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Volumn 21, Issue 1, 2013, Pages 113-119

Open-wedge high tibial osteotomy: Comparison between manual and computer-assisted techniques

Author keywords

Computer assisted technique; mFTA; Open wedge high tibial osteotomy; Tibial slope

Indexed keywords

ADULT; AGED; ARTICLE; COMPARATIVE STUDY; COMPUTER ASSISTED SURGERY; CONTROLLED CLINICAL TRIAL; CONTROLLED STUDY; FEMALE; FOLLOW UP; HUMAN; KNEE; KNEE OSTEOARTHRITIS; MALE; METHODOLOGY; MIDDLE AGED; OSTEOTOMY; PROSPECTIVE STUDY; QUESTIONNAIRE; RADIOGRAPHY; RANDOMIZED CONTROLLED TRIAL; TIBIA; TREATMENT OUTCOME; VARUS KNEE;

EID: 84871923476     PISSN: 09422056     EISSN: 14337347     Source Type: Journal    
DOI: 10.1007/s00167-011-1785-5     Document Type: Article
Times cited : (78)

References (55)
  • 1
    • 7744219613 scopus 로고    scopus 로고
    • Effect of high tibial flexion osteotomy on cartilage pressure and joint kinematics: a biomechanical study in human cadaveric knees
    • Agneskirchner J, Hurschler C, Stukenborg-Colsman C, Imhoff AB, Lobenhoffer P (2004) Effect of high tibial flexion osteotomy on cartilage pressure and joint kinematics: a biomechanical study in human cadaveric knees. Arch Orthop Trauma Surg 124: 575-584.
    • (2004) Arch Orthop Trauma Surg , vol.124 , pp. 575-584
    • Agneskirchner, J.1    Hurschler, C.2    Stukenborg-Colsman, C.3    Imhoff, A.B.4    Lobenhoffer, P.5
  • 2
    • 69749086940 scopus 로고    scopus 로고
    • Closed-wedge high tibial osteotomy using computer-assisted surgery compared to the conventional technique
    • Bae DK et al (2009) Closed-wedge high tibial osteotomy using computer-assisted surgery compared to the conventional technique. J Bone Joint Surg Br 91: 1164-1171.
    • (2009) J Bone Joint Surg Br , vol.91 , pp. 1164-1171
    • Bae, D.K.1
  • 3
    • 0033958798 scopus 로고    scopus 로고
    • High tibial osteotomy with a calibrated osteotomy guide, rigid internal fixation and early motion
    • Billings A, Scott DF, Camargo MP, Hofman AA (2000) High tibial osteotomy with a calibrated osteotomy guide, rigid internal fixation and early motion. J Bone Joint Surg Am 82: 70-79.
    • (2000) J Bone Joint Surg Am , vol.82 , pp. 70-79
    • Billings, A.1    Scott, D.F.2    Camargo, M.P.3    Hofman, A.A.4
  • 4
    • 25844483854 scopus 로고    scopus 로고
    • Patellar height and the inclination of the tibial plateau after high tibial osteotomy. The open versus the closed-wedge technique
    • Brouwer RW, Bierma-Zeinstra SM, van Koeveringe AJ, Verhaar JA (2005) Patellar height and the inclination of the tibial plateau after high tibial osteotomy. The open versus the closed-wedge technique. J Bone Joint Surg Br 87: 1227-1232.
    • (2005) J Bone Joint Surg Br , vol.87 , pp. 1227-1232
    • Brouwer, R.W.1    Bierma-Zeinstra, S.M.2    van Koeveringe, A.J.3    Verhaar, J.A.4
  • 5
    • 39749178318 scopus 로고    scopus 로고
    • Tibial slope and patellar height after opening wedge high tibial osteotomy using autologous tricortical iliac bone graft
    • Chae D, Shetty GM, Lee DB, Choi HW, Han SB, Nha KW (2008) Tibial slope and patellar height after opening wedge high tibial osteotomy using autologous tricortical iliac bone graft. Knee 15: 128-133.
    • (2008) Knee , vol.15 , pp. 128-133
    • Chae, D.1    Shetty, G.M.2    Lee, D.B.3    Choi, H.W.4    Han, S.B.5    Nha, K.W.6
  • 6
    • 0018346938 scopus 로고
    • Upper tibial osteotomy for gonarthrosis. The evolution of the operation in the last 18 years and long-term results
    • Coventry MB (1979) Upper tibial osteotomy for gonarthrosis. The evolution of the operation in the last 18 years and long-term results. Orthop Clin North Am 10: 191-210.
    • (1979) Orthop Clin North Am , vol.10 , pp. 191-210
    • Coventry, M.B.1
  • 7
    • 0020030470 scopus 로고
    • Long-term results of upper tibial osteotomy for degenerative arthritis of the knee
    • Coventry MB, Bowman PW (1982) Long-term results of upper tibial osteotomy for degenerative arthritis of the knee. Acta Orthop Belg 48: 139-156.
    • (1982) Acta Orthop Belg , vol.48 , pp. 139-156
    • Coventry, M.B.1    Bowman, P.W.2
  • 8
    • 0027453062 scopus 로고
    • Proximal tibial osteotomy. A critical long-term study of eighty-seven cases
    • Coventry MB, Ilstrup DM, Wallrichs SL (1993) Proximal tibial osteotomy. A critical long-term study of eighty-seven cases. J Bone Joint Surg Am 75: 196-201.
    • (1993) J Bone Joint Surg Am , vol.75 , pp. 196-201
    • Coventry, M.B.1    Ilstrup, D.M.2    Wallrichs, S.L.3
  • 11
    • 0018648753 scopus 로고
    • The effect of high tibial osteotomy on osteoarthritis of the knee. An arthroscopic study of 54 knee joints
    • Fujisawa Y, Masuhara K, Shiomi S (1979) The effect of high tibial osteotomy on osteoarthritis of the knee. An arthroscopic study of 54 knee joints. Orthop Clin North Am 10: 585-608.
    • (1979) Orthop Clin North Am , vol.10 , pp. 585-608
    • Fujisawa, Y.1    Masuhara, K.2    Shiomi, S.3
  • 14
    • 33846888306 scopus 로고    scopus 로고
    • Tibial slope and high tibial osteotomy using the circular external fixator
    • Gunes T, Sen C, Erdem M (2007) Tibial slope and high tibial osteotomy using the circular external fixator. Knee Surg Sports Traumatol Arthrosc 15: 192-198.
    • (2007) Knee Surg Sports Traumatol Arthrosc , vol.15 , pp. 192-198
    • Gunes, T.1    Sen, C.2    Erdem, M.3
  • 15
    • 0033855464 scopus 로고    scopus 로고
    • Total knee arthroplasty after high tibial osteotomy: a medium-term review
    • Haddad F, Bentley G (2000) Total knee arthroplasty after high tibial osteotomy: a medium-term review. J Arthroplasty 15: 597-603.
    • (2000) J Arthroplasty , vol.15 , pp. 597-603
    • Haddad, F.1    Bentley, G.2
  • 16
    • 33745316522 scopus 로고    scopus 로고
    • Computer-assisted analysis of lower limb geometry: higher intraobserver reliability compared to conventional method
    • Hankemeier S, Gosling T, Richter M, Hufner T, Hochhausen C, Krettek C (2006) Computer-assisted analysis of lower limb geometry: higher intraobserver reliability compared to conventional method. Comput Aided Surg 11: 81-86.
    • (2006) Comput Aided Surg , vol.11 , pp. 81-86
    • Hankemeier, S.1    Gosling, T.2    Richter, M.3    Hufner, T.4    Hochhausen, C.5    Krettek, C.6
  • 17
    • 27844556405 scopus 로고    scopus 로고
    • Navigated intraoperative analysis of lover limb alignment
    • Hankemeier S, Hufner T, Wang G et al (2005) Navigated intraoperative analysis of lover limb alignment. Arch Orthop Trauma Surg 125: 531-535.
    • (2005) Arch Orthop Trauma Surg , vol.125 , pp. 531-535
    • Hankemeier, S.1    Hufner, T.2    Wang, G.3
  • 18
    • 33749353460 scopus 로고    scopus 로고
    • Navigated open-wedge high tibial osteotomy: advantages and disadvantages compared to the conventional technique in a cadaver study
    • Hankemeier S, Hufner T, Wang G et al (2006) Navigated open-wedge high tibial osteotomy: advantages and disadvantages compared to the conventional technique in a cadaver study. Knee Surg Sports Traumatol Arthrosc 14: 917-921.
    • (2006) Knee Surg Sports Traumatol Arthrosc , vol.14 , pp. 917-921
    • Hankemeier, S.1    Hufner, T.2    Wang, G.3
  • 19
    • 0023181959 scopus 로고
    • Proximal tibial osteotomy for osteoarthritis with varus deformity. A ten to thirteen-year followup study
    • Hernigou P, Medevielle D, Debeyre J, Goutallier D (1987) Proximal tibial osteotomy for osteoarthritis with varus deformity. A ten to thirteen-year followup study. J Bone Joint Surg Am 69: 332-354.
    • (1987) J Bone Joint Surg Am , vol.69 , pp. 332-354
    • Hernigou, P.1    Medevielle, D.2    Debeyre, J.3    Goutallier, D.4
  • 20
    • 79954525470 scopus 로고    scopus 로고
    • Control posterior tibial slope and patellar height in open-wedge valgus high tibial osteotomy
    • Hinterwimmer S et al (2011) Control posterior tibial slope and patellar height in open-wedge valgus high tibial osteotomy. Am J Sports Med 39: 851-856.
    • (2011) Am J Sports Med , vol.39 , pp. 851-856
    • Hinterwimmer, S.1
  • 21
    • 0025360761 scopus 로고
    • Normal axial alignment of the lower extremity and load bearing distribution at the knee
    • Hsu RW, Himeno S, Coventry MB, Chao EY (1990) Normal axial alignment of the lower extremity and load bearing distribution at the knee. Clin Orthop Relat Res 255: 215-227.
    • (1990) Clin Orthop Relat Res , vol.255 , pp. 215-227
    • Hsu, R.W.1    Himeno, S.2    Coventry, M.B.3    Chao, E.Y.4
  • 23
    • 0021171898 scopus 로고
    • High tibial osteotomy for varus gonarthrosis: a long-term follow-up study
    • Insall JN, Joseph DM, Msika C (1984) High tibial osteotomy for varus gonarthrosis: a long-term follow-up study. J Bone Joint Surg Am 66: 1040-1048.
    • (1984) J Bone Joint Surg Am , vol.66 , pp. 1040-1048
    • Insall, J.N.1    Joseph, D.M.2    Msika, C.3
  • 24
    • 0025264432 scopus 로고
    • High tibial osteotomy for medial osteoarthritis of the knee. A 5 to 7 and 11 year follow-up
    • Ivarsson I, Myrnerts R, Gillquist J (1990) High tibial osteotomy for medial osteoarthritis of the knee. A 5 to 7 and 11 year follow-up. J Bone Joint Surg Br 72: 238-244.
    • (1990) J Bone Joint Surg Br , vol.72 , pp. 238-244
    • Ivarsson, I.1    Myrnerts, R.2    Gillquist, J.3
  • 25
    • 0000719793 scopus 로고
    • Tibial osteotomy for osteoarthritis of the knee
    • Jackson JP, Waugh W (1961) Tibial osteotomy for osteoarthritis of the knee. J Bone Joint Surg Br 43: 746-751.
    • (1961) J Bone Joint Surg Br , vol.43 , pp. 746-751
    • Jackson, J.P.1    Waugh, W.2
  • 26
    • 77951254457 scopus 로고    scopus 로고
    • Avoiding intraoperative complications in open-wedge high tibial valgus osteotomy: technical advancement
    • Jacobi M, Wahl P, Jakob RP (2010) Avoiding intraoperative complications in open-wedge high tibial valgus osteotomy: technical advancement. Knee Surg Sport Traumatol Arthrosc 18: 200-203.
    • (2010) Knee Surg Sport Traumatol Arthrosc , vol.18 , pp. 200-203
    • Jacobi, M.1    Wahl, P.2    Jakob, R.P.3
  • 27
    • 0026436078 scopus 로고
    • Tibial osteotomy for varus gonarthrosis: indication, planning and operative technique
    • Jakob RP, Murphy SB (1992) Tibial osteotomy for varus gonarthrosis: indication, planning and operative technique. Instr Course Lect 41: 87-93.
    • (1992) Instr Course Lect , vol.41 , pp. 87-93
    • Jakob, R.P.1    Murphy, S.B.2
  • 28
    • 40149091371 scopus 로고    scopus 로고
    • Fine tuned' correction of tibial slope with a temporary external fixator in opening wedge high-tibial osteotomy
    • Jung K, Kim SJ, Lee SC, Song MB, Yoon KH (2008) 'Fine tuned' correction of tibial slope with a temporary external fixator in opening wedge high-tibial osteotomy. Knee Surg Sports Traumatol Athrosc 16: 305-310.
    • (2008) Knee Surg Sports Traumatol Athrosc , vol.16 , pp. 305-310
    • Jung, K.1    Kim, S.J.2    Lee, S.C.3    Song, M.B.4    Yoon, K.H.5
  • 31
    • 2942625783 scopus 로고    scopus 로고
    • Computer aided high tibial open wedge osteotomy
    • Keppler P, Gebhard F, Grutzner PA et al (2004) Computer aided high tibial open wedge osteotomy. Injury 35: S-A68-S-A78.
    • (2004) Injury , vol.35 , pp. 68-78
    • Keppler, P.1    Gebhard, F.2    Grutzner, P.A.3
  • 32
    • 0037267443 scopus 로고    scopus 로고
    • Medial opening-wedge high tibial osteotomy with use of porus hydroxyapatite to treat medial compartment osteoarthritis of the knee
    • Koshino T, Murase T, Saito T (2003) Medial opening-wedge high tibial osteotomy with use of porus hydroxyapatite to treat medial compartment osteoarthritis of the knee. J Bone Joint Surg Am 85: 78-85.
    • (2003) J Bone Joint Surg Am , vol.85 , pp. 78-85
    • Koshino, T.1    Murase, T.2    Saito, T.3
  • 33
    • 9744273970 scopus 로고    scopus 로고
    • Fifteen to twenty-eight years' follow-up results of high tibial valgus osteotomy for osteoarthritic knee
    • Koshino T, Yoshida T, Ara Y, Saito I, Saito T (2004) Fifteen to twenty-eight years' follow-up results of high tibial valgus osteotomy for osteoarthritic knee. Knee 11: 439-444.
    • (2004) Knee , vol.11 , pp. 439-444
    • Koshino, T.1    Yoshida, T.2    Ara, Y.3    Saito, I.4    Saito, T.5
  • 35
    • 3142639944 scopus 로고
    • Laxité antérieure et arthrose interne du genou. Résultats de la reconstruction du ligament croisé antérieure associé à une osteotomie tibiale
    • Lerat J, Doyen B, Garin C, Mandrino A, Besse JL, Brunet-Guedj E (1993) Laxité antérieure et arthrose interne du genou. Résultats de la reconstruction du ligament croisé antérieure associé à une osteotomie tibiale. Rev Chir Orthop 79: 365-374.
    • (1993) Rev Chir Orthop , vol.79 , pp. 365-374
    • Lerat, J.1    Doyen, B.2    Garin, C.3    Mandrino, A.4    Besse, J.L.5    Brunet-Guedj, E.6
  • 36
    • 0348226280 scopus 로고    scopus 로고
    • Influence of anthropometric and mechanical variations on functional instability in the ACL deficient knee
    • Liu W, Maitland ME (2003) Influence of anthropometric and mechanical variations on functional instability in the ACL deficient knee. Ann Biomed Eng 31: 1153-1161.
    • (2003) Ann Biomed Eng , vol.31 , pp. 1153-1161
    • Liu, W.1    Maitland, M.E.2
  • 37
    • 0001352487 scopus 로고
    • Upper tibial osteotomy for gonarthrosis in genu varum. Apropos of a series of 193 cases reviewed 6 to 10 years later
    • Lootvoet L, Massinon A, Rossillon R, Himmer O, Lambert K, Ghosez JP (1993) Upper tibial osteotomy for gonarthrosis in genu varum. Apropos of a series of 193 cases reviewed 6 to 10 years later. Rev Chir Orthop 79: 375-384.
    • (1993) Rev Chir Orthop , vol.79 , pp. 375-384
    • Lootvoet, L.1    Massinon, A.2    Rossillon, R.3    Himmer, O.4    Lambert, K.5    Ghosez, J.P.6
  • 38
    • 2142659315 scopus 로고    scopus 로고
    • Accuracy of frontal and sagittal plane correction in open-wedge high tibial osteotomy
    • Marti C, Gautier E, Wachtl SW, Jakob R (2004) Accuracy of frontal and sagittal plane correction in open-wedge high tibial osteotomy. Arthroscopy 20: 366-372.
    • (2004) Arthroscopy , vol.20 , pp. 366-372
    • Marti, C.1    Gautier, E.2    Wachtl, S.W.3    Jakob, R.4
  • 39
    • 0023902624 scopus 로고
    • Proximal tibial osteotomy. Factors that influence the duration of satisfactory function
    • Matthews LS, Goldstein SA, Malvitz TA, Katz BP, Kaufer H (1988) Proximal tibial osteotomy. Factors that influence the duration of satisfactory function. Clin Orthop 229: 193-200.
    • (1988) Clin Orthop , vol.229 , pp. 193-200
    • Matthews, L.S.1    Goldstein, S.A.2    Malvitz, T.A.3    Katz, B.P.4    Kaufer, H.5
  • 40
    • 33750591193 scopus 로고    scopus 로고
    • High tibial osteotomy: does navigation improve result?
    • Maurer F, Wassmer G (2006) High tibial osteotomy: does navigation improve result? Orthopedics 29: S130-S132.
    • (2006) Orthopedics , vol.29
    • Maurer, F.1    Wassmer, G.2
  • 41
    • 1442303842 scopus 로고    scopus 로고
    • Moglichkeiten der computergestutzen navigation bei kniegelenknahen osteotomien
    • Menetry J, Paul M (2004) Moglichkeiten der computergestutzen navigation bei kniegelenknahen osteotomien. Orthopade 33: 224-228.
    • (2004) Orthopade , vol.33 , pp. 224-228
    • Menetry, J.1    Paul, M.2
  • 42
    • 41949124289 scopus 로고    scopus 로고
    • Opening wedge high tibial osteotomy: a novel technique for harvesting autograft bone
    • Moyad TF et al (2008) Opening wedge high tibial osteotomy: a novel technique for harvesting autograft bone. J Knee Surg 21: 80-84.
    • (2008) J Knee Surg , vol.21 , pp. 80-84
    • Moyad, T.F.1
  • 43
    • 0033212289 scopus 로고    scopus 로고
    • The Install Award. Survivorship of the high tibial valgus osteotomy. A 10- to 22-year follow-up study
    • Naudie D, Bourne RB, Rorabeck CH, Bourne TJ (1999) The Install Award. Survivorship of the high tibial valgus osteotomy. A 10- to 22-year follow-up study. Clin Orthop Relat Res 367: 18-27.
    • (1999) Clin Orthop Relat Res , vol.367 , pp. 18-27
    • Naudie, D.1    Bourne, R.B.2    Rorabeck, C.H.3    Bourne, T.J.4
  • 44
    • 13944249834 scopus 로고    scopus 로고
    • Opening wedge tibial osteotomy: The 3-triangle method to correct axial alignment and tibial slope
    • Noyes FR, Goebel SX, West J (2005) Opening wedge tibial osteotomy: The 3-triangle method to correct axial alignment and tibial slope. Am J Sports Med 33: 378-387.
    • (2005) Am J Sports Med , vol.33 , pp. 378-387
    • Noyes, F.R.1    Goebel, S.X.2    West, J.3
  • 47
    • 33747209688 scopus 로고    scopus 로고
    • Medial opening wedge tibial osteotomy and the sagittal plane: the effect of increasing tibial slope on tibio-femoral contact pressure
    • Rodner C, Adams DJ, Diaz-Doran V, Tate JP, Santangelo SA, Mazzocca AD, Arciero RA (2006) Medial opening wedge tibial osteotomy and the sagittal plane: the effect of increasing tibial slope on tibio-femoral contact pressure. Am J Sports Med 34: 1431-1441.
    • (2006) Am J Sports Med , vol.34 , pp. 1431-1441
    • Rodner, C.1    Adams, D.J.2    Diaz-Doran, V.3    Tate, J.P.4    Santangelo, S.A.5    Mazzocca, A.D.6    Arciero, R.A.7
  • 48
    • 27744528710 scopus 로고    scopus 로고
    • Navigated osteotomies around the knee in 170 patients with osteoarthritis secondary to genu varum
    • Saragaglia D, Roberts J (2005) Navigated osteotomies around the knee in 170 patients with osteoarthritis secondary to genu varum. Orthopedics 28: s1269-s1274.
    • (2005) Orthopedics , vol.28
    • Saragaglia, D.1    Roberts, J.2
  • 49
    • 78650763536 scopus 로고    scopus 로고
    • High tibial valgus osteotomy in unicompartmental medial osteoarthritis of the knee: a retrospective follow-up study over 13-21 years
    • Schallberger A, Jacobi M, Wahl P, Jakob RP (2011) High tibial valgus osteotomy in unicompartmental medial osteoarthritis of the knee: a retrospective follow-up study over 13-21 years. Knee Surg Sport Traumatol Arthrosc 19: 122-127.
    • (2011) Knee Surg Sport Traumatol Arthrosc , vol.19 , pp. 122-127
    • Schallberger, A.1    Jacobi, M.2    Wahl, P.3    Jakob, R.P.4
  • 50
    • 0034933989 scopus 로고    scopus 로고
    • The role of knee alignment in disease progression and functional decline in knee osteoarthritis
    • Sharma L, Song J, Felson DT, Cahue S, Shamiyeh E, Dunlop DD (2001) The role of knee alignment in disease progression and functional decline in knee osteoarthritis. JAMA 286: 188-195.
    • (2001) Jama , vol.286 , pp. 188-195
    • Sharma, L.1    Song, J.2    Felson, D.T.3    Cahue, S.4    Shamiyeh, E.5    Dunlop, D.D.6
  • 51
    • 35648963219 scopus 로고    scopus 로고
    • How to avoid unintended increase of posterior slope in navigation-assisted open-wedge high tibial osteotomy
    • Song EK, Seon JK, Park SJ (2007) How to avoid unintended increase of posterior slope in navigation-assisted open-wedge high tibial osteotomy. Orthopedics 30: S127-S131.
    • (2007) Orthopedics , vol.30
    • Song, E.K.1    Seon, J.K.2    Park, S.J.3
  • 52
    • 0037362912 scopus 로고    scopus 로고
    • Tibial osteotomy for the treatment of varus gonarthrosis. Survival and failure analysis to twenty-two years
    • Sprenger TR, Doerzbacher JF (2003) Tibial osteotomy for the treatment of varus gonarthrosis. Survival and failure analysis to twenty-two years. J Bone Joint Surg Am 85-A: 469-474.
    • (2003) J Bone Joint Surg Am , vol.85 A , pp. 469-474
    • Sprenger, T.R.1    Doerzbacher, J.F.2
  • 53
    • 35348825487 scopus 로고    scopus 로고
    • Computer-assisted open-wedge osteotomy
    • Wiehe R, Becker U, Bauer G (2007) Computer-assisted open-wedge osteotomy. Z Orthop Unfall 145: 441-447.
    • (2007) Z Orthop Unfall , vol.145 , pp. 441-447
    • Wiehe, R.1    Becker, U.2    Bauer, G.3
  • 54
    • 64949193363 scopus 로고    scopus 로고
    • Validation of computer-assisted open-wedge high tibial osteotomy using three-dimensional navigation
    • Yamamoto Y, Ishibashi Y, Tsuda E, Tsukada H, Kimura Y, Toh S (2008) Validation of computer-assisted open-wedge high tibial osteotomy using three-dimensional navigation. Orthopedics 31(10 Suppl 1).
    • (2008) Orthopedics , vol.31 , Issue.10 SUPPL. 1
    • Yamamoto, Y.1    Ishibashi, Y.2    Tsuda, E.3    Tsukada, H.4    Kimura, Y.5    Toh, S.6
  • 55
    • 0026784904 scopus 로고
    • A ten- to 15-year follow-up observation of high tibial osteotomy in medial compartment osteoarthrosis
    • Yasuda K, Majima T, Tsuchida T, Kaneda K (1992) A ten- to 15-year follow-up observation of high tibial osteotomy in medial compartment osteoarthrosis. Clin Orthop Relat Res 282: 186-195.
    • (1992) Clin Orthop Relat Res , vol.282 , pp. 186-195
    • Yasuda, K.1    Majima, T.2    Tsuchida, T.3    Kaneda, K.4


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