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Table 6 Univariable analysis for the Knee Osteoarthritis Outcome Score at one-year follow-up after ACL revision with independent variables from the primary ACL reconstruction

From: Comparison of concomitant injuries and patient-reported outcome in patients that have undergone both primary and revision ACL reconstruction—a national registry study

   KOOS sport and recreation KOOS QoL KOOS4
  Univariable Univariable Univariable
Value Mean (SD)
Median n=
Beta
(95% CI)
p value Mean (SD)
Median n=
Beta (95% CI) p value Mean (SD)
Median n=
Beta (95% CI) p value
Any meniscal injury No 52.11 (30.19)
50.00 n = 256
   46.44 (25.40)
43.75 n = 256
   62.18 (21.80)
64.35 n = 256
  
Yes 51.57 (30.46)
55.00 n = 226
− 0.54 (− 5.98;4.90) 0.85 44.99 (27.04)
43.75 n = 226
− 1.44 (− 6.14; 3.25) 0.55 61.25 (23.09)
65.05 n = 226
− 0.93 (− 4.95; 3.09) 0.65
MM injury No 53.17 (29.95) 55.00 n = 367    46.32 (25.73) 43.75 n = 367    62.47 (22.05) 64.77 n = 367   
Yes 47.65 (31.11) 50.00 n = 115 − 5.52 (− 11.87; 0.83) 0.088 43.97 (27.57) 43.75 n = 115 − 2.35 (− 7.85; 3.14) 0.40 59.44 (23.40) 62.77 n = 115 − 3.03 (− 7.72; 1.67) 0.21
LM injury No 51.79 (30.46) 50.00 n = 330    46.42 (26.01) 43.75 n = 330    62.16 (22.07) 64.88 n = 330   
Yes 52.01 (30.02) 55.00 n = 152 0.22 (− 5.62; 6.06) 0.94 44.33 (26.54) 43.75 n = 152 − 2.09 (− 7.14; 2.95) 0.41 60.85 (23.12) 63.99 n = 152 − 1.31 (− 5.63; 3.00) 0.55
Meniscal Surgical treatment No 52.29 (30.49) 50.00 n = 286    46.35 (25.72) 43.75 n = 286    62.18 (22.26) 64.65 n = 286   
Yes 51.22 (30.06) 55.00 n = 196 − 1.07 (− 6.59; 4.46) 0.70 44.90 (26.85) 43.75 n = 196 − 1.45 (− 6.22; 3.32) 0.55 61.11 (22.63) 64.63 n = 196 − 1.07 (− 5.15; 3.01) 0.61
Meniscal resection No 52.20 (30.43) 50.00 n = 316    45.95 (25.88) 43.75 n = 316    62.00 (22.37) 64.46 n = 316   
Yes 51.20 (30.11) 55.00 n = 166 − 0.99 (− 6.70; 4.72) 0.73 45.41 (26.78) 43.75 n = 166 − 0.54 (− 5.47; 4.39) 0.83 61.26 (22.50) 65.05 n = 166 − 0.75 (− 4.97; 3.48) 0.73
Meniscal repair No 51.53 (30.41) 50.00 n = 444    45.89 (26.20) 43.75 n = 444    61.64 (22.42) 64.49 n = 444   
Yes 55.66 (28.97) 60.00 n = 38 4.13 (− 5.94; 14.19) 0.42 44.24 (26.09) 37.50 n = 38 − 1.65 (− 10.34; 7.05) 0.71 62.97 (22.35) 66.23 n = 38 1.33 (− 6.11; 8.78) 0.73
Cartilage injury No 51.99 (29.60) 55.00 n = 395    45.73 (25.44) 43.75 n = 395    62.07 (21.54) 64.55 n = 395   
Yes 51.26 (33.40) 50.00 n = 87 − 0.72 (− 7.78;6.33) 0.84 45.91 (29.41) 43.75 n = 87 0.18 (− 5.92; 6.27) 0.95 60.27 (26.00) 66.57 n = 87 − 1.80 (− 7.01; 3.42) 0.50
Highest grade on any cartilage injury No injury 51.99 (29.60) 55.00 n = 395    45.73 (25.44) 43.75 n = 395    62.07 (21.54) 64.55 n = 395   
ICRS 1-2 51.64 (33.91) 60.00 n = 70    46.61 (29.94) 46.88 n = 70    60.60 (26.30) 69.14 n = 70   
ICRS 3-4 49.71 (32.18) 50.00 n = 17 − 0.76 (− 6.30; 4.78) 0.79 43.01 (27.77) 37.50 n = 17 − 0.29 (− 5.08; 4.49) 0.90 58.94 (25.43) 52.72 n = 17 − 1.52 (− 5.62; 2.57) 0.47
Cartilage injury patella ICRS 0-2 51.76 (30.24) 50.00 n = 481    45.65 (26.08) 43.75 n = 481    61.67 (22.35) 64.56 n = 481   
ICRS 3-4 100.00 (.) 100.00 n = 1 48.24 (− 11.24; 107.73) 0.11 100.00 (.) 100.00 n = 1 54.35 (3.06; 105.64) 0.038 100.00 (.) 100.00 n = 1 38.33 (− 5.63; 82.29) 0.087
Cartilage injury tibial plateau ICRS 0-2 52.04 (30.23) 55.00 n = 478    45.95 (26.16) 43.75 n = 478    61.90 (22.31) 64.73 n = 478   
ICRS 3-4 30.00 (33.42) 25.00 n = 4 − 22.04 (− 51.89; 7.81) 0.15 23.44 (16.44) 28.13 n = 4 − 22.51 (− 48.27; 3.25) 0.087 43.10 (28.40) 46.39 n = 4 − 18.81 (− 40.86; 3.25) 0.094
Cartilage injury femoral condyles ICRS 0-2 51.87 (30.39) 55.00 n = 469    45.80 (26.25) 43.75 n = 469    61.79 (22.45) 64.77 n = 469   
ICRS 3− 4 51.54 (27.57)
50.00 n = 13
− 0.33 (− 17.08; 16.42) 0.97 44.23 (23.73) 37.50 n = 13 − 1.57 (− 16.04;12.90) 0.83 60.15 (20.94) 52.72 n = 13 − 1.65 (− 14.03; 10.74) 0.79
Cartilage injury trochlea ICRS 0− 2 51.86 (30.29)
52.50 n = 482
0.00 (.;.) . 45.76 (26.17 ) 43.75 n = 482 0.00 (.;.) . 61.75 (22.39) 64.63 n = 482 0.00 (.;.) .
ICRS 3-4 n = 0    n = 0    n = 0   
MCL injury No 52.12 (30.40)
55.00 n = 460
   45.95 (26.37) 43.75 n = 460    61.95 (22.48) 64.76 n = 460   
Yes 46.36 (28.04)
50.00 n = 22
− 5.76 (− 18.75;7.24) 0.38 41.76 (21.60) 40.63 n = 22 − 4.19 (− 15.42;7.04) 0.46 57.57 (20.50) 59.60 n = 22 − 4.38 (− 13.98;5.23) 0.37
LCL injury No 51.96 (30.31)
52.50 n = 478
   45.80 (26.19) 43.75 n = 478    61.83 (22.37)64.63 n = 478   
Yes 40.00 (29.72)
47.50 n = 4
− 11.96 (− 41.85;17.94) 0.43 40.63 (26.27) 43.75 n = 4 − 5.18 (− 31.02; 20.66) 0.69 51.53 (26.16) 56.89 n = 4 − 10.30 (− 32.40; 11.79) 0.36
PCL injury No 51.98 (30.15)
55.00 n = 475
   45.87 (26.05)
43.75 n = 475
   61.89 (22.20)
64.70 n = 475
  
Yes 43.57 (41.00)
45.00 n = 7
− 8.41 (− 31.08; 14.26) 0.47 38.39 (34.69)
18.75 n = 7
− 7.48 (− 27.06; 12.11) 0.45 52.34 (34.11) 48.18 n = 7 − 9.55 (− 26.30; 7.20) 0.26
PLC injury No 52.00 (30.25)
55.00 n = 480
   45.90 (26.13) 43.75 n = 480    61.87 (22.34) 64.73 n = 480   
Yes 17.50 (24.75)
17.50 n = 2
− 34.50 (− 76.60; 7.60) 0.11 12.50 (8.84)
12.50 n = 2
− 33.40 (− 69.75; 2.95) 0.072 32.90 (23.41) 32.90 n = 2 − 28.97 (− 60.07; 2.13) 0.068
  1. ACL anterior cruciate ligament, ICRS international cartilage repair score, MCL medial collateral ligament, MM medial meniscus, LCL lateral collateral ligament, LM lateral meniscus, PCL posterior cruciate ligament, PLC posterolateral corner