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Impaired postural stability in patients with cervical myelopathy: evaluation by computerized static stabilometry.
Spine (Phila Pa 1976). 2008 Jun 15; 33(14):E460-4.S

Abstract

STUDY DESIGN

A prospective clinical study.

OBJECTIVE

To quantitatively evaluate impairment of postural stability in patients with cervical myelopathy.

SUMMARY OF BACKGROUND DATA

Proprioceptive sensation plays an important role in coordinated movement of the lower extremities and postural stability. Nevertheless, although disturbance of proprioceptive information will have an influence on the maintenance of postural stability, there have been few studies dealing with deterioration of postural stability in patients with cervical myelopathy.

METHODS

We investigated 52 cervical myelopathy patients who could stand without support and compared the results with those of 29 age-matched healthy volunteers. Postural stability was examined using a stabilometer. In the stabilometer, sway of gravity center was measured at upright position with eyes closed for 30 seconds. We used 2 parameters for evaluation: environmental area (EA), which measures degree of sway of the gravity center, and locus length per environmental area (L/EA), which measures fine control of standing posture by proprioceptive reflexes.

RESULTS

The mean EA of the patient group was 13.9, whereas that of the control group was 2.74, revealing significantly larger postural instability in the patient group compared to the control group. The L/EA of the patient group was significantly worse than the control group. It was also shown that postural instability was significantly larger in the myelopathy patients with the severe clinical symptoms.

CONCLUSION

The results of the present study demonstrate impairment of postural stability in patients with cervical myelopathy. The stabilometer can objectively evaluate the postural stability, which may reflect the function of the dorsal columns and the corticospinal tracts. Thus, stabilometry is a useful method for measuring a part of proprioceptive function and for objective assessment of the lower limb function of cervical myelopathy.

Links

Publisher Full Text (DOI)

Authors+Show Affiliations

Yoshikawa M
Department of Orthopaedic Surgery, Kobe Century Memorial Hospital, Kobe, Japan.
Doita M
No affiliation info available
Okamoto K
No affiliation info available
Manabe M
No affiliation info available
Sha N
No affiliation info available
Kurosaka M
No affiliation info available

MeSH

AdultAgedAged, 80 and overCase-Control StudiesCervical VertebraeFemaleHumansMaleMiddle AgedPostural BalanceProprioceptionProspective StudiesSeverity of Illness IndexSpinal Cord Diseases

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18552660

Clinical Trial Links

Gait in Adult Patients With Cervical Spondylotic Myelopathy

Citation

Yoshikawa, Masaho, et al. "Impaired Postural Stability in Patients With Cervical Myelopathy: Evaluation By Computerized Static Stabilometry." Spine, vol. 33, no. 14, 2008, pp. E460-4.
Yoshikawa M, Doita M, Okamoto K, et al. Impaired postural stability in patients with cervical myelopathy: evaluation by computerized static stabilometry. Spine (Phila Pa 1976). 2008;33(14):E460-4.
Yoshikawa, M., Doita, M., Okamoto, K., Manabe, M., Sha, N., & Kurosaka, M. (2008). Impaired postural stability in patients with cervical myelopathy: evaluation by computerized static stabilometry. Spine, 33(14), E460-4. https://doi.org/10.1097/BRS.0b013e318178e666
Yoshikawa M, et al. Impaired Postural Stability in Patients With Cervical Myelopathy: Evaluation By Computerized Static Stabilometry. Spine (Phila Pa 1976). 2008 Jun 15;33(14):E460-4. PubMed PMID: 18552660.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Impaired postural stability in patients with cervical myelopathy: evaluation by computerized static stabilometry. AU - Yoshikawa,Masaho, AU - Doita,Minoru, AU - Okamoto,Koji, AU - Manabe,Michihiko, AU - Sha,Norihide, AU - Kurosaka,Masahiro, PY - 2008/6/17/pubmed PY - 2008/9/4/medline PY - 2008/6/17/entrez SP - E460 EP - 4 JF - Spine JO - Spine (Phila Pa 1976) VL - 33 IS - 14 N2 - STUDY DESIGN: A prospective clinical study. OBJECTIVE: To quantitatively evaluate impairment of postural stability in patients with cervical myelopathy. SUMMARY OF BACKGROUND DATA: Proprioceptive sensation plays an important role in coordinated movement of the lower extremities and postural stability. Nevertheless, although disturbance of proprioceptive information will have an influence on the maintenance of postural stability, there have been few studies dealing with deterioration of postural stability in patients with cervical myelopathy. METHODS: We investigated 52 cervical myelopathy patients who could stand without support and compared the results with those of 29 age-matched healthy volunteers. Postural stability was examined using a stabilometer. In the stabilometer, sway of gravity center was measured at upright position with eyes closed for 30 seconds. We used 2 parameters for evaluation: environmental area (EA), which measures degree of sway of the gravity center, and locus length per environmental area (L/EA), which measures fine control of standing posture by proprioceptive reflexes. RESULTS: The mean EA of the patient group was 13.9, whereas that of the control group was 2.74, revealing significantly larger postural instability in the patient group compared to the control group. The L/EA of the patient group was significantly worse than the control group. It was also shown that postural instability was significantly larger in the myelopathy patients with the severe clinical symptoms. CONCLUSION: The results of the present study demonstrate impairment of postural stability in patients with cervical myelopathy. The stabilometer can objectively evaluate the postural stability, which may reflect the function of the dorsal columns and the corticospinal tracts. Thus, stabilometry is a useful method for measuring a part of proprioceptive function and for objective assessment of the lower limb function of cervical myelopathy. SN - 1528-1159 UR - https://www.unboundmedicine.com/medline/citation/18552660/Impaired_postural_stability_in_patients_with_cervical_myelopathy:_evaluation_by_computerized_static_stabilometry_ DB - PRIME DP - Unbound Medicine ER -