Table 2 According to Iowa knee score

From: A precise navigation device for fixation of patella fractures with modified K-wire tension band:a comparative retrospective study

Follow-up time 1 month 3 months 6 months 1 year
Function
PMTBW CMTBW PMTBW CMTBW PMTBW CMTBW PMTBW CMTBW
Iowa
knee
score
criteria
90–100 5 4 27 28 35 33 38 35
80–89 22 25 14 15 12 14 11 12
70–79 19 18 7 5 3 4 2 5
≤ 69 8 11 4 7 1 3 0 1
Test statistics − 0.316 − 0.207 − 0.911 − 1.107
P value 0.752 0.836 0.362 0.268