Takashi Sakai

Summary

Affiliation: University of Tokyo
Country: Japan

Publications

  1. 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
  2. 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
  3. 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
  4. 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
  5. 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
  6. doi request reprint Grafting with hydroxyapatite granules for defects of acetabular bone at revision total hip replacement: a minimum ten-year follow-up
    T Sakai
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2 2 Yamadaoka, Suita, Japan
    J Bone Joint Surg Br 92:1215-21. 2010
  7. ncbi request reprint A modular femoral neck and head system works well in cementless total hip replacement for patients with developmental dysplasia of the hip
    T Sakai
    Department of Orthopaedic Surgery, OsakaUniversity Graduate School of Medicine, Suita, Japan
    J Bone Joint Surg Br 92:770-6. 2010
  8. pmc Is vertical-center-anterior angle equivalent to anterior coverage of the hip?
    Takashi Sakai
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2 2, Yamadaoka, 565 0871, Suita, Japan
    Clin Orthop Relat Res 467:2865-71. 2009
  9. pmc Extent of osteonecrosis on MRI predicts humeral head collapse
    Takashi Sakai
    Department of Orthopedic Surgery, Osaka University Medical School, 2 2, Yamadaoka, 565 0871, Suita, Osaka, Japan
    Clin Orthop Relat Res 466:1074-80. 2008
  10. ncbi request reprint Bone scintigraphy screening for osteonecrosis of the shoulder in patients with non-traumatic osteonecrosis of the femoral head
    Takashi Sakai
    Department of Orthopaedic Surgery, Ikeda Municipal Hospital, 3 1 18, Johnan, Ikeda, 563 8510, Osaka, Japan
    Skeletal Radiol 31:650-5. 2002

Collaborators

Detail Information

Publications49

  1. 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...
  2. 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...
  3. 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...
  4. 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
    ....
  5. 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...
  6. doi request reprint Grafting with hydroxyapatite granules for defects of acetabular bone at revision total hip replacement: a minimum ten-year follow-up
    T Sakai
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2 2 Yamadaoka, Suita, Japan
    J Bone Joint Surg Br 92:1215-21. 2010
    ..03, Fisher's exact probability test). The linear wear and annual wear rate did not correlate with loosening. These results suggest that the long-term results of hydroxyapatite grafting with cement for type 2 and 3A hips are encouraging...
  7. ncbi request reprint A modular femoral neck and head system works well in cementless total hip replacement for patients with developmental dysplasia of the hip
    T Sakai
    Department of Orthopaedic Surgery, OsakaUniversity Graduate School of Medicine, Suita, Japan
    J Bone Joint Surg Br 92:770-6. 2010
    ..The modular system reduces the need for an elevated liner, thereby reducing the incidence of osteolysis. It gives a better range of movement and allows the surgeon to make an accurate adjustment of leg length...
  8. pmc Is vertical-center-anterior angle equivalent to anterior coverage of the hip?
    Takashi Sakai
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2 2, Yamadaoka, 565 0871, Suita, Japan
    Clin Orthop Relat Res 467:2865-71. 2009
    ..002). Although VCA-1 in normal hips shows true anterior coverage, the VCA angle does not indicate true anterior coverage in dysplastic hips, and VCA angle measurement in dysplastic hips should be used carefully...
  9. pmc Extent of osteonecrosis on MRI predicts humeral head collapse
    Takashi Sakai
    Department of Orthopedic Surgery, Osaka University Medical School, 2 2, Yamadaoka, 565 0871, Suita, Osaka, Japan
    Clin Orthop Relat Res 466:1074-80. 2008
    ..The extent of a necrotic lesion on MRI is useful to predict collapse of the humeral head...
  10. ncbi request reprint Bone scintigraphy screening for osteonecrosis of the shoulder in patients with non-traumatic osteonecrosis of the femoral head
    Takashi Sakai
    Department of Orthopaedic Surgery, Ikeda Municipal Hospital, 3 1 18, Johnan, Ikeda, 563 8510, Osaka, Japan
    Skeletal Radiol 31:650-5. 2002
    ..The present study attempted to investigate whether technetium bone scintigraphy is useful for screening of non-traumatic osteonecrosis of the shoulder (ONS)...
  11. ncbi request reprint The custom femoral component is an effective option for congenital hip dysplasia
    Takashi Sakai
    Department of Orthopaedic Surgery, Osaka National Hospital, Osaka University Medical School, Osaka, Japan
    Clin Orthop Relat Res 451:146-53. 2006
    ....
  12. doi request reprint Morphometric analysis of the femur in cerebral palsy: 3-dimensional CT study
    Shinichi Gose
    Department of Orthopaedic Surgery, Morinomiya Hospital, Osaka, Japan
    J Pediatr Orthop 30:568-74. 2010
    ....
  13. 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
    ....
  14. 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...
  15. 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
    ....
  16. pmc Proximal bone remodelling differed between two types of titanium long femoral components after cementless revision arthroplasty
    Daiki Iwana
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Kyowakai Hospital, Osaka, Japan
    Int Orthop 32:431-6. 2008
    ..The mean relative bone mass index increased from 21.6% to 31.4%. These results indicate that the configuration and surface coating of the stem have a significant influence on proximal bone remodelling after revision surgery...
  17. 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...
  18. 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...
  19. doi request reprint In vivo hip joint contact distribution and bony impingement in normal and dysplastic human hips
    Keisuke Akiyama
    Department of Orthopaedic Surgery, Osaka Kosei Nenkin Hospital, 4 2 78, Fukushima, Fukushima ku, Osaka, 553 0003, Japan
    J Orthop Res 31:1611-9. 2013
    ..These results can be used for analyzing disease progression in the dysplastic hip and pathogenesis of acetabular labral tear...
  20. 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...
  21. doi request reprint Verification of the Robin and Graham classification system of hip disease in cerebral palsy using three-dimensional computed tomography
    Shinichi Gose
    Department of Orthopaedic Surgery, Morinomiya Hospital, Osaka, Japan
    Dev Med Child Neurol 53:1107-12. 2011
    ..We evaluated the validity of the Robin and Graham classification system of hip disease in cerebral palsy (CP) using three-dimensional computed tomography in young people with CP...
  22. 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...
  23. doi request reprint Minimum five-year follow-up wear measurement of longevity highly cross-linked polyethylene cup against cobalt-chromium or zirconia heads
    Ichiro Nakahara
    Department of Orthopaedic Surgery, Osaka University, Graduate School of Medicine, Suita, Osaka, Japan
    J Arthroplasty 25:1182-7. 2010
    ..Osteolysis was not observed in any hips in either group. In conclusion, no advantage was seen for the 26-mm zirconia head compared with the 26-mm cobalt-chromium head in this period...
  24. 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...
  25. 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...
  26. ncbi request reprint Femoral anteversion, femoral offset, and abductor lever arm after total hip arthroplasty using a modular femoral neck system
    Takashi Sakai
    Department of Orthopaedic Surgery, Ikeda Municipal Hospital, 3 1 18, Johnan, Ikeda, Osaka 563 8510, Japan
    J Orthop Sci 7:62-7. 2002
    ..6 +/- 4.2 degree vs. 35.3 +/- 3.6 degree). This modular neck system effectively adjusted femoral anteversion and abductor lever arm in femora with various preoperative anteversion values...
  27. 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...
  28. 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...
  29. ncbi request reprint Sciatic nerve palsy after cementless total hip arthroplasty. Treatment by modular neck and calcar shortening: a case report
    Takashi Sakai
    Department of Orthopaedic Surgery, Ikeda Municipal Hospital, 3 1 18 Johnan, Ikeda, Osaka 563 8510, Japan
    J Orthop Sci 7:400-2. 2002
    ....
  30. ncbi request reprint Measurement of lesion area and volume by three-dimensional spoiled gradient-echo MR imaging in osteonecrosis of the femoral head
    Yuki Kishida
    Department of Orthopaedic Surgery, Osaka University Medical School, 2 2 Yamadaoka, Suita, Osaka, 564 0871, Japan
    J Orthop Res 21:850-8. 2003
    ..Three-dimensional SPGR imaging provides more accurate measurements of the area and volume of a necrotic lesion than T1-weighted SE imaging...
  31. doi request reprint Design and optimization of the oriented groove on the hip implant surface to promote bone microstructure integrity
    Yoshihiro Noyama
    Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2 1 Yamada oka, Suita, Osaka 565 0871, Japan
    Bone 52:659-67. 2013
    ....
  32. doi request reprint In vivo kinematic analysis of squatting after total hip arthroplasty
    Junichiro Koyanagi
    Department of Orthopaedic Biomaterial Science, Osaka University Graduate School of Medicine, Suita, Japan
    Clin Biomech (Bristol, Avon) 26:477-83. 2011
    ..The in vivo kinematics of squatting after total hip arthroplasty is unclear. The purpose of the present study was to determine the range of motion of the hip joint during squatting after total hip arthroplasty...
  33. 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...
  34. ncbi request reprint Stem fracture of the cementless spongy metal Lübeck hip prosthesis
    Yuki Kishida
    Department of Orthopaedic Surgery, Osaka University Medical School, Suita, Osaka, Japan
    J Arthroplasty 17:1021-7. 2002
    ..The fractures may be attributed to the combination of the lack of proximal support, a champagne-fluted canal, the fully porous stem made of a cast cobalt-chrome-molybdenum alloy, and the narrow dimension of the stem core...
  35. doi request reprint Morphometric analysis of acetabular dysplasia in cerebral palsy: three-dimensional CT study
    Shinichi Gose
    Department of Orthopaedic Surgery, Morinomiya Hospital, Osaka, Japan
    J Pediatr Orthop 29:896-902. 2009
    ..To elucidate the 3D geometry of the acetabulum and the extent of hip subluxation/dislocation in patients with cerebral palsy (CP), quantitative morphometric analysis was performed using 3D-CT data...
  36. ncbi request reprint Significance of lesion size and location in the prediction of collapse of osteonecrosis of the femoral head: a new three-dimensional quantification using magnetic resonance imaging
    Takashi Nishii
    Department of Orthopaedic Surgery, Osaka University Medical School, Suita, Japan
    J Orthop Res 20:130-6. 2002
    ..Quantitative analysis of lesion morphology demonstrated that lesion volume is strongly correlated with risk of collapse, and that lesion location is an important prognostic indicator of collapse in small necrotic lesions...
  37. ncbi request reprint Correlation between femoral neck version and strain on the femur after insertion of femoral prosthesis
    Naoya Umeda
    Department of Orthopaedic Surgery, Hoshigaoka Koseinenkin Hospital, 4 8 1 Hoshigaoka, Hirakata 573 8511, Japan
    J Orthop Sci 8:381-6. 2003
    ..Insertion of a femoral implant in excessive anteversion (or retroversion) may cause noticeably increased stress on the anterior and posterior aspects of the proximal femoral shaft...
  38. 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...
  39. ncbi 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
    ....
  40. 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...
  41. 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...
  42. ncbi 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...
  43. ncbi 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
    ....
  44. doi request reprint Validation of the femoral component placement during hip resurfacing: a comparison between the conventional jig, patient-specific template, and CT-based navigation
    Makoto Kitada
    Center of Arthroplasty, Kyowakai Hospital, Osaka, Japan
    Int J Med Robot 9:223-9. 2013
    ....
  45. 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...
  46. ncbi request reprint Navigation-aided visualization of lumbosacral nerves for anterior sacroiliac plate fixation: a case report
    Masaki Takao
    Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
    Int J Med Robot 10:230-6. 2014
    ..Anterior sacroiliac joint plate fixation for unstable pelvic ring fractures avoids soft tissue problems in the buttocks; however, the lumbosacral nerves lie in close proximity to the sacroiliac joint and may be injured during the procedure...
  47. 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
    ....
  48. ncbi request reprint Treatment of periprosthetic femoral fracture after cementless total hip arthroplasty with Ilizarov external fixation
    Takashi Sakai
    Department of Orthopaedic Surgery, Osaka National Hospital, Osaka, Japan
    J Arthroplasty 22:617-20. 2007
    ..Although this is a rare situation, where periprosthetic fracture and infection coexist, Ilizarov external fixation is a safe and reliable method for periprosthetic femoral fracture with infection...
  49. ncbi request reprint Evaluation of femoral perfusion in a non-traumatic rabbit osteonecrosis model with T2*-weighted dynamic MRI
    Takashi Tsuji
    Diagnostics Research Support, Preclinical Development Department, Nihon Schering, 2 6 64, Nishimiyahara, Yodogawa ku, Osaka 532 0004, Japan
    J Orthop Res 21:341-51. 2003
    ....