Comparison of Clinical Results between Patellar Resurfacing and Non-resurfacing in Total Knee Arthroplasty: A Short Term Evaluation

Document Type : RESEARCH PAPER

Authors

1 Department of Orthopedic Surgery, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran

2 Department of Orthopedic Surgery, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran

3 Department of Orthopedic Surgery, Shahid Sadoughi University of Medical Sciences, Yazd, Iran

Abstract

Background: There is no difference in the functional outcomes 6 months after total knee arthroplasty (TKA) for knee
osteoarthritis between patellar resurfacing and non-resurfacing. Thus, we have performed this study to compare the
short-term clinical outcomes of TKA performed with and without the patella resurfacing.
Methods: A total of 50 patients with osteoarthritis of the knee (OAK) were randomized to receive patellar resurfacing
(n=24; resurfaced group) or to retain their native patella (n=26; non-resurfaced group) based on envelope selection
and provided informed consent. Disease specific outcomes including Knee Society Score (KSS), Knee Society
Function Score (KSKS-F), Kujala Anterior Knee Pain Scale (AKPS), Western Ontario and McMaster Universities
Arthritis Index (WOMAC), Short Form 36 (SF-36), and functional patella-related activities were measured within six
months of follow-up.
Results: There was no significant difference between the resurfaced and non-resurfaced groups in pre and postoperative
improvement of range of motion (ROM) (P=0.421), KSS (P=0.782, P=0.553), KSKS-F (P=0.241, P=0.293),
AKPS (P=0.128, P=0.443), WOMAC (P=0.700, P=0.282), and pain scores (P=0.120, P=0.508). There was no
difference in ROM between resurfaced and non-resurfaced group pre (15.24° and 15.45°) and post-operative (18.48°
and 18.74). No side effects related to patella was observed in any of the groups. Revision was required in none of
the participants.
Conclusion: The results showed no significant difference between patellar resurfacing and non-resurfacing in TKA for
all outcome measures in a short term.

Keywords

Main Subjects

References

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The Archives of Bone and Joint Surgery
Volume 6, Issue 2
March 2018
Pages 124-129

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History

  • Receive Date: 01 February 2017
  • Revise Date: 26 December 2017
  • Accept Date: 13 January 2018

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