Cervical proprioception and its role in balance disorders: Implications for rehabilitation: A systematic review

INTRODUCTION

Postural control relies on the coordinated contribution of the visual, vestibular, and somatosensory systems.^[1] The cervical spine plays a significant role within this multisensory network by providing continuous afferent information regarding head orientation and movement.^[2] This input supports postural stability and facilitates coordinated eye and head movements.^[3] The upper cervical region, particularly the C0–C3 segments (with C0 referring to the occiput), contains a high density of muscle spindles and joint receptors that detect subtle changes in muscle length, tension, and joint position.^[4] These sensory signals project to the vestibular nuclei and cerebellum, where they are integrated with visual and vestibular inputs to generate appropriate postural responses [Figure 1].^[5] Altered cervical afferent input resulting from trauma, chronic neck pain, degenerative changes, whiplash-associated disorders (WAD), or sustained postural loading can disrupt the integration of visual, vestibular, and proprioceptive information.^[6] This sensory mismatch may contribute to cervicogenic dizziness (CGD), characterized by non-rotatory dizziness, unsteadiness, and impaired balance, often exacerbated by neck movement or prolonged static postures.^[7] Increasing evidence indicates that cervical proprioceptive disturbances are common in individuals with chronic neck pain and WAD, highlighting their clinical relevance.^[8] Assessment of cervical proprioception commonly includes joint position error (JPE) testing, head–neck repositioning tasks, and balance assessments performed during cervical movement or perturbation [Table 1].^[9] These assessments assist clinicians in identifying impairments in cervical sensorimotor control and in developing targeted rehabilitation programs.^[10] Physiotherapy interventions, including sensorimotor retraining, postural correction, manual therapy, vestibular–cervical integration exercises, and technology-assisted approaches such as virtual reality (VR) and biofeedback, aim to restore accurate sensory processing and improve functional stability.^[11,12] Given the increasing recognition of cervical proprioceptive dysfunction as a contributor to dizziness and balance impairments, this review aimed to examine current research on cervical proprioception, its role in CGD, and the effectiveness of physiotherapy-based interventions to inform clinical practice.^[13,14]

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Figure 1:

Integration of visual, vestibular, and cervical proprioceptive systems in postural control.

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MATERIALS AND METHODS

RESULTS

A total of 41 studies met the inclusion criteria, including 23 primary studies and 18 review-based studies. Primary studies comprised 13 RCTs (including 1 pilot and 1 factorial trial), 6 cohort or observational studies, 1 quasi-experimental study, and 3 controlled pre–post studies [Figure 2]. The review-based studies included seven systematic reviews, three systematic reviews with meta-analysis, one scoping review, three narrative reviews, one conceptual review, and three reviews with mixed or overlapping methodologies.^[15,16] Study populations included adults with chronic neck pain, WAD, cervical spondylosis, and CGD, with several studies including healthy controls.^[17-21] Across study designs, cervical proprioceptive impairment and balance deficits were consistently reported. Altered cervical proprioception, most commonly assessed using JPE, was observed in approximately 50–75% of individuals with chronic neck pain or WAD.^[22,23] The prevalence of CGD among individuals with persistent neck symptoms ranged from 20% to 58%. Compared with healthy controls, individuals with neck-related disorders demonstrated greater JPE, reduced head–neck repositioning accuracy, impaired neuromuscular coordination, and increased postural sway, with the most pronounced deficits observed in CGD and WAD. Most intervention studies evaluated active, exercise-based rehabilitation, particularly cervical sensorimotor and proprioceptive training, and typically delivered 2–3 times/week for 4–8 weeks. RCTs reported reductions in JPE of approximately 2–5° and improvements in static and dynamic balance, with the most consistent benefits observed in programs incorporating gaze stability, eye–head coordination, and vestibular–cervical integration.^[24]

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Figure 2:

PRISMA-style flow diagram of search strategy.

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Manual therapy was associated with short-term improvements in pain, cervical mobility, and dizziness, with greater benefits when combined with active exercise-based rehabilitation.^[24-26] Strengthening and postural exercise programs targeting the deep cervical flexors and scapular stabilizers improved postural control, reduced postural sway, and enhanced proprioceptive accuracy, particularly in chronic neck pain. Vestibular–cervical rehabilitation, primarily examined in CGD populations and typically delivered over approximately 6 weeks, consistently reduced dizziness severity and improved balance, with combined approaches outperforming single-modality interventions.^[25,26] Technology-assisted interventions, including VR and biofeedback, demonstrated short-term improvements in proprioceptive accuracy and head–neck control but were limited by small sample sizes and short follow-up durations.

Overall, methodological quality ranged from moderate to high. RCTs were generally well designed, although participant blinding was rarely feasible. Cohort and quasi-experimental studies demonstrated a moderate risk of bias, primarily due to small sample sizes and potential confounding, while systematic reviews were of acceptable quality, with inconsistent reporting of publication bias [Table 3a-c].

DISCUSSION

This review highlights the clinical importance of cervical proprioceptive dysfunction in balance disorders associated with neck-related conditions. The consistent association between altered cervical afferent input, dizziness, and postural instability supports the interpretation that cervical proprioception directly contributes to impaired postural control rather than being a secondary effect of neck pain.^[27-30] These findings align with sensorimotor control models emphasizing the integration of cervical, vestibular, and visual inputs. Rehabilitation approaches targeting cervical sensorimotor function appear to address mechanisms of sensory mismatch more effectively than passive interventions. Improvements in joint position sense and reductions in dizziness following structured exercise programs suggest enhanced multisensory integration, particularly in individuals with CGD.^[31-33] The greater effectiveness of multimodal and vestibular–cervical rehabilitation strategies further supports the value of integrated interventions, with combined approaches demonstrating superior balance and dizziness outcomes compared with single-modality treatments.^[34-36] Manual therapy may contribute by improving cervical mobility and reducing nociceptive input; however, its clinical benefit appears most significant when used to facilitate active rehabilitation rather than as a standalone intervention.^[37-40] The interpretation of the evidence is limited by methodological constraints, including small sample sizes, heterogeneous outcome measures, limited blinding, and short follow-up durations. Alignment with standardized diagnostic frameworks, such as the International Classification of Headache Disorders, 3^rd edition (ICHD-3), may improve diagnostic consistency and research comparability; therefore, comprehensive clinical assessment remains essential. Although technology-assisted interventions, including VR and biofeedback-based training, show promise for enhancing cervical proprioceptive rehabilitation,^[40,41] the current evidence remains preliminary, and practical barriers may limit widespread clinical implementation.

Future research should focus on RCTs that use ICHD-3– aligned diagnostic criteria, standardized outcome reporting, and follow-up periods exceeding 6 months to evaluate treatment durability. Improved reporting of effect sizes, adverse events, and implementation factors, including cost-effectiveness, would strengthen the evidence base and support translation into clinical practice.

CONCLUSION

Altered cervical proprioception is strongly associated with dizziness, postural instability, and balance impairment in individuals with neck-related disorders. Multimodal rehabilitation targeting cervical sensorimotor control, particularly when combined with vestibular and manual therapy, demonstrates moderate-certainty evidence for short-term improvements in joint position accuracy and balance. However, variability in diagnostic criteria, intervention protocols, and outcome measures, as well as limited long-term follow-up, restricts conclusions regarding treatment durability. Advancing the field will require standardized diagnostics, consistent reporting of outcomes, and more extended follow-up periods to enhance clinical applicability.