Masaki Takao

Summary

Affiliation: University of Tokyo
Country: Japan

Publications

  1. doi request reprint Iliosacral screw insertion using CT-3D-fluoroscopy matching navigation
    Masaki Takao
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2 2 Yamadaoka, Suita, Osaka 565 0871, Japan Electronic address
    Injury 45:988-94. 2014
  2. doi request reprint Metaphyseal bone collapse mimicking slipped capital femoral epiphysis in severe renal osteodystrophy
    Masaki Takao
    Department of Orthopedic Surgery, Osaka University Graduate School of Medicine, Yamadaoka 2 2, Suita, Osaka 565 0871, Japan
    J Clin Endocrinol Metab 97:3851-6. 2012
  3. doi request reprint Application of a CT-3D fluoroscopy matching navigation system to the pelvic and femoral regions
    Masaki Takao
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
    Comput Aided Surg 17:69-76. 2012
  4. doi request reprint Repair in osteonecrosis of the femoral head: MR imaging features at long-term follow-up
    Masaki Takao
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2 2 Yamadaoka, Suita 565 0871 Osaka, Japan
    Clin Rheumatol 29:841-8. 2010
  5. doi request reprint Cementless modular total hip arthroplasty with subtrochanteric shortening osteotomy for hips with developmental dysplasia
    Masaki Takao
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Japan
    J Bone Joint Surg Am 93:548-55. 2011
  6. ncbi request reprint Longitudinal quantitative evaluation of lesion size change in femoral head osteonecrosis using three-dimensional magnetic resonance imaging and image registration
    Masaki Takao
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2 2 Yamadaoka, Suita, Osaka 565 0871, Japan
    J Orthop Res 24:1231-9. 2006
  7. ncbi request reprint Spontaneous regression of steroid-related osteonecrosis of the knee
    Masaki Takao
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
    Clin Orthop Relat Res 452:210-5. 2006
  8. doi request reprint Accuracy of a 3D fluoroscopic navigation system using a flat-panel detector-equipped C-arm
    Masaki Takao
    Department of Orthopaedic Sugery, Osaka University Graduate School of Medicine, Japan
    Comput Aided Surg 16:234-9. 2011
  9. ncbi request reprint Application of 3D-MR image registration to monitor diseases around the knee joint
    Masaki Takao
    Department of Orthopedic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
    J Magn Reson Imaging 22:656-60. 2005
  10. ncbi request reprint Application of three-dimensional magnetic resonance image registration for monitoring hip joint diseases
    Masaki Takao
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Osaka 565 0871, Japan
    Magn Reson Imaging 23:665-70. 2005

Collaborators

Detail Information

Publications43

  1. doi request reprint Iliosacral screw insertion using CT-3D-fluoroscopy matching navigation
    Masaki Takao
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2 2 Yamadaoka, Suita, Osaka 565 0871, Japan Electronic address
    Injury 45:988-94. 2014
    ....
  2. doi request reprint Metaphyseal bone collapse mimicking slipped capital femoral epiphysis in severe renal osteodystrophy
    Masaki Takao
    Department of Orthopedic Surgery, Osaka University Graduate School of Medicine, Yamadaoka 2 2, Suita, Osaka 565 0871, Japan
    J Clin Endocrinol Metab 97:3851-6. 2012
    ..Slipped capital femoral epiphysis is a well-recognized skeletal complication of renal osteodystrophy in adolescence, which is distinct from idiopathic slipped capital femoral epiphysis in its etiology...
  3. doi request reprint Application of a CT-3D fluoroscopy matching navigation system to the pelvic and femoral regions
    Masaki Takao
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
    Comput Aided Surg 17:69-76. 2012
    ..The aim of this study was to find the proper location of the fluoroscopic imaging center in order to apply a CT-based 3D fluoroscopy matching navigation system in the pelvic and femoral regions...
  4. doi request reprint Repair in osteonecrosis of the femoral head: MR imaging features at long-term follow-up
    Masaki Takao
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2 2 Yamadaoka, Suita 565 0871 Osaka, Japan
    Clin Rheumatol 29:841-8. 2010
    ..In conclusion, reparative process was limited to the periphery of osteonecrosis over a long period of time unless collapse had occurred. If collapse had ceased minimally, the reconstructive repair process could be facilitated...
  5. doi request reprint Cementless modular total hip arthroplasty with subtrochanteric shortening osteotomy for hips with developmental dysplasia
    Masaki Takao
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Japan
    J Bone Joint Surg Am 93:548-55. 2011
    ....
  6. ncbi request reprint Longitudinal quantitative evaluation of lesion size change in femoral head osteonecrosis using three-dimensional magnetic resonance imaging and image registration
    Masaki Takao
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2 2 Yamadaoka, Suita, Osaka 565 0871, Japan
    J Orthop Res 24:1231-9. 2006
    ..We demonstrated that some early lesions detected less than a year after initial steroid treatment can show size reduction with image registration as well as with volume measurements...
  7. ncbi request reprint Spontaneous regression of steroid-related osteonecrosis of the knee
    Masaki Takao
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
    Clin Orthop Relat Res 452:210-5. 2006
    ..Regression can occur in some patients with early steroid-related osteonecrosis of the knee, and the time between initiation of steroid treatment and its diagnosis might be the most significant predictive factor...
  8. doi request reprint Accuracy of a 3D fluoroscopic navigation system using a flat-panel detector-equipped C-arm
    Masaki Takao
    Department of Orthopaedic Sugery, Osaka University Graduate School of Medicine, Japan
    Comput Aided Surg 16:234-9. 2011
    ....
  9. ncbi request reprint Application of 3D-MR image registration to monitor diseases around the knee joint
    Masaki Takao
    Department of Orthopedic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
    J Magn Reson Imaging 22:656-60. 2005
    ..To estimate the accuracy and consistency of a method using a voxel-based MR image registration algorithm for precise monitoring of knee joint diseases...
  10. ncbi request reprint Application of three-dimensional magnetic resonance image registration for monitoring hip joint diseases
    Masaki Takao
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Osaka 565 0871, Japan
    Magn Reson Imaging 23:665-70. 2005
    ..We believe that this method is sufficiently accurate for monitoring hip joint diseases...
  11. doi request reprint Incidence and predictors of osteonecrosis among cyclosporin- or tacrolimus-treated renal allograft recipients
    Masaki Takao
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Yamadaoka 2 2, Suita, 565 0871, Osaka, Japan
    Rheumatol Int 31:165-70. 2011
    ..In the patients treated with improved immunosuppressive regimens, delayed graft function was a significant early predictor of osteonecrosis...
  12. doi request reprint In vivo implant fixation of carbon fiber-reinforced PEEK hip prostheses in an ovine model
    Ichiro Nakahara
    Department of Orthopaedic Surgery, Osaka National Hospital, Osaka, Japan
    J Orthop Res 31:485-92. 2013
    ..Cementless fixation can be achieved using HA-coated CFR/PEEK implants, even under load-bearing conditions...
  13. pmc Modular acetabular reconstructive cup in acetabular revision total hip arthroplasty at a minimum ten year follow-up
    Takashi Sakai
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2 2, Yamadaoka, 565 0871, Suita, Japan
    Int Orthop 37:605-10. 2013
    ..The purpose of this study was to clarify minimum ten year follow-up results of this cup system with morsellised allografts in revision cases...
  14. doi request reprint Incidence and natural course of initial polar gaps in Birmingham Hip Resurfacing cups
    Satoshi Nakasone
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
    J Arthroplasty 27:1676-82. 2012
    ....
  15. doi request reprint Histological characteristics of the human femoral head in patients with femoral neck fracture
    Takashi Sakai
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2 2, Yamadaoka, 565 0871, Suita, Japan
    Virchows Arch 461:705-11. 2012
    ....
  16. pmc Does the extent of osteonecrosis affect the survival of hip resurfacing?
    Satoshi Nakasone
    Department of Orthopaedic Medical Engineering, Osaka University Graduate School of Medicine, Yamadaoka 2 2, Suita, Osaka, 565 0871, Japan
    Clin Orthop Relat Res 471:1926-34. 2013
    ..The effect of the extent of osteonecrosis on the survival of hip resurfacing for osteonecrosis of the femoral head (ONFH) has not been well documented, but is a potentially important variable in the decision to perform resurfacing...
  17. doi request reprint MRI-based surgical simulation of transtrochanteric rotational osteotomy for femoral head osteonecrosis
    Tsuyoshi Koyama
    Division of Robotic Therapy, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
    J Orthop Res 27:447-51. 2009
    ..Our surgical simulation is useful for evaluating the postoperative intact ratio and for determining indications for TRO as well as the optimal angle of femoral head rotation and varus angulation...
  18. doi request reprint Synovial joint fluid cytokine levels in hip disease
    Hirohito Abe
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2 2 Yamadaoka, Suita, Osaka 5650871, Japan
    Rheumatology (Oxford) 53:165-72. 2014
    ..The purpose of this study was to evaluate cytokine level characteristics in the hip joint fluid, including rapidly destructive coxopathy (RDC), OA, osteonecrosis (ON) of the femoral head and RA...
  19. doi request reprint Ultrasound screening of periarticular soft tissue abnormality around metal-on-metal bearings
    Takashi Nishii
    Department of Orthopaedic Medical Engineering, Osaka University Graduate School of Medicine, 2 2 Yamadaoka, Suita, Osaka, Japan
    J Arthroplasty 27:895-900. 2012
    ..Ultrasound examination provides sensitive screening of soft tissue reactions around MoM bearings and may be useful in monitoring progression and defining treatment for periarticular soft tissue abnormalities...
  20. doi request reprint Interfacial shear strength of bioactive-coated carbon fiber reinforced polyetheretherketone after in vivo implantation
    Ichiro Nakahara
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
    J Orthop Res 30:1618-25. 2012
    ..The achieved interfacial shear strength of the HA-coated CFR/PEEK implant is of the same level as that of grit-blasted titanium alloy with HA...
  21. doi request reprint The results of a press-fit-only technique for acetabular fixation in hip dysplasia
    Masaki Takao
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
    J Arthroplasty 26:562-8. 2011
    ..The minimum cup-CE angle was 8.4° (mean, 26.3°). Bone-cup contact of more than 8.4° of the cup-CE angle was large enough for press-fit cups to resist superior directed loads during this follow-up period...
  22. doi request reprint Different magnetic resonance imaging features in two types of nontraumatic rabbit osteonecrosis models
    Masaki Takao
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Osaka 565 0871, Japan
    Magn Reson Imaging 27:233-9. 2009
    ..These results indicated that development of necrotic lesions in the single-dose steroid ON model was not accompanied by as diffuse a femoral hemodynamic change as the two-dose horse serum ON model...
  23. pmc Is the transverse acetabular ligament a reliable cup orientation guide?
    Hirohito Abe
    Departments of Orthopaedic Medical Engineering, Osaka University Graduate School of Medicine, Osaka, Japan
    Acta Orthop 83:474-80. 2012
    ..We investigated the variations in TAL anatomy and the TAL-guided cup orientation...
  24. pmc Does CT-based navigation improve the long-term survival in ceramic-on-ceramic THA?
    Nobuhiko Sugano
    Department of Orthopaedic Medical Engineering, Osaka University Graduate School of Medicine, Yamadaoka 2 2, Suita, Osaka 565 0871, Japan
    Clin Orthop Relat Res 470:3054-9. 2012
    ..Although navigated THA provides improved precision in implant positioning and alignment, it is unclear whether these translate into long-term implant survival...
  25. pmc High survival of dome pelvic osteotomy in patients with early osteoarthritis from hip dysplasia
    Takashi Sakai
    Department of Orthopedic Surgery, Osaka University Graduate School of Medicine, 2 2, Yamadaoka, Suita 565 0871, Japan
    Clin Orthop Relat Res 470:2573-82. 2012
    ..The dome pelvic osteotomy (DPO) has the advantage of allowing a larger weightbearing surface, and congruity in the sagittal plane presumably would reduce the joint contact stress and perhaps increase longevity...
  26. doi request reprint Eleven- to 14-year follow-up results of cementless total hip arthroplasty using a third-generation alumina ceramic-on-ceramic bearing
    Nobuhiko Sugano
    Department of Orthopaedic Medical Engineering, Osaka University Graduate School of Medicine, Osaka, Japan
    J Arthroplasty 27:736-41. 2012
    ..7% for the overall implants, respectively. We conclude that cementless THA with the third-generation ceramic-on-ceramic hip bearing provided an excellent survivorship and eliminated periprosthetic osteolysis for 11 to 14 years...
  27. doi request reprint Distribution of TRAP-positive cells and expression of HIF-1alpha, VEGF, and FGF-2 in the reparative reaction in patients with osteonecrosis of the femoral head
    Weizhe Li
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
    J Orthop Res 27:694-700. 2009
    ....
  28. ncbi request reprint Five-year results of metal-on-metal resurfacing arthroplasty in Asian patients
    Takashi Nishii
    Department of Orthopaedic Surgery, Osaka University Medical School E3, Suita, Osaka, Japan
    J Arthroplasty 22:176-83. 2007
    ..Metal-on-metal resurfacing arthroplasty in Japanese patients, who have a different distribution of hip diseases from European and American patients, showed similarly promising early clinical results...
  29. doi request reprint Gender differences in 3D morphology and bony impingement of human hips
    Ichiro Nakahara
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2 2 Yamadaoka, Suita, Osaka 5650871, Japan
    J Orthop Res 29:333-9. 2011
    ..In conclusion, significant gender differences were observed in the acetabular and femoral morphology, which led to significant gender differences in ROM until bony impingement...
  30. doi request reprint Comparison of navigation accuracy in THA between the mini-anterior and -posterior approaches
    Takehito Hananouchi
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
    Int J Med Robot 5:20-5. 2009
    ..The accuracy of a CT-based hip navigation might depend on surgical approaches, resulting in varying accuracy of implant alignment...
  31. doi request reprint Computational measurement of joint space width and structural parameters in normal hips
    Takashi Nishii
    Department of Orthopaedic Medical Engineering, Osaka University Graduate School of Medicine, 2 2 Yamadaoka, Suita, Osaka 565 0871, Japan
    Arch Orthop Trauma Surg 132:591-8. 2012
    ..We investigated influential factors on JSW using semiautomatic computational software on pelvic radiographs in asymptomatic subjects without radiological osteoarthritic findings...
  32. doi request reprint Novel surface modifications of carbon fiber-reinforced polyetheretherketone hip stem in an ovine model
    Ichiro Nakahara
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
    Artif Organs 36:62-70. 2012
    ..Bone resorption and osteopenia observed with the Ti stems was not found with the CFRP design...
  33. doi request reprint Eight-year wear analysis in Longevity highly cross-linked polyethylene liners comparing 26- and 32-mm heads
    Ichiro Nakahara
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2 2 Yamadaoka, Suita, Osaka 565 0871, Japan
    Arch Orthop Trauma Surg 131:1731-7. 2011
    ..We compared the in vivo wear of Longevity highly cross-linked polyethylene liners at 8-year follow-up using 26- or 32-mm cobalt-chromium heads...
  34. ncbi request reprint Influence of component positions on dislocation: computed tomographic evaluations in a consecutive series of total hip arthroplasty
    Takashi Nishii
    Department of Orthopaedic Surgery, Osaka University Medical School, Suita, Japan
    J Arthroplasty 19:162-6. 2004
    ....
  35. doi request reprint Jogging after total hip arthroplasty
    Hirohito Abe
    Takashi Sakai, Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2 2 Yamadaoka, Suita, 565 0871, Japan
    Am J Sports Med 42:131-7. 2014
    ..Jogging has been classified as a high-impact sport, and jogging after total hip arthroplasty (THA) has not been well documented...
  36. doi request reprint Comparison of mini-incision total hip arthroplasty through an anterior approach and a posterior approach using navigation
    Nobuhiko Sugano
    Department of Orthopedic Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565 0871, Japan
    Orthop Clin North Am 40:365-70. 2009
    ..The intraoperative joint stability measurements showed no large difference between the two groups when malpositioning of the cup was eliminated...
  37. doi request reprint Dynamic measurements of hip movement in deep bending activities after total hip arthroplasty using a 4-dimensional motion analysis system
    Nobuhiko Sugano
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
    J Arthroplasty 27:1562-8. 2012
    ..Thus, particular postoperative precautions for Japanese-style activities are not required...
  38. ncbi request reprint Corticobasal degeneration as cause of progressive non-fluent aphasia: clinical, radiological and pathological study of an autopsy case
    Masaki Takao
    Department of Neurology, Mihara Memorial Hospital, Isesaki, Gunma, Japan
    Neuropathology 26:569-78. 2006
    ..Clinical diagnosis of corticobasal degeneration sometimes is difficult in individuals with atypical clinical presentations. More exact clinical and radiological criteria may warrant a diagnosis of corticobasal degeneration...
  39. ncbi request reprint 'Hot-cross bun sign' of multiple system atrophy
    Masaki Takao
    Department of Cognitive and Intractable Neurological Disorders, Mihara Memorial Hospital, Isesaki
    Intern Med 46:1883. 2007
  40. ncbi request reprint Severe parkinsonism following endoscopic third ventriculostomy for non-communicating hydrocephalus--case report
    Takenori Akiyama
    Department of Neurosurgery, Keio University School of Medicine, Tokyo, Japan
    Neurol Med Chir (Tokyo) 51:60-3. 2011
    ..Careful perioperative management not leading to excessive dilation of the the ventricles should be considered for ETV for non-communicating hydrocephalus to avoid this unexpected complication...
  41. doi request reprint CT-3D-fluoroscopy matching navigation can reduce the malposition rate of iliosacral screw insertion for less-experienced surgeons
    Masaki Takao
    Departments of Orthopaedic Surgery, and Orthopaedic Medical Engineering, Graduate School of Medicine, Osaka University, Osaka, Japan
    J Orthop Trauma 27:716-21. 2013
    ....
  42. ncbi request reprint Dementia with Lewy bodies in a Nigerian: a case report
    Adesola Ogunnyi
    Department of Medicine, University of Ibadan, Nigeria
    Int Psychogeriatr 14:211-8. 2002
    ..The case presented highlights the varied clinical presentation of DLB, and is intended to raise awareness about another possible cause of dementia in Nigerian subjects...
  43. ncbi request reprint A novel mutation (G217D) in the Presenilin 1 gene ( PSEN1) in a Japanese family: presenile dementia and parkinsonism are associated with cotton wool plaques in the cortex and striatum
    Masaki Takao
    Department of Neurology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku ku, Tokyo 160 8582, Japan
    Acta Neuropathol 104:155-70. 2002
    ..This study provides further evidence of clinical and pathological heterogeneity in dementing illnesses associated with PSEN1 mutations...