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Effects of Balance and Muscle Strength in Knee Osteoarthritis

Effects of Balance and Muscle Strength on Functional Capacity in Knee Osteoarthritis

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07066215
Enrollment
64
Registered
2025-07-15
Start date
2025-08-01
Completion date
2026-03-13
Last updated
2026-04-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Primary Knee Osteoarthritis

Brief summary

Knee osteoarthritis (OA) is a chronic and progressive joint disease characterized by the degeneration of articular cartilage, subchondral bone sclerosis, and the formation of osteophytes. This condition leads to joint pain and stiffness, negatively affecting individuals' quality of life. Joint stiffness, decreased quadriceps strength, and impaired proprioceptive sensation result in functional limitations. Due to these symptoms, individuals experience difficulties in performing daily activities such as rising from a chair, walking, and climbing stairs. The aim of this study is to evaluate the effects of balance, and muscle strength on functional capacity in patients with knee osteoarthritis.

Detailed description

In knee OA, structural changes in the cartilage and the formation of peripheral osteophytes contribute to joint stiffness and a reduction in the range of motion, which adversely affects physical function, particularly in older adults. Activities such as stair climbing, sitting and standing, and walking require the contribution of core muscles as well as lower extremity muscles, particularly the knee extensors. In knee OA, there is a reported decrease in lower extremity muscle strength, especially in the quadriceps femoris muscle, which further impairs functional activities in the advanced stages of the disease. Arthritic damage to joint mechanoreceptors in osteoarthritis leads to a decline in motor control and proprioceptive sensitivity. These sensorimotor deficits result in decreased stability and impaired balance function. Additionally, reduced muscle strength can hinder neuromuscular control, leading to postural instability and an increased risk of falls, especially in older patients. Identifying the factors that contribute to the decline in functional capacity is crucial for planning appropriate exercise programs. The aim of this study is to evaluate the effects of balance, and muscle strength on functional capacity in patients with knee osteoarthritis.

Interventions

None listed

Sponsors

Bezmialem Vakif University
Lead SponsorOTHER

Study design

Observational model
OTHER
Time perspective
CROSS_SECTIONAL

Eligibility

Sex/Gender
FEMALE
Age
45 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

* Primary knee osteoarthritis

Exclusion criteria

* Previous surgery in the lower extremity * Neuromuscular disease * Vestibular pathology * Physiotherapy intervention or intra-articular injection within the last 6 months

Design outcomes

Primary

MeasureTime frameDescription
Muscle strengthBaselineMuscles strength measurement with 5 time sit-to-stand test
BalanceBaselineBiodex Balance System will be used for postural stability evaluation. Lower scores indicate better stability and higher scores mean poor balance.
6-minute walk testBaselineWalking distance will be measured
Stair climb testBaselineTest completion time will be evaluated
Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC)BaselineFunction subscale consisting of 17 items will be used for evaluation. Higher scores indicate greater functional limitation.

Countries

Turkey (Türkiye)

Contacts

PRINCIPAL_INVESTIGATORKubra Alpay, PhD

Bezmialem Vakif University

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 29, 2026