TY - JOUR
T1 - Medial Unicondylar Knee Arthroplasty Improves Patellofemoral Congruence
T2 - A Possible Mechanistic Explanation for Poor Association Between Patellofemoral Degeneration and Clinical Outcome
AU - Thein, Ran
AU - Zuiderbaan, Hendrik A.
AU - Khamaisy, Saker
AU - Nawabi, Danyal H.
AU - Poultsides, Lazaros A.
AU - Pearle, Andrew D.
N1 - Publisher Copyright:
© 2015 Elsevier Inc..
PY - 2015/11
Y1 - 2015/11
N2 - The purpose was to determine the effect of medial fixed bearing unicondylar knee arthroplasty (UKA) on postoperative patellofemoral joint (PFJ) congruence and analyze the relationship of preoperative PFJ degeneration on clinical outcome. We retrospectively reviewed 110 patients (113 knees) who underwent medial UKA. Radiographs were evaluated to ascertain PFJ degenerative changes and congruence. Clinical outcomes were assessed preoperatively and postoperatively. The postoperative absolute patellar congruence angle (10.05. ±. 10.28) was significantly improved compared with the preoperative value (14.23. ±. 11.22) (P= 0.0038). No correlation was found between preoperative PFJ congruence or degeneration severity, and WOMAC scores at two-year follow up. Pre-operative PFJ congruence and degenerative changes do not affect UKA clinical outcomes. This finding may be explained by the post-op PFJ congruence improvement.
AB - The purpose was to determine the effect of medial fixed bearing unicondylar knee arthroplasty (UKA) on postoperative patellofemoral joint (PFJ) congruence and analyze the relationship of preoperative PFJ degeneration on clinical outcome. We retrospectively reviewed 110 patients (113 knees) who underwent medial UKA. Radiographs were evaluated to ascertain PFJ degenerative changes and congruence. Clinical outcomes were assessed preoperatively and postoperatively. The postoperative absolute patellar congruence angle (10.05. ±. 10.28) was significantly improved compared with the preoperative value (14.23. ±. 11.22) (P= 0.0038). No correlation was found between preoperative PFJ congruence or degeneration severity, and WOMAC scores at two-year follow up. Pre-operative PFJ congruence and degenerative changes do not affect UKA clinical outcomes. This finding may be explained by the post-op PFJ congruence improvement.
KW - Clinical follow-up
KW - Congruence
KW - Fixed bearing
KW - Patellofemoral joint
KW - Unicondylar knee arthroplasty
UR - http://www.scopus.com/inward/record.url?scp=84948718683&partnerID=8YFLogxK
U2 - 10.1016/j.arth.2015.05.034
DO - 10.1016/j.arth.2015.05.034
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C2 - 26093484
AN - SCOPUS:84948718683
SN - 0883-5403
VL - 30
SP - 1917
EP - 1922
JO - Journal of Arthroplasty
JF - Journal of Arthroplasty
IS - 11
ER -