Balance, Fall Risk, and Gait in Women With Total Knee Arthroplasty

June 10, 2026 updated by: Nurcan Contarli, Karabuk University

Investigation of Balance, Fall Risk, Gait Performance, and Quality of Life in Postmenopausal Women Undergoing Total Knee Arthroplasty

Total knee arthroplasty (TKA) is a commonly performed surgical procedure aimed at reducing pain, restoring joint function, and improving quality of life, particularly among older women. Despite improvements in pain and functional outcomes following TKA, findings regarding balance, fall risk, and gait performance remain inconsistent. Impairments in these parameters may adversely affect daily activities, independence, and overall quality of life.

Unlike previous studies that have primarily focused on one or two outcomes, this study will comprehensively evaluate balance, fall risk, gait performance, and quality of life in postmenopausal women who have undergone TKA. The findings are expected to provide a more holistic understanding of long-term functional outcomes following TKA and contribute to the planning of rehabilitation programs. Therefore, the aim of this study is to compare balance, fall risk, gait performance, and quality of life between postmenopausal women who have undergone TKA and healthy postmenopausal women.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Total knee arthroplasty (TKA) is one of the most frequently performed surgeries aimed at reducing pain, restoring limb function and alignment, enabling normal joint movement, and increasing the level of independence in daily living activities. TKA is frequently performed in women aged 65-84 years.

In recent years, advancements in surgical techniques and prosthetic technology, along with increased surgeon experience, have broadened the range of indications for this surgery. Following TKA, balance, fall risk, and walking performance in patients can negatively impact their daily living activities and quality of life, preventing the achievement of expected rehabilitation results. While reports indicate a reduction in complaints and an increase in functional level and quality of life after TKA surgery, clear conclusions regarding patients' balance, fall risk, and walking performance have not been reached. This study differs from other studies in the literature by comprehensively evaluating the effects of TKA on critical functional parameters such as balance, fall risk, walking performance, and quality of life in postmenopausal women. While most research focuses on the effect of TDA on only one or two parameters, this study will examine four key components together, providing a more holistic assessment. Evaluating these parameters, which significantly affect the success of TDA surgery, will determine the rehabilitation process and program. Furthermore, the fact that participants scored 24 points or higher on the Mini-Mental Test will increase the reliability of the results by providing a sample capable of cognitive assessment. The aim of this study is to compare the effects of TDA surgery on balance skills, gait performance, fall risk, and quality of life in postmenopausal women who have and have not undergone the procedure.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
30

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

Postmenopausal women who have and have not undergone total knee arthroplasty.

Description

Inclusion Criteria:

  • Volunteering to participate in the study.
  • Being 60 years of age or older.
  • Having a Mini Mental Test score of 24 or higher.
  • Not having undergone previous arthroplasty surgery on the knee where surgery is planned.
  • Having experienced unilateral TDA.
  • Being a postmenopausal woman

Exclusion Criteria:

  • Individuals whose vital signs are unstable after surgery, or who develop any major complications such as deep vein thrombosis, pulmonary embolism, wound infection, or prolonged anesthesia side effects.
  • Presence of any neurological, vestibular, visual, cardiopulmonary, auditory, or cognitive deficits that may affect measurements.
  • Individuals diagnosed with diabetes.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
control group
not having undergone TKA
Other: TKA group
having undergone TKA

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Single Leg Standing Test
Time Frame: 1 day
Single Leg Standing (SLJ) Test: Balance assessment will be performed using the single leg standing (SLJ) test. In the SLJ test, participants will be asked to stand with their extremities on the side that has not undergone surgery raised. The duration of the test in this position will be recorded. If the participant completes this position for 30 seconds, the test will be recorded as successful. Sarac et al. determined the validity and reliability of the SLJ test in TDA patients as an intraclass correlation coefficient [ICC]=0.74 (0.48-0.87).
1 day
30-Second Sit-to-Stand Test
Time Frame: 1 day
For the test, the individual sits in the middle of a chair without armrests, with a seat height of 43.18 cm, with their back straight, arms crossed over their chest, and feet flat on the floor. Upon the "Start" command, they rise from the chair without pushing off with their arms, stand upright, and then sit down again. Prior to the evaluation, the individual is assessed for two sit-to-stand repetitions to ensure they have learned the procedure. The number of correct standing repetitions within 30 seconds is recorded as the test value.
1 day
Timed Up and Walk Test
Time Frame: 1 day
The individual is asked to stand up from a chair, walk 3 meters at a safe and normal pace, turn around, walk back, and sit back down in the chair. The time is recorded in seconds. The test will be initiated with the patient's feet flat on the floor and their arms resting on the armrests of the chair. Three repetitions will be performed, and the best result will be recorded.
1 day
10-Meter Walking Test
Time Frame: 1 day
The 10-meter walking test will be used to assess walking ability. In this test, the individual will be asked to walk at their normal pace in a pre-measured 10-meter area (with or without walking aids). The timer will start when the individual's foot is on the starting line and end when they cross the finish line. Two measurements will be taken, and the best value will be recorded in meters per second (m/s).
1 day
Oxford Knee Score
Time Frame: 1 day
It is a scale developed in 1998 to investigate pain and functional status in individuals with knee replacement, and its validity and reliability have been proven (47). The validity and reliability of the score in Turkish was proven by the research conducted by Tugay et al. in 2016 (48). The Oxford knee score is a score consisting of 12 questions that include the problems the individual has experienced in their knee in the last 4 weeks. The questions will be answered by individuals choosing the most appropriate situation for themselves from 5 answers related to each question. The answers given will be scored from 0-4 and the results will be totaled. The raw score is a value between 0-48.
1 day

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Karabuk University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 20, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
July 20, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
July 22, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 10, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 10, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 16, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 16, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 10, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • KBU-FTR-NC-11

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Data are available from the corresponding author on reasonable request.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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