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Table 3 Cumulative results of anterior knee pain, crepitation, patellar clunk, and postoperative complications from all follow-up time points

From: Midterm functional recovery of Total knee arthroplasty patients compared between the ATTUNE knee system and the press fit condylar (PFC) SIGMA knee system

Outcome measurement

PFC Sigma

(n = 59)

ATTUNE

(n = 54)

p-value

Anterior knee pain, n (%)

1 (1.7%)

0 (0.0%)

1.000

Asymptomatic crepitation, n (%)

2 (3.4%)

4 (7.4%)

0.423

Patellar clunk, n (%)

0 (0.0%)

0 (0.0%)

N/A

Complication, n (%)

3 (5.1%)

4 (7.4%)

0.708

- Stiff knee

2 (3.4%)

4 (7.4%)

- Wound dehiscence

1 (1.7%)

0 (0.0%)

  1. Fisher’s exact test was used to compare differences between the two prosthesis designs
  2. A p-value< 0.05 indicates statistical significance
  3. Abbreviation: PFC, Press Fit Condylar; N/A, not applicable