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Table 10 Time betwen UKA and TKA for patients undergoing conversion

From: Unicompartmental knee arthroplasty: A PearlDiver study evaluating complications rates, opioid use and utilization in the Medicare population

 

Number of UKA patients

UKA patients converted to TKA

Average time between UKA and TKA

#

%

p

RR

95% CI

Days

Δ

95% CI

Total

20,592

447

2.17%

-

-

-

987.378 (SD 764.815)

-

-

Age at UKA

  < 70

8,018

223

2.78%

-

-

-

988.852 (SD 781.501)

-

-

 70–79

9,433

168

1.78%

 < 0.0001

0.6404

(0.5253, 0.7806)

980.262 (SD 729.328)

8.590

(-13.921, 31.101)

  > 80

3,191

43

1.35%

 < 0.0001

0.4845

(0.3505, 0.6698)

806.558 (SD 768.786)

182.294

(151.274, 213.314)

Gender

 Female

10,543

264

2.50%

-

-

-

971.417 (SD 746.139)

-

-

 Male

9,933

169

1.70%

 < 0.0001

0.6795

(0.5613, 0.8226)

965.391 (SD 785.201)

6.026

(-14.9808, 27.0328)