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Related Experiment Video

Updated: Jun 20, 2026

Using a Knee Arthrometer to Evaluate Tissue-specific Contributions to Knee Flexion Contracture in the Rat
04:59

Using a Knee Arthrometer to Evaluate Tissue-specific Contributions to Knee Flexion Contracture in the Rat

Published on: November 9, 2018

Stiffness associated with total knee arthroplasty.

Richard D Scott1

  • 1Harvard Medical School, 125 Parker Hill, Boston, MA 02120, USA.

Orthopedics
|September 16, 2009
PubMed
Summary
This summary is machine-generated.

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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Stiffness after total knee arthroplasty (TKA) can result from various factors, including patient-specific issues and surgical techniques. Intraoperative flexion is a key predictor of postoperative range of motion (ROM) potential.

Area of Science:

  • Orthopedics
  • Surgical Innovation
  • Biomedical Engineering

Background:

  • Knee stiffness is a common complication following total knee arthroplasty (TKA).
  • Numerous factors contribute to postoperative stiffness, impacting patient recovery and satisfaction.
  • Pre-existing conditions like hip arthritis can further complicate knee arthroplasty outcomes.

Purpose of the Study:

  • To identify and analyze the multifactorial causes of stiffness after total knee arthroplasty (TKA).
  • To evaluate surgical techniques and patient-related factors influencing range of motion (ROM) post-TKA.
  • To establish predictive indicators for successful ROM outcomes after TKA.

Main Methods:

  • Review of patient diagnosis, preoperative ROM, prosthetic factors, and surgical techniques.

Related Experiment Videos

Last Updated: Jun 20, 2026

Using a Knee Arthrometer to Evaluate Tissue-specific Contributions to Knee Flexion Contracture in the Rat
04:59

Using a Knee Arthrometer to Evaluate Tissue-specific Contributions to Knee Flexion Contracture in the Rat

Published on: November 9, 2018

  • Assessment of intraoperative ROM after capsular closure and postoperative rehabilitation protocols.
  • Evaluation of surgical approaches for ankylosed knees, including proximal release and tibial tubercle osteotomy.

    • Main Results:

    • Multiple factors, including patient diagnosis, preoperative ROM, surgical technique, and rehabilitation, influence TKA stiffness.
    • Intraoperative flexion against gravity with a closed capsule is the most reliable indicator of a patient's ROM potential.
    • Concurrent hip arthritis can negatively affect knee arthroplasty recovery.

    Conclusions:

    • Addressing multifactorial causes is crucial for preventing and managing TKA stiffness.
    • Optimizing intraoperative flexion is key to achieving satisfactory postoperative ROM.
    • Careful surgical technique, especially in challenging cases like ankylosed knees, is essential to avoid complications such as patellar tendon avulsion.