Assessing Lower Extremity Dynamic Stability in Middle-Aged and Elderly Patients With Patellofemoral Pain Using the Y-Balance Test

NCT ID: NCT07068984

Last Updated: 2025-07-16

Basic Information

• Recruitment Status: COMPLETED
• Total Enrollment: 70 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2025-03-01
• Study Completion Date: 2025-04-10

Brief Summary

Background: Patellofemoral pain syndrome (PFPS) is a common functional disorder of knee joint. Its etiology involves biomechanical abnormalities and dynamic stability defects. Most of the existing studies focus on young people, and the biomechanical characteristics and functional compensation mechanism of middle-aged and elderly patients are still unclear. The Y-Balance test is becoming an important tool in PFPS research because of its sensitivity to assess the dynamic balance ability of lower limbs. Objective: To analyze the functional characteristics of lower limbs of PFPS patients aged 40-60 by Y-Balance test, and to explore the differences between PFPS patients and healthy people, so as to provide evidence for clinical rehabilitation. Methods: A cross-sectional observational study was conducted in 49 PFPS patients and 21 healthy controls. Y-Balance test was used to evaluate bilateral forward difference, composite score, lateral and posterior balance, symmetry ratio and bilateral difference. SPSS 25.0 was used for statistical analysis.

Conditions

Y-balance; Patellofemoral Pain Syndrome

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: CROSS_SECTIONAL

Study Groups

Twenty-one healthy controls were enrolled

2

Differences between lower limb balances were assessed by the Y-Balance test

Intervention Type: OTHER

The Y-Balance test was used to evaluate bilateral anterior difference, composite score, lateral and posterior balance, symmetry ratio and bilateral difference

A total of 49 patients with PFPS and 21 healthy controls were enrolled

No interventions assigned to this group

Interventions

Differences between lower limb balances were assessed by the Y-Balance test

The Y-Balance test was used to evaluate bilateral anterior difference, composite score, lateral and posterior balance, symmetry ratio and bilateral difference

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• Aged between 40 and 60 years
• Clinically diagnosed with patellofemoral pain (PFP) with symptoms lasting ≥3 months
• No other serious lower extremity disorders
• No neurological diseases
• No history of recent lower extremity surgery (<12 months)
• No history of major lower extremity trauma
• Control group: Age- and sex-matched healthy volunteers without knee pain or lower limb dysfunction

Exclusion Criteria

Acute inflammatory conditions Meniscus injury Knee ligament injury Intra-articular fracture Bone tumor Bone tuberculosis

Neurovascular injury including:

1. Stroke history

2. Parkinson's disease Subjective unwillingness to comply with testing Inability to complete Y-Balance Test

Serious systemic diseases affecting:

Cardiovascular system Hepatic function Renal function Hematological system

• Minimum Eligible Age: 40 Years
• Maximum Eligible Age: 60 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Peking University Third Hospital

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

Beijing

Beijing, Beijing Municipality, China

Countries

China

Other Identifiers

M2022744

Identifier Type: -

Identifier Source: org_study_id