Related Experiment Video

Updated: May 1, 2026

Using Q Suture to Enhance Resistance to Gap Formation and Tensile Strength of Repaired Flexor Tendons
10:32

Using Q Suture to Enhance Resistance to Gap Formation and Tensile Strength of Repaired Flexor Tendons

Published on: June 3, 2020

5.6K

The preoperative flexion tear gap affects postoperative meniscus stability after pullout repair for medial meniscus

Masanori Tamura1, Takayuki Furumatsu2,3, Takahiro Kitayama4

  • 1Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, 700-8558, Japan.

Knee Surgery & Related Research
|April 4, 2025
PubMed
Abstract

Insights

Preoperative flexion tear gap (FTG) on MRI impacts meniscus stability after medial meniscus posterior root (MMPR) repair. Early MMPR tear treatment is crucial for better healing and stability.

Area of Science:

  • Orthopedic surgery
  • Radiology
  • Sports medicine

Background:

  • Medial meniscus posterior root (MMPR) tears can compromise knee joint stability.
  • Assessing meniscus stability preoperatively is crucial for surgical planning and predicting outcomes.
  • Open magnetic resonance imaging (MRI) at 90° knee flexion may provide insights into tear characteristics.

Purpose of the Study:

  • To determine if preoperative flexion tear gap (FTG) on MRI influences meniscus stability after MMPR repair.
  • To evaluate time-correlated MRI findings in relation to MMPR tear occurrence and healing.
  • To identify predictors of good meniscus healing and stability post-MMPR repair.

Main Methods:

  • Retrospective observational study of 54 patients undergoing pullout repair for radial degenerative MMPR tears.
  • Meniscus stability assessed arthroscopically at 1 year postoperatively.
  • Preoperative MRI evaluated FTG at 90° flexion, and meniscus extrusion (MME, MMPE, MMpmE) at various flexions.

Main Results:

  • Meniscus stability was negatively correlated with preoperative FTG (r = -0.61, p < 0.01).
  • Time from injury to MRI correlated significantly with FTG.
  • An FTG cutoff of 8.7 mm predicted good postoperative stability with 67% sensitivity and 85% specificity.

Conclusions:

  • Preoperative FTG measured by open MRI at 90° flexion is linked to time from injury and impacts meniscus stability post-MMPR repair.
  • Early treatment of MMPR tears is recommended to enhance meniscus healing and stability.
  • FTG may serve as a useful imaging biomarker for predicting outcomes in MMPR repair.
Keywords:
DistanceMedial meniscusPosterior root tearPullout repairSecond-look arthroscopy

More Related Videos

In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty07:33

In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty

Published on: May 5, 2023

467
Author Spotlight: Double Posteromedial Approach for Treating Posterior Cruciate Ligament Cysts05:44

Author Spotlight: Double Posteromedial Approach for Treating Posterior Cruciate Ligament Cysts

Published on: October 20, 2023

463

Related Concept Videos

Appendicitis-II: Diagnostic Studies and Management01:29

Appendicitis-II: Diagnostic Studies and Management

Diagnosing and managing appendicitis requires a structured and comprehensive approach that spans from initial assessment to postoperative care. Here is an overview of the process:
Diagnosing Appendicitis
It requires a multifaceted approach, starting with a detailed physical examination to pinpoint the location and nature of the pain and identify any associated symptoms. Laboratory tests play a crucial role. A complete Blood Count (CBC) typically reveals leukocytosis (an increased number of...
936
Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy01:26

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy

Sigmoidoscopy and laparoscopy are distinct medical procedures that enable physicians to internally inspect different parts of the GI tract. Although they serve different purposes, each is essential for diagnosing and, in some cases, treating various medical conditions.
Sigmoidoscopy
Sigmoidoscopy is a diagnostic procedure that uses a flexible sigmoidoscope equipped with a light source and camera to examine the rectum and sigmoid colon. The procedure involves inserting the tube through the anus...
1.2K
Aneurysm III: Interprofessional Care01:26

Aneurysm III: Interprofessional Care

Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
478
Aneurysm IV: Nursing Management01:22

Aneurysm IV: Nursing Management

Vigilant monitoring for aneurysm rupture is essential for patients undergoing aortic surgery.Preoperative Nursing ManagementContinuously monitor the patient for manifestations of aneurysm rupture, such as pallor, weakness, tachycardia, hypotension, abdominal, back, groin, or periumbilical pain, changes in consciousness, and a pulsating abdominal mass. Regularly assess the patient's peripheral pulses.Instruct the patient to consume a clear liquid diet the day before surgery and administer...
621