Evidence map›Paper›PMID 31021883›Full record

ArticleJournal of the Chinese Medical Association : JCMA2019

Analysis of learning curve of minimally invasive total knee arthroplasty: A single surgeon's experience with 4017 cases over a 9-year period.

Yu-Chi Cheng, Po-Kuei Wu, Cheng-Fong Chen, Chao-Ming Chen, Shang-Wen Tsai, Ming-Chau Chang, Wei-Ming Chen

Abstract read
In one paragraph

Article in Journal of the Chinese Medical Association : JCMA, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Trial
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors.

Yu-Chi ChengDepartment of Radiology, Taichung Veterans General Hospital, Taichung, Taiwan, ROC.
Po-Kuei WuOrthopaedic Department School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC.
Cheng-Fong ChenOrthopaedic Department School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC.
Chao-Ming ChenDepartment of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.
Shang-Wen TsaiDepartment of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.
Ming-Chau ChangOrthopaedic Department School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC.
Wei-Ming ChenOrthopaedic Department School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo evaluate a single surgeon's experience with minimally invasive total knee arthroplasty (MIS-TKA) and report the 9-year learning curve and trends in clinical outcomes based on assessment of surgical skills, radiographic alignments, and patient's function scores.

methodsThis retrospective study included a total of 4107 knees from 3403 patients undergoing bilateral or unilateral MIS-TKA between March 2004 and February 2013. MIS-TKA was performed through a modified mini-midvastus approach. Postsurgical care regime was standardized for all patients. Data of consecutive 3-month intervals were collected and compared for changes of trends in outcomes over time, including tourniquet time, intraoperative complications, radiographic alignment, the Knee Society Score (KSS), and functional scores.

resultsSignificant increase in the number of cases undergoing MIS-TKA per 3-month interval over the study period was observed. As surgeon's experience increased over time, tourniquet time was decreased from an average of 70 minutes to approximately 35 minutes. A total of 65 (1.68%) intraoperative complications were recorded and the frequencies were in a significant decreasing trend. The rate of malalignment was in a decreasing trend and steady desired alignment (6°) was achieved at the 15th three-month interval. KSS and function scores increased from 87.4 to 91.5 and 92.6 to 96.8, respectively.

conclusionAlthough a surgeon may become competent with MIS-TKA and achieved the preliminary learning curve within one year, experience accumulation continuously improved technical proficiency in MIS-TKA. This study confirmed significant improvements in surgical skills, postoperative alignment, and patients' function over time.

Indexed as

Learning CurveAgedAged, 80 and overArthroplasty, Replacement, KneeClinical CompetenceFemaleHumansMaleMiddle AgedMinimally Invasive Surgical ProceduresRetrospective Studies

Identifiers

PMID31021883
PMCPMC13048205

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.