NCT06701474

Brief Summary

The goal of this observational study is to compare the functional outcome of patients with end-stage knee osteoarthritis (OA) before and after total knee arthroplasty based on the phase angle level. The main questions it aims to answer are:

  • Do patients with low phase angle show worse functional recovery after total knee arthroplasty compared to those with high phase angle?
  • Is postoperative physical function associated with preoperative phase angle level? Researchers will compare postoperative physical function and muscle strength between the low and high phase angle groups to determine whether a low phase angle is associated with poorer functional recovery. Participants will: Perform physical function tests, isokinetic strength assessments, and bioelectrical impedance analysis before and three months after surgery.

Trial Health

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Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
200

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Sep 2024

Geographic Reach
1 country

1 active site

Status
recruiting

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

Study Start

First participant enrolled

September 13, 2024

Completed
2 months until next milestone

First Submitted

Initial submission to the registry

November 14, 2024

Completed
8 days until next milestone

First Posted

Study publicly available on registry

November 22, 2024

Completed
10 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 23, 2025

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

September 23, 2025

Completed
Last Updated

February 7, 2025

Status Verified

February 1, 2025

Enrollment Period

1 year

First QC Date

November 14, 2024

Last Update Submit

February 5, 2025

Conditions

Keywords

total knee arthroplastyphase anglesarcopeniabioelectrical impedance

Outcome Measures

Primary Outcomes (3)

  • Timed up and go test (TUG)

    Researchers ask patients to rise from a seated position, walk a distance of 3 m, turn around, return to the chair, and sit back. The average time of three trials was recorded as a result

    Baseline and 3 months after surgery

  • 10 meter walk test (10MWT)

    Patients are instructed to walk 14 m, including 2 m at both ends for acceleration and deceleration, at their comfortable speed. Gait speed was calculated by dividing the 10m distance by the time taken.

    Baseline and 3 months after surgery

  • Berg balance scale (BBS)

    Patients are asked to perform 14 tasks regarding the static and dynamic balance of patients. Each task was rated on a five-point scale from 0 to 4, with a total score of 56.

    Baseline and 3 months after surgery

Secondary Outcomes (9)

  • Isokinetic peak torque of knee flexion at 60°/s

    Baseline and 3 months after surgery

  • Isokinetic peak torque of knee flexion at 150°/s

    Baseline and 3 months after surgery

  • Isokinetic peak torque of knee extension at 60°/s

    Baseline and 3 months after surgery

  • Isokinetic peak torque of knee extension at 150°/s

    Baseline and 3 months after surgery

  • Isokinetic total work of knee flexion at 60°/s

    Baseline and 3 months after surgery

  • +4 more secondary outcomes

Study Arms (2)

high PhA

* Patients diagnosed with knee osteoarthritis and scheduled for total knee arthroplasty. * Among these, patients are classified into the high PhA group if their preoperative PhA is above 4.95 for males or 4.35 for females

low PhA

* Patients diagnosed with knee osteoarthritis and scheduled for total knee arthroplasty. * Among these, patients are classified into the low PhA group if their preoperative PhA is below 4.95 for males or 4.35 for females

Eligibility Criteria

Age55 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Single general hospital

You may qualify if:

  • Individuals aged 55 and over (based on the age on their national ID at the time of consent)
  • Individuals diagnosed with knee OA based on medical history, physical examination, and radiographic assessments.
  • Individuals who plan to perform total knee arthroplasty

You may not qualify if:

  • Individuals with gait disturbance due to neurologic disorders such as Parkinson disease, stroke and dementia
  • Individuals with severe cardiac, pulmonary, or musculoskeletal disorders that limited quadriceps strength and physical function
  • Individuals with knee osteoarthritis due to secondary causes such as rheumatic or traumatic arthritis
  • Individuals with a history of any knee surgery within one year.
  • Individuals considered clinically unsuitable for the study by the researchers or person in charge based on significant medical findings.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Yongin Severance Hospital

Yongin-si, Gyeonggi-do, 16995, South Korea

RECRUITING

Related Publications (9)

  • Uemura K, Doi T, Tsutsumimoto K, Nakakubo S, Kim MJ, Kurita S, Ishii H, Shimada H. Predictivity of bioimpedance phase angle for incident disability in older adults. J Cachexia Sarcopenia Muscle. 2020 Feb;11(1):46-54. doi: 10.1002/jcsm.12492. Epub 2019 Aug 22.

  • Martins PC, Alves Junior CAS, Silva AM, Silva DAS. Phase angle and body composition: A scoping review. Clin Nutr ESPEN. 2023 Aug;56:237-250. doi: 10.1016/j.clnesp.2023.05.015. Epub 2023 Jun 1.

  • Stapel SN, Looijaard WGPM, Dekker IM, Girbes ARJ, Weijs PJM, Oudemans-van Straaten HM. Bioelectrical impedance analysis-derived phase angle at admission as a predictor of 90-day mortality in intensive care patients. Eur J Clin Nutr. 2018 Jul;72(7):1019-1025. doi: 10.1038/s41430-018-0167-1. Epub 2018 May 11.

  • Sardinha LB, Rosa GB. Phase angle, muscle tissue, and resistance training. Rev Endocr Metab Disord. 2023 Jun;24(3):393-414. doi: 10.1007/s11154-023-09791-8. Epub 2023 Feb 10.

  • Harris IA, Harris AM, Naylor JM, Adie S, Mittal R, Dao AT. Discordance between patient and surgeon satisfaction after total joint arthroplasty. J Arthroplasty. 2013 May;28(5):722-7. doi: 10.1016/j.arth.2012.07.044. Epub 2013 Feb 23.

  • Bourne RB, Chesworth BM, Davis AM, Mahomed NN, Charron KD. Patient satisfaction after total knee arthroplasty: who is satisfied and who is not? Clin Orthop Relat Res. 2010 Jan;468(1):57-63. doi: 10.1007/s11999-009-1119-9.

  • Capin JJ, Bade MJ, Jennings JM, Snyder-Mackler L, Stevens-Lapsley JE. Total Knee Arthroplasty Assessments Should Include Strength and Performance-Based Functional Tests to Complement Range-of-Motion and Patient-Reported Outcome Measures. Phys Ther. 2022 Jun 3;102(6):pzac033. doi: 10.1093/ptj/pzac033.

  • Wieczorek M, Rotonda C, Guillemin F, Rat AC. What Have We Learned About the Course of Clinical Outcomes After Total Knee or Hip Arthroplasty? Arthritis Care Res (Hoboken). 2020 Nov;72(11):1519-1529. doi: 10.1002/acr.24045.

  • GBD 2021 Osteoarthritis Collaborators. Global, regional, and national burden of osteoarthritis, 1990-2020 and projections to 2050: a systematic analysis for the Global Burden of Disease Study 2021. Lancet Rheumatol. 2023 Aug 21;5(9):e508-e522. doi: 10.1016/S2665-9913(23)00163-7. eCollection 2023 Sep.

MeSH Terms

Conditions

Osteoarthritis, KneeSarcopenia

Condition Hierarchy (Ancestors)

OsteoarthritisArthritisJoint DiseasesMusculoskeletal DiseasesRheumatic DiseasesMuscular AtrophyNeuromuscular ManifestationsNeurologic ManifestationsNervous System DiseasesAtrophyPathological Conditions, AnatomicalPathological Conditions, Signs and SymptomsSigns and Symptoms

Central Study Contacts

Na Young Kim, MD, PhD

CONTACT

Young Seok Kim, MD

CONTACT

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

November 14, 2024

First Posted

November 22, 2024

Study Start

September 13, 2024

Primary Completion

September 23, 2025

Study Completion

September 23, 2025

Last Updated

February 7, 2025

Record last verified: 2025-02

Data Sharing

IPD Sharing
Will not share

Locations