Learning curve of acetabular cup positioning in total hip arthroplasty using a cumulative summation test for learning curve (LC-CUSUM)

Young Kyun Lee, David J. Biau, Byung Ho Yoon, Tae Young Kim, Yong Chan Ha, Kyung Hoi Koo

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

Despite advances in surgical techniques and instrumentation, optimal cup positioning in total hip arthroplasty (THA) is challenging with a limited accuracy. We evaluated whether a learning curve exists for the optimal cup positioning, using the LC-CUSUM test (Learning curve cumulative summation test). We evaluated the first 100 consecutive THA performed by two surgeons, who had a year of fellowship training in the same teaching hospital. A learning curve of cup positioning was plotted in each series using the LC-CUSUM score. There was no significant difference of numbers of outlier between two surgeons (P= 0.079). Both surgeons completed the learning curve of optimal cup positioning before 50 procedures, and maintained competence. A substantial learning period is necessary in the optimal positioning of an acetabular cup.

Original languageEnglish
Pages (from-to)586-589
Number of pages4
JournalJournal of Arthroplasty
Volume29
Issue number3
DOIs
StatePublished - Mar 2014

Keywords

  • Cup position
  • Hip
  • LC-CUSUM test
  • Learning curve
  • Total hip arthroplasty

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