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Related Experiment Video

Updated: May 16, 2026

Treatment with Locking Intramedullary Nailing for Intertrochanteric Fracture of the Femur Utilizing a New Awl with a Distal Positioner
04:41

Treatment with Locking Intramedullary Nailing for Intertrochanteric Fracture of the Femur Utilizing a New Awl with a Distal Positioner

Published on: June 6, 2025

No difference between double-high insert and medial-pivot insert in TKA.

Kazunari Ishida1, Tomoyuki Matsumoto, Nobuhiro Tsumura

  • 1Department of Orthopaedic Surgery, Hyogo Rehabilitation Centre Central Hospital, 1070 Akebono-cho, Nishi-ku, Kobe, 651-2181, Japan, wavedreamer17@yahoo.co.jp.

Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA
|December 11, 2012
PubMed
Summary

Related Concept Videos

Knee Joint01:23

Knee Joint

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 group...

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This study compared total knee arthroplasty (TKA) using double-high (DH) versus medial-pivot (MP) inserts. Midterm results showed comparable clinical outcomes and function for both TKA insert types.

Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering
  • Knee Arthroplasty Research

Background:

  • Total knee arthroplasty (TKA) aims to restore function and alleviate pain in patients with knee osteoarthritis.
  • Implant design, specifically the insert type, can influence clinical outcomes after TKA.
  • Understanding the comparative efficacy of different TKA insert designs is crucial for optimizing patient results.

Purpose of the Study:

  • To compare the midterm clinical outcomes of ADVANCE total knee arthroplasty (TKA) utilizing a double-high (DH) insert versus a medial-pivot (MP) insert.
  • To evaluate functional scores, range of motion, and activity levels between the two TKA insert designs.

Main Methods:

  • A randomized study involving 40 ADVANCE TKAs, divided into two groups, each receiving either DH or MP inserts.

Related Experiment Videos

Last Updated: May 16, 2026

Treatment with Locking Intramedullary Nailing for Intertrochanteric Fracture of the Femur Utilizing a New Awl with a Distal Positioner
04:41

Treatment with Locking Intramedullary Nailing for Intertrochanteric Fracture of the Femur Utilizing a New Awl with a Distal Positioner

Published on: June 6, 2025

  • Midterm follow-up (4-5 years) included assessments of Knee Society Scores (KSS), Knee Society Functional Scores (KSFS), range of motion (ROM), and UCLA activity scores.
  • Therapeutic study design, Level II evidence.

    • Main Results:

    • Comparable midterm clinical results, including KSS and ROM, were observed between the DH and MP insert groups.
    • Both KSFS and UCLA activity scores demonstrated equally good performance in both groups.
    • No significant improvement in ROM was achieved by using the DH insert compared to the MP insert.

    Conclusions:

    • The ADVANCE TKA with either DH or MP inserts yields equally good clinical results at midterm follow-up.
    • The choice of insert alone may not be sufficient to achieve superior clinical outcomes, including enhanced ROM or activity levels.
    • Further research may explore combined factors influencing TKA success beyond insert type.