NCT05581563

Brief Summary

Many surgeons choose to perform total knee arthroplasty (TKA) surgery with the aid of a tourniquet. A tourniquet is a device that fits around the leg and restricts blood flow to the limb. There is a need to understand whether tourniquets are safe, and if they benefit, or harm, patients. The aim of this study was to determine the benefits and harms of tourniquet use in TKA surgery

Trial Health

35
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
100

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Oct 2022

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

October 1, 2022

Completed
9 days until next milestone

Study Start

First participant enrolled

October 10, 2022

Completed
4 days until next milestone

First Posted

Study publicly available on registry

October 14, 2022

Completed
12 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 10, 2023

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

November 10, 2023

Completed
Last Updated

October 14, 2022

Status Verified

October 1, 2022

Enrollment Period

1 year

First QC Date

October 1, 2022

Last Update Submit

October 13, 2022

Conditions

Outcome Measures

Primary Outcomes (16)

  • Visual Analogue Scale (VAS)

    Using a ruler, the score is determined by measuring the distance (mm) on the 10-cm line between the "no pain" anchor and the patient's mark, providing a range of scores from 0-100. A higher score indicates greater pain intensity. Based on the distribution of pain VAS scores in post-surgical patients, mild, moderate, or severe, the following cut points on the pain VAS have been recommended: no pain (0-4 mm), mild pain(5-44 mm), moderate pain (45-74 mm), and severe pain (75-100 mm).

    Baseline

  • Visual Analogue Scale (VAS)

    Using a ruler, the score is determined by measuring the distance (mm) on the 10-cm line between the "no pain" anchor and the patient's mark, providing a range of scores from 0-100. A higher score indicates greater pain intensity. Based on the distribution of pain VAS scores in post-surgical patients, mild, moderate, or severe, the following cut points on the pain VAS have been recommended: no pain (0-4 mm), mild pain(5-44 mm), moderate pain (45-74 mm), and severe pain (75-100 mm).

    Day 1

  • Visual Analogue Scale (VAS)

    Using a ruler, the score is determined by measuring the distance (mm) on the 10-cm line between the "no pain" anchor and the patient's mark, providing a range of scores from 0-100. A higher score indicates greater pain intensity. Based on the distribution of pain VAS scores in post-surgical patients, mild, moderate, or severe, the following cut points on the pain VAS have been recommended: no pain (0-4 mm), mild pain(5-44 mm), moderate pain (45-74 mm), and severe pain (75-100 mm).

    Day 2

  • International Knee Documentation Committee 2000

    International Knee Documentation Committee (IKDC) 2000 subjective score The score is interpreted as a measure of function such that higher scores represent higher levels of function and lower levels of symptoms. A score of 100 is interpreted to mean no limitation with activities of daily living or sports activities and the absence of symptoms.

    Baseline

  • International Knee Documentation Committee 2000

    International Knee Documentation Committee (IKDC) 2000 subjective score The score is interpreted as a measure of function such that higher scores represent higher levels of function and lower levels of symptoms. A score of 100 is interpreted to mean no limitation with activities of daily living or sports activities and the absence of symptoms.

    Month 3

  • International Knee Documentation Committee 2000

    International Knee Documentation Committee (IKDC) 2000 subjective score The score is interpreted as a measure of function such that higher scores represent higher levels of function and lower levels of symptoms. A score of 100 is interpreted to mean no limitation with activities of daily living or sports activities and the absence of symptoms.

    Month 6

  • Oxford Score (OS)

    This score is a patient reported outcome measure that consists of 12 questions about an individual's level of function, activities of daily living and how they have been affected by pain over the preceding four weeks. the scoring system from 0-4 where four is the best outcome and total scores range from 0 (poorest function) to 48 (maximal function)

    Baseline

  • Oxford Score (OS)

    This score is a patient reported outcome measure that consists of 12 questions about an individual's level of function, activities of daily living and how they have been affected by pain over the preceding four weeks. the scoring system from 0-4 where four is the best outcome and total scores range from 0 (poorest function) to 48 (maximal function)

    Month 3

  • Oxford Score (OS)

    This score is a patient reported outcome measure that consists of 12 questions about an individual's level of function, activities of daily living and how they have been affected by pain over the preceding four weeks. the scoring system from 0-4 where four is the best outcome and total scores range from 0 (poorest function) to 48 (maximal function)

    Month 6

  • Lysholm score

    The Lysholm Scale currently consists of eight items that measure: pain (25 points), instability (25 points), locking (15 points), swelling (10 points), limp (5 points), stair climbing (10 points), squatting (5 points), and need for support (5 points). Every question response has been assigned an arbitrary score on an increasing scale. The total score is the sum of each response to the eight questions and may range from 0-100. Higher scores indicate a better outcome with fewer symptoms or disabilities

    Baseline

  • Lysholm score

    The Lysholm Scale currently consists of eight items that measure: pain (25 points), instability (25 points), locking (15 points), swelling (10 points), limp (5 points), stair climbing (10 points), squatting (5 points), and need for support (5 points). Every question response has been assigned an arbitrary score on an increasing scale. The total score is the sum of each response to the eight questions and may range from 0-100. Higher scores indicate a better outcome with fewer symptoms or disabilities

    Month 3

  • Lysholm score

    The Lysholm Scale currently consists of eight items that measure: pain (25 points), instability (25 points), locking (15 points), swelling (10 points), limp (5 points), stair climbing (10 points), squatting (5 points), and need for support (5 points). Every question response has been assigned an arbitrary score on an increasing scale. The total score is the sum of each response to the eight questions and may range from 0-100. Higher scores indicate a better outcome with fewer symptoms or disabilities

    Month 6

  • perioperative blood loss

    intraoperative blood loss estimation in ml added to postoperative drainage

    Hospital admission to discharge (about 3 days)

  • quadriceps area circumference

    Measurement of thigh is usually performed 15 cm proximal to the superior pole of the patella. The thigh circumference is measured in cm with a measurement tape and compared to the normal contralateral knee to determine the amount of quadriceps atrophy present

    Baseline

  • quadriceps area circumference

    Measurement of thigh is usually performed 15 cm proximal to the superior pole of the patella. The thigh circumference is measured in cm with a measurement tape and compared to the normal contralateral knee to determine the amount of quadriceps atrophy present

    Month 3

  • quadriceps area circumference

    Measurement of thigh is usually performed 15 cm proximal to the superior pole of the patella. The thigh circumference is measured in cm with a measurement tape and compared to the normal contralateral knee to determine the amount of quadriceps atrophy present

    Month 6

Study Arms (2)

tourniquet use

ACTIVE COMPARATOR

knee replacement surgery with the aid of a tourniquet - a tight band placed around the thigh that restricts blood flow to the knee.

Procedure: total knee arthroplasty(TKA)

without tourniquet use

SHAM COMPARATOR

knee replacement surgery without the aid of a tourniquet - a tight band placed around the thigh that restricts blood flow to the knee.

Procedure: total knee arthroplasty(TKA)

Interventions

Knee replacement, also called knee arthroplasty or total knee replacement, is a surgical procedure to resurface a knee damaged by arthritis. Metal and plastic parts are used to cap the ends of the bones that form the knee joint, along with the kneecap. This surgery may be considered for someone who has severe arthritis or a severe knee injury.

tourniquet usewithout tourniquet use

Eligibility Criteria

Age50 Years - 85 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Osteoarthritis Kellgren and Lawrence score III or IV
  • Written consent
  • Total knee arthroplasty

You may not qualify if:

  • Neurological dysfunction
  • Coagulation disorder
  • Glucocorticoids, aspirin, heparin, coumadine, warfarin
  • History of pulmonary embolism

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Interventions

Arthroplasty, Replacement, Knee

Intervention Hierarchy (Ancestors)

Arthroplasty, ReplacementArthroplastyOrthopedic ProceduresSurgical Procedures, OperativePlastic Surgery ProceduresProsthesis Implantation

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, OUTCOMES ASSESSOR
Masking Details
the use of general anesthesia of all participants the outcomes assessor will not be able to have any information regarding tourniquet use
Purpose
PREVENTION
Intervention Model
PARALLEL
Model Details: Longitudinal Study Designs Cohort Study Simple randomisation with a 1:1 allocation ratio outcomes is measured after tourniquet use
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator, medical doctor, assistant professor

Study Record Dates

First Submitted

October 1, 2022

First Posted

October 14, 2022

Study Start

October 10, 2022

Primary Completion

October 10, 2023

Study Completion

November 10, 2023

Last Updated

October 14, 2022

Record last verified: 2022-10