Knee Surgery, Sports Traumatology, Arthroscopy

, Volume 25, Issue 12, pp 3747–3754 | Cite as

Comparison of patellofemoral outcomes after TKA using two prostheses with different patellofemoral design features

  • Dae Kyung Bae
  • Jong Hun Baek
  • Kyung Tack Yoon
  • Hyuck Sung Son
  • Sang Jun SongEmail author



The purpose of the present study was to compare the clinical and radiographic results after TKA using two prostheses with different sagittal patellofemoral design features, including outcomes related to compatibility of the patellofemoral joint.


The clinical and radiographic results of 81 patients (100 knees) who underwent TKA using the specific prosthesis (group A) were compared with those in a control group who underwent TKA using the other prosthesis (group B). The presence of anterior knee joint pain, patellar crepitation, and patellar clunk syndrome was also checked.


The function score and maximum flexion angle at the last follow-up were slightly better in group A than those in group B (92.0 ± 2.3 vs. 90.6 ± 4.2) (133.6° ± 8.4° vs. 129.6° ± 11.4°). Anterior knee pain was observed in 6 knees and patellar crepitation in four knees in group A. In group B, these symptoms were observed in 22 knees and 18 knees, respectively. There was no patellar clunk syndrome in either group. The alignment was corrected with satisfactory positioning of components. The patellar height remained unchanged after TKA in the two groups. The differences between preoperative and postoperative patellar tilt angle and patellar translation were small.


When comparing the clinical and radiographic results after TKA using two prostheses with different sagittal patellofemoral design features, TKA using the specific prosthesis provided satisfactory results with less clinical symptoms related to the patellofemoral kinematics with TKA using the other prosthesis.

Level of evidence



Knee Total knee arthroplasty Patellofemoral joint compatibility 


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Copyright information

© European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA) 2016

Authors and Affiliations

  • Dae Kyung Bae
    • 1
  • Jong Hun Baek
    • 1
  • Kyung Tack Yoon
    • 1
  • Hyuck Sung Son
    • 1
  • Sang Jun Song
    • 1
    Email author
  1. 1.Department of Orthopaedic Surgery, College of MedicineKyung Hee UniversitySeoulKorea

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