Tags

Type your tag names separated by a space and hit enter

Neck muscle strength before and after cervical laminoplasty: relation to axial symptoms.
J Spinal Disord Tech. 2010 May; 23(3):197-202.JS

Abstract

STUDY DESIGN

A prospective study to investigate serial changes in neck muscle strength before and after cervical laminoplasty.

OBJECTIVES

To examine the correlation between neck muscle strength and axial symptoms, and to clarify the risk factors for axial symptoms.

SUMMARY OF BACKGROUND DATA

Axial symptoms are common complications after posterior cervical spinal surgery. Although several technical considerations have reduced axial symptoms, the causes of axial symptoms are still largely unknown. Previous studies have indicated that neck muscle strength is reduced in patients with neck pain.

MATERIALS AND METHODS

Nineteen consecutive patients underwent cervical expansive laminoplasty for cervical spondylotic myelopathy. Age, sex, operative time, blood loss, clinical results, cervical curvature, range of motion, visual analog scale (VAS) for axial symptoms, and manual muscle strengths were examined before and after surgery. At 3 and 12 months, these factors were compared statistically between the no pain (NP) group (VAS <3) and the pain (P) group (VAS >or=3). The correlation between VAS and neck muscle strength, and the reduction in neck muscle strength in extension were analyzed statistically.

RESULTS

Six patients (31.5%) complained of axial symptoms at 3 months, and the symptoms continued in 3 patients (15.8%) at 12 months. At 3 months, cervical lordosis was 15.7 degrees in the NP group and 5.0 degrees in the P group, and neck strength in extension was 104.9% and 61.8%, respectively. At 12 months, neck strength in extension was 124.3% and 62.2%, respectively. These differences were statistically significant. The correlation between neck pain VAS and neck muscle strength, and the reduction in neck muscle strength in extension were statistically significant.

CONCLUSIONS

Neck muscle strength recovered to the preoperative value by 3 months and increased to 120% by 12 months in the NP group, whereas in the P group, neck muscle strength remained reduced by 60% and did not recover. Neck muscle strength and axial symptoms were strongly correlated.

Authors+Show Affiliations

Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan. shfuji@kuhp.kyoto-u.ac.jpNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

20072032

Citation

Fujibayashi, Shunsuke, et al. "Neck Muscle Strength Before and After Cervical Laminoplasty: Relation to Axial Symptoms." Journal of Spinal Disorders & Techniques, vol. 23, no. 3, 2010, pp. 197-202.
Fujibayashi S, Neo M, Yoshida M, et al. Neck muscle strength before and after cervical laminoplasty: relation to axial symptoms. J Spinal Disord Tech. 2010;23(3):197-202.
Fujibayashi, S., Neo, M., Yoshida, M., Miyata, M., Takemoto, M., & Nakamura, T. (2010). Neck muscle strength before and after cervical laminoplasty: relation to axial symptoms. Journal of Spinal Disorders & Techniques, 23(3), 197-202. https://doi.org/10.1097/BSD.0b013e3181a1a73e
Fujibayashi S, et al. Neck Muscle Strength Before and After Cervical Laminoplasty: Relation to Axial Symptoms. J Spinal Disord Tech. 2010;23(3):197-202. PubMed PMID: 20072032.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Neck muscle strength before and after cervical laminoplasty: relation to axial symptoms. AU - Fujibayashi,Shunsuke, AU - Neo,Masashi, AU - Yoshida,Makoto, AU - Miyata,Masahiko, AU - Takemoto,Mitsuru, AU - Nakamura,Takashi, PY - 2010/1/15/entrez PY - 2010/1/15/pubmed PY - 2010/7/27/medline SP - 197 EP - 202 JF - Journal of spinal disorders & techniques JO - J Spinal Disord Tech VL - 23 IS - 3 N2 - STUDY DESIGN: A prospective study to investigate serial changes in neck muscle strength before and after cervical laminoplasty. OBJECTIVES: To examine the correlation between neck muscle strength and axial symptoms, and to clarify the risk factors for axial symptoms. SUMMARY OF BACKGROUND DATA: Axial symptoms are common complications after posterior cervical spinal surgery. Although several technical considerations have reduced axial symptoms, the causes of axial symptoms are still largely unknown. Previous studies have indicated that neck muscle strength is reduced in patients with neck pain. MATERIALS AND METHODS: Nineteen consecutive patients underwent cervical expansive laminoplasty for cervical spondylotic myelopathy. Age, sex, operative time, blood loss, clinical results, cervical curvature, range of motion, visual analog scale (VAS) for axial symptoms, and manual muscle strengths were examined before and after surgery. At 3 and 12 months, these factors were compared statistically between the no pain (NP) group (VAS <3) and the pain (P) group (VAS >or=3). The correlation between VAS and neck muscle strength, and the reduction in neck muscle strength in extension were analyzed statistically. RESULTS: Six patients (31.5%) complained of axial symptoms at 3 months, and the symptoms continued in 3 patients (15.8%) at 12 months. At 3 months, cervical lordosis was 15.7 degrees in the NP group and 5.0 degrees in the P group, and neck strength in extension was 104.9% and 61.8%, respectively. At 12 months, neck strength in extension was 124.3% and 62.2%, respectively. These differences were statistically significant. The correlation between neck pain VAS and neck muscle strength, and the reduction in neck muscle strength in extension were statistically significant. CONCLUSIONS: Neck muscle strength recovered to the preoperative value by 3 months and increased to 120% by 12 months in the NP group, whereas in the P group, neck muscle strength remained reduced by 60% and did not recover. Neck muscle strength and axial symptoms were strongly correlated. SN - 1539-2465 UR - https://www.unboundmedicine.com/medline/citation/20072032/Neck_muscle_strength_before_and_after_cervical_laminoplasty:_relation_to_axial_symptoms_ L2 - http://dx.doi.org/10.1097/BSD.0b013e3181a1a73e DB - PRIME DP - Unbound Medicine ER -