japan.


      Department of Orthopedic Surgery, National Hospital Organization Shimoshizu National Hospital, Yotsukaido, Chiba 284-0003, Japan


      Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, 260-8670, Chiba, Japan


      Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University 1‐8‐1, Inohana, Chuo‐ku, Chiba 260‐8677, Japan



      Hiroshi Tamai: Influence Statistics

      Sample of concepts for which Hiroshi Tamai is among the top experts in the world.
      Concept World rank
      efficacy stage surgery #13
      tss lss #13
      smi 546 #13
      symptoms tandem #13
      lss clinical symptoms #13
      sva tss #13
      lumbar decompression efficacy #13
      tss sva #13
      onestage decompression surgery #13
      lss tss #13
      intraspinal stenosis #14
      vcf body #14
      nonvcf #14
      nonvcf age #14
      vcf nonvcf #14
      intraspinal zone #14
      nonvcf bmd #14
      vcfs low bmd #14
      bmd nonvcf #14
      042 sensitivity 857 #15
      vcfs low #15
      cut 042 #15
      foraminal region pain #15
      vertebral foraminal stenosis #15
      established 042 #15
      leg pain myomectomy #15
      05 sva #15
      lumbar discrimination #15
      ratio cutoff 839 #15
      lumbar intraspinal zone #15
      p001 adc ratio #15
      extraforaminal values #15
      tractography foraminal region #15
      nerves discriminate #15
      diagnosis foraminal stenosis #15
      diagnosis adc values #15
      857 false #15
      042 839 #15
      myomectomy abnormalities #15
      discriminate lumbar #15
      massive uterine myoma #15
      dti parameters discrimination #15
      ratio adc ratio #15
      cut 839 #15
      extraforaminal values tractography #15
      lumbar intraspinal stenosis #15
      concave lumbar nerve #16
      bmd vcf #16
      psoas major convex #16
      vcf bmd #16


      Prominent publications by Hiroshi Tamai

      KOL-Index: 12562

      BACKGROUND: Age-related sarcopenia can cause various forms of physical disabilities. We investigated how sarcopenia affects degenerative lumbar scoliosis (DLS) and lumbar spinal canal stenosis (LSCS).

      METHODS: Subjects comprised 40 elderly women (mean age 74 years) with spinal disease whose chief complaints were low back pain and lower limb pain. They included 15 cases of DLS (mean 74.8 years) and 25 cases of LSCS (mean age 72.9 years). We performed whole-body dual-energy X-ray ...

      Known for Lumbar Scoliosis | Spinal Alignment | Sarcopenia Low Pain | Muscle Mass | Sagittal Vertical Axis
      KOL-Index: 8980

      A tight fixation between bone and implant materials is of great importance for a successful outcome of procedures such as total knee arthroplasty (TKA) and total hip arthroplasty (THA). Surface modification of titanium metal and titanium alloy is one of the attractive methods to improve the biological affinity of orthopedic prostheses. Recent studies reported that titanium substrates were provided with bone-bonding ability, that is, osteoconductivity, through a chemical treatment with ...

      Known for Titanium Fiber Mesh | Tantalum Chloride | Hydrogen Peroxide Solution | Surface Modification | Bone Bonding
      KOL-Index: 8767

      BackgroundSeveral studies have reported varus-valgus stability in the extension position after total knee arthroplasty (TKA). However, few studies have evaluated joint laxity in the flexion position postoperatively. The purpose of the study was to evaluate joint laxity against distal traction force on flexion after cruciate-retaining and posterior-stabilized total knee arthroplasties.MethodsA total of 44 knees (22 knees cruciate-retaining, 22 knees posterior-stabilized) in 40 patients ...

      Known for Knee Arthroplasty | Stabilized Total | Posterior Cruciate | Aged 80 | Varusvalgus Stability
      KOL-Index: 7955

      BACKGROUND CONTEXT: A double-crush lesion is a condition in which the lumbar nerve is compressed both medially and laterally in the spinal canal, where diagnosis can be very difficult, and is a factor leading to poor surgical success rates.

      PURPOSE: Diffusion tensor imaging (DTI) was used to determine DTI parameter fractional anisotropy (FA) values and apparent diffusion coefficient (ADC) in both intraspinal column lesions alone and in double-crush lesions.

      STUDY DESIGN: This study used ...

      Known for Lumbar Nerve | Tensor Imaging | Spinal Canal | Dti Parameters | Adc Values
      KOL-Index: 7121

      BACKGROUND: Age-related sarcopenia may cause physical dysfunction. We investigated the involvement of sarcopenia in dropped head syndrome (DHS).

      METHODS: Our study subjects were ten elderly women with idiopathic DHS (mean age 75.1 years, range 55-89). Twenty age- and sex-matched volunteers (mean age 73.0, range 58-83) served as controls. We used a bioelectrical impedance analyzer (BIA) to analyze body composition, including appendicular skeletal muscle mass index (SMI; appendicular lean ...

      Known for Dropped Head Syndrome | Skeletal Muscle Mass | Dhs Subjects | Cervical Spine | Neck Muscles
      KOL-Index: 6029

      STUDY DESIGN: Retrospective observational study.

      PURPOSE: We considered the relationship between spinal alignment and skeletal muscle mass on clinical outcomes following a surgery for lumbar spinal stenosis (LSS).

      OVERVIEW OF LITERATURE: There are no reports of preoperative factors predicting residual low back pain following surgery for LSS.

      METHODS: Our target population included 34 women (mean age, 74.4 years) who underwent surgery for LSS. Prior to and 6 months after the surgery, ...

      Known for Lumbar Spinal Stenosis | Muscle Mass | Postoperative Outcomes | Low Pain | Mineral Density
      KOL-Index: 6016

      Much progress has been made in neuroimaging with Magnetic Resonance neurography and Diffusion Tensor Imaging (DTI) owing to higher magnetic fields and improvements in pulse sequence technology. Reports on lumbar nerve DTI have also increased considerably. Many studies have shown that the use of DTI in lumbar nerve lesions, such as lumbar foraminal stenosis and lumbar disc herniation, makes it possible to capture images of interruptions of tractography at stenotic sties, enabling the ...

      Known for Diffusion Tensor Imaging | Lumbar Nerve | Magnetic Resonance | Clinical Applications | Adc Values
      KOL-Index: 4290

      STUDY DESIGN: Retrospective observational study.

      PURPOSE: To examine fractional anisotropy (FA) values and apparent diffusion coefficient (ADC) values of damaged nerves to discriminate between lumbar intraspinal stenosis (IS) and foraminal stenosis (FS) using diffusion tensor imaging (DTI).

      OVERVIEW OF LITERATURE: It is important in the selection of surgical procedure to discriminate between lumbar IS and FS, but such discrimination is difficult.

      METHODS: There were 9 cases of IS, 7 ...

      Known for Foraminal Stenosis | Adc Values | Diffusion Tensor Imaging | Nerve Root | Higher Accuracy
      KOL-Index: 3979

      Diagnosis of lumbar foraminal stenosis remains difficult. Here, we report on a case in which bilateral lumbar foraminal stenosis was difficult to diagnose, and in which diffusion tensor imaging (DTI) was useful. The patient was a 52-year-old woman with low back pain and pain in both legs that was dominant on the right. Right lumbosacral nerve compression due to a massive uterine myoma was apparent, but the leg pain continued after a myomectomy was performed. No abnormalities were ...

      Known for Foraminal Stenosis | Diffusion Tensor Imaging | Low Pain | Interbody Fusion
      KOL-Index: 3054

      OBJECTIVE: It is important to develop an easy means of diagnosing lumbar foraminal stenosis (LFS) in a general practice setting. We investigated the use of the Japanese Orthopaedic Association Back Pain Evaluation Questionnaire (JOABPEQ) to diagnose LFS in symptomatic patients.

      METHODS: Subjects included 13 cases (mean age, 72 years) with LFS, and 30 cases (mean age, 73 years) with lumbar spinal canal stenosis (LSCS) involving one intervertebral disc. The visual analogue scale score for ...

      Known for Lumbar Foraminal Stenosis | Pain Evaluation | Orthopaedic Association | Intervertebral Disc | Questionnaire Joabpeq
      KOL-Index: 2759

      OBJECTIVEThe purpose of this study was to determine the relationship between vertebral bodies, psoas major morphology, and the course of lumbar nerve tracts using diffusion tensor imaging (DTI) before lateral interbody fusion (LIF) to treat spinal deformities.METHODSDTI findings in a group of 12 patients (all women, mean age 74.3 years) with degenerative lumbar scoliosis (DLS) were compared with those obtained in a matched control group of 10 patients (all women, mean age 69.8 years) ...

      Known for Degenerative Lumbar Scoliosis | Women Age | L4 5 | Interbody Fusion
      KOL-Index: 2435

      We have operated total knee arthroplasty in a patient with bilateral congenital dislocation of the patella treated with a different method in each knee.

      Known for Total Knee Arthroplasty | Congenital Dislocation
      KOL-Index: 2358

      STUDY DESIGN: A retrospective observational study was performed.

      PURPOSE: We investigated the relationships between skeletal muscle mass, bone mineral density (BMD), and trabecular bone score (TBS) in patients with osteoporotic vertebral compression fractures (VCFs).

      OVERVIEW OF LITERATURE: The TBS has attracted attention as a measurement of trabecular bone microarchitecture. It is derived from data obtained using dual-energy X-ray absorptiometry (DXA) and is a reported indicator of ...

      Known for Bone Mineral Density | Osteoporotic Vertebral | Compression Fractures | Identified Risk | Design Retrospective
      KOL-Index: 2010

      Introduction: To investigate the risk of epidural hematoma after spinous process-splitting laminectomy (SPSL).

      Methods: A total of 137 cases (mean age, 72.4 years; 68 men) of SPSL were included. Of these, there were instances (3.7%; mean age, 70.5 years; all male) of postoperative development of new neurologic deficit due to epidural hematoma requiring reoperation. The 133 subjects (72.5 years; 64 men) with normal postoperative course were used as controls, and comparisons were made ...

      Known for Epidural Hematoma | Lumbar Spinal | 3 Cases

      Key People For Spinal Alignment

      Top KOLs in the world
      adolescent idiopathic scoliosis spinal deformity background data
      Frank J Schwab
      adult spinal deformity 2 years pelvic tilt
      Virginie C LaFage
      adult spinal deformity spine surgery pelvic tilt
      Steven D Glassman
      lumbar fusion quality outcomes database adult spinal deformity
      Christopher I Shaffrey
      adult spinal deformity surgical treatment spine surgery
      JeanPierre C Farcy
      adult scoliosis pelvic tilt spinal deformity

      Hiroshi Tamai:Expert Impact

      Concepts for whichHiroshi Tamaihas direct influence:Spinal alignment,  Skeletal muscle mass,  Diffusion tensor imaging,  Lumbar nerve,  Foraminal stenosis,  Lumbar spinal stenosis,  Titanium fiber mesh,  Lumbar nerves.

      Hiroshi Tamai:KOL impact

      Concepts related to the work of other authors for whichfor which Hiroshi Tamai has influence:Diffusion tensor imaging,  Lumbar spinal stenosis,  Muscle mass,  Nerve roots,  Patients sarcopenia,  Total knee arthroplasty,  Spinal alignment.



      Is this your profile? manage_accounts Claim your profile content_copy Copy URL code Embed Link to your profile

      Department of Orthopaedic Surgery, Shimoshizu National Hospital, Yotsukaido, JPN | Department of Orthopaedic Surgery, Shimoshizu National Hospital, Yotsukaido, Japan. | Department of Orthopaedic Surgery, Shimoshizu National Hospital, 934-5, Shikawata

    Download on the App StoreGet it on Google Play

    Copyright © 2023 - KOL means Key Opinion Leaders .

    KOL does not provide medical advice, diagnosis or treatment.