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Effect of Forward Head Posture on Knee Joint Proprioception

Effect of Forward Head Posture on Knee Joint Proprioception and Postural Balance in Adults

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07439588
Enrollment
70
Registered
2026-02-27
Start date
2025-11-02
Completion date
2026-02-15
Last updated
2026-02-27

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

Conditions

FORWARD HEAD POSTURE

Keywords

FORWARD HEAD POSTURE, Knee Proprioception, Postural Balance

Brief summary

The aim of the study is to investigate the effect of forward head posture on knee joint proprioception and to investigate the effect of forward head posture on balance.

Detailed description

Forward head posture (FHP) represents a prevalent sagittal plane deviation characterized by the anterior displacement of the head relative to the shoulder. While its impact on cervical proprioception and upper-body neuromuscular control is well-documented, current literature reveals significant gaps regarding its influence on distal joint function. This study aims to investigate the musculoskeletal system as a holistic kinetic chain, wherein cervical misalignment may necessitate compensatory adaptations throughout the body to maintain the center of gravity. Research indicates that FHP is frequently associated with an anterior pelvic tilt and altered ankle joint position errors, suggesting that postural deviations in the neck can diminish neuromuscular performance in the lower extremities. Given this interconnected nature, it is hypothesized that FHP similarly affects knee joint proprioception and stability. By evaluating these distal effects, this investigation seeks to clarify whether cervical postural deviations contribute to balance impairments or knee instability. The findings may have significant implications for clinical practice, potentially shifting rehabilitation paradigms to include cervical assessment and correction when treating patients with lower-limb injuries or chronic knee instability.

Interventions

Isokinetic dynamometry is considered a valid and reliable method for assessing knee proprioception, particularly joint position sense (JPS).

Sponsors

Cairo University
Lead SponsorOTHER

Study design

Observational model
CASE_CONTROL
Time perspective
CROSS_SECTIONAL

Eligibility

Sex/Gender
ALL
Age
18 Years to 35 Years

Inclusion criteria

1. Ages range from 18-35years old 2. Participants are categorized as having FHP, the craniovertebral angle (CVA) measurement is used, FHP was classified as having a CVA \< 53°; thus, participants were in the FHP group when CVA was \<53°. Conversely, the control group was defined as having normal or no FHP when a participant's CVA was \>53°.

Exclusion criteria

* Subjects will be excluded if they have: 1. Fractures 2. Neck pain 3. Deformity of the spine or extremities 4. A history of significant knee injury requiring medical treatment in the past 12 months 5. Any inflammatory joint disease 6. Primary Musculo-skeletal surgical interventions

Design outcomes

Primary

MeasureTime frameDescription
Knee ProprioceptiononceProprioception evaluation will be started by using the isokinetic system in measurement of JPS by active joint reproduction test.
Postural BalanceonceThe Biodex Balance System (BBS) is a widely recognized and reliable tool for assessing postural stability and balance control in both clinical and research settings.

Secondary

MeasureTime frameDescription
Craniovertebral Angle (CVA)oncethe angle of intersection between a horizontal line and a line bisecting the tragus of the ear and the C7 spinous process.

Countries

Egypt

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 28, 2026