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Table 4 Postoperative outcome measures after TKA with – compared to without prior HTO for the 9 reviewed manuscripts.

From: Total knee arthroplasty after high tibial osteotomy. A systematic review

author, year   patients, N knee range of motion, ° HSS KSS knee KSS function WOMAC Baltimore knee score; excellent/good, %
van Raaij, 2007 [11] HTO 12 110 79 79 70 NS -
  control 12 120 82 90 80   -
Haslam, 2007 [4] HTO 40 91 a 79 - - - -
  control 44 106 a 80 - - - -
Huang, 2002 [16] HTO 15 - - 83 75 - -
  control 14 - - 85 72 - -
Karabatsos, 2002 [17] HTO 17 - - - - NS -
  control 17 - - - -   -
Meding, 2000 [18] HTO 39 113 - 89 81 - -
  control 39 118 - 90 84 - -
Haddad, 2000 [19] HTO 40 93 87 91 70 - -
  control 41 103 89 89 66 - -
Nizard, 1998 [20] HTO 50 101 79 74 b 67 - -
  control - 105 83 81 b 64 - -
Amendola, 1998 [21] HTO 39 101 c 86 - - - -
  control 39 115 c 89 - - - -
Mont, 1994 [22] HTO 73 - - - - - 47 d,e
  control I 73 - - - - - 64 d
  control II 73 - - - - - 68 e
  1. Follow-up time on a median of 5 years.
  2. HSS = Hospital for Special Surgery score (maximum 100 points)
  3. KSS = Knee Society clinical rating system score (maximum 100 points)
  4. WOMAC = Western Ontario and McMaster University Osteoarthritis Index
  5. - = not mentioned in manuscript
  6. NS = no significant difference after TKA with – compared to without prior HTO
  7. a p = 0.006, b p = 0.0001, c p < 0.005, d p < 0.01, e p < 0.001