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Related Concept Videos

Knee Joint01:23

Knee Joint

3.8K
The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris...
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Related Experiment Video

Updated: Apr 17, 2026

In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty
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Patellar non-eversion in primary TKA reduces the complication rate.

Guangpu Yang1, Wenfa Huang2, Weixin Xie2

  • 1Department of Orthopaedics, Zhujiang Hospital, Southern Medical University, 253 Industrial Avenue, Haizhu, Guangzhou, 510282, Guangdong, China. yanggp522@163.com.

Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA
|February 14, 2015
PubMed
Summary
This summary is machine-generated.

Patellar non-eversion in total knee arthroplasty (TKA) reduces hospitalization and complications but increases operative time. Further research is needed to clarify its impact on knee function recovery.

Keywords:
Minimally invasive surgeryPatellar eversionPatellar non-eversionTotal knee arthroplasty

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Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering

Background:

  • Total knee arthroplasty (TKA) is a common procedure for end-stage knee osteoarthritis.
  • Patellar management during TKA, including eversion or non-eversion, can influence surgical outcomes.

Purpose of the Study:

  • To evaluate the specific benefits of patellar non-eversion in TKA.
  • To compare outcomes between patellar eversion and non-eversion techniques.

Main Methods:

  • Systematic review and meta-analysis adhering to PRISMA guidelines.
  • Searched MEDLINE/PubMed, Cochrane Library, and Embase databases (August 2014).
  • Included randomized controlled trials (RCTs) isolating patellar handling as the variable; quality assessed using CONSORT criteria.

Main Results:

  • Five RCTs involving patellar eversion vs. non-eversion were analyzed.
  • Patellar non-eversion was associated with significantly shorter tourniquet time and hospitalization length.
  • The incidence of complications was significantly higher in the patellar eversion group, while postoperative pain, alignment, and Insall-Salvati ratio showed no significant differences.

Conclusions:

  • Patellar non-eversion in TKA leads to reduced hospitalization and fewer complications, despite longer operative time.
  • The impact of patellar non-eversion on knee function recovery remains unclear.
  • Avoidance of patellar eversion is generally recommended during TKA joint exposure.