No difference in anterior knee pain after medial unicompartmental knee arthroplasty in patients with or without patellofemoral osteoarthritis View Full Text


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Article Info

DATE

2016-01

AUTHORS

Eun-Kyoo Song, Ju-Kwon Park, Chan-Hee Park, Min-Cheol Kim, Pranav R. Agrawal, Jong Keun Seon

ABSTRACT

PURPOSE: The purpose of the present study was to compare functional outcomes of medial unicompartmental knee arthroplasty (UKA) in patients with patellofemoral osteoarthritis (PF OA) and those without PF OA and to evaluate the effect of PF OA on functional outcomes after UKA. METHODS: The outcomes of 48 knees in patients without PF OA who underwent medial UKA (non-PF OA group) were compared to the outcomes of 57 knees in patients with PF OA [Kellgren-Lawrence (K-L) grade ≤ 2] who underwent medial UKA (PF OA group) with a median follow-up of 5.4 years (range 3.1-10.2 years). Clinical outcomes including anterior knee pain, HSS scores, radiological parameters, and the progression of patellofemoral osteoarthritis were compared, and their effects on functional outcomes were evaluated at the final follow-up visits. RESULTS: At final follow-up visits, no significant inter-group difference was found in terms of anterior knee pain (1.9 vs. 1.9 in non-PF OA and PF OA groups, respectively), HSS score, or range of motion. Preoperative anterior knee pain and patellofemoral joint degeneration were found to be unrelated to poor outcome in patients that underwent medial UKA. Furthermore, no correlation was found between any functional outcome variable and chondral lesion pattern. CONCLUSIONS: The result of UKA for medial unicompartmental knee osteoarthritis was excellent regardless of PF OA (K-L grade ≤ 2). Hence, the patients with medial unicompartmental OA combined with a moderate degree of anterior knee pain or patellofemoral arthritis should be viewed as appropriate candidates for medial UKA. LEVEL OF EVIDENCE: III. More... »

PAGES

208-213

References to SciGraph publications

  • 2006-03. Bony and cartilaginous anatomy of the patellofemoral joint in KNEE SURGERY, SPORTS TRAUMATOLOGY, ARTHROSCOPY
  • 2014-08. UKA closely preserves natural knee kinematics in vitro in KNEE SURGERY, SPORTS TRAUMATOLOGY, ARTHROSCOPY
  • 2005-10. Comparing in vivo kinematics of unicondylar and bi-unicondylar knee replacements in KNEE SURGERY, SPORTS TRAUMATOLOGY, ARTHROSCOPY
  • 2013-11. Preoperative pain location is a poor predictor of outcome after Oxford unicompartmental knee arthroplasty at 1 and 5 years in KNEE SURGERY, SPORTS TRAUMATOLOGY, ARTHROSCOPY
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/s00167-014-3367-9

    DOI

    http://dx.doi.org/10.1007/s00167-014-3367-9

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1043314168

    PUBMED

    https://www.ncbi.nlm.nih.gov/pubmed/25274099


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    43 schema:description PURPOSE: The purpose of the present study was to compare functional outcomes of medial unicompartmental knee arthroplasty (UKA) in patients with patellofemoral osteoarthritis (PF OA) and those without PF OA and to evaluate the effect of PF OA on functional outcomes after UKA. METHODS: The outcomes of 48 knees in patients without PF OA who underwent medial UKA (non-PF OA group) were compared to the outcomes of 57 knees in patients with PF OA [Kellgren-Lawrence (K-L) grade ≤ 2] who underwent medial UKA (PF OA group) with a median follow-up of 5.4 years (range 3.1-10.2 years). Clinical outcomes including anterior knee pain, HSS scores, radiological parameters, and the progression of patellofemoral osteoarthritis were compared, and their effects on functional outcomes were evaluated at the final follow-up visits. RESULTS: At final follow-up visits, no significant inter-group difference was found in terms of anterior knee pain (1.9 vs. 1.9 in non-PF OA and PF OA groups, respectively), HSS score, or range of motion. Preoperative anterior knee pain and patellofemoral joint degeneration were found to be unrelated to poor outcome in patients that underwent medial UKA. Furthermore, no correlation was found between any functional outcome variable and chondral lesion pattern. CONCLUSIONS: The result of UKA for medial unicompartmental knee osteoarthritis was excellent regardless of PF OA (K-L grade ≤ 2). Hence, the patients with medial unicompartmental OA combined with a moderate degree of anterior knee pain or patellofemoral arthritis should be viewed as appropriate candidates for medial UKA. LEVEL OF EVIDENCE: III.
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