Jure Aljinović1,2, Igor Barišić3, Ana Poljičanin4,5, Sandra Kuzmičić4, Katarina Vukojević6, Dijana Gugić Bokun7, Tonko Vlak4. 1. Institute of Physical and Rehabilitation Medicine with Rheumatology, University Hospital of Split, Šoltanska 1, 21000, Split, Croatia. jure.aljinovic@mefst.hr. 2. Department of Health Studies, University of Split, Split, Croatia. jure.aljinovic@mefst.hr. 3. Clinical Department of Diagnostic and Interventional Radiology, University Hospital of Split, Split, Croatia. 4. Institute of Physical and Rehabilitation Medicine with Rheumatology, University Hospital of Split, Šoltanska 1, 21000, Split, Croatia. 5. Department of Health Studies, University of Split, Split, Croatia. 6. Department of Anatomy, Histology and Embryology, University of Split School of Medicine, Split, Croatia. 7. Clinical Department of Pathology, Forensic Medicine and Cytology, University Hospital of Split, Split, Croatia.
Abstract
BACKGROUND: Whiplash injury of the cervical spine is the most common injury after a car accident and in 25% of patients it progresses into chronic neck pain. AIM OF THE STUDY: To investigate the difference in neck muscle stiffness using shear wave ultrasound elastography between subjects who suffered an uncomplicated whiplash injury and a control group. Possible recognition of patients who insist on physical therapy in order to support their false whiplash injury claims. METHODS: This study included 75 whiplash injury patients and 75 control subjects. Trapezius, splenius capitis and sternocleidomastoid muscles were examined by ultrasound shear wave elastography. RESULTS: Increased muscle stiffness was noticed in trapezius muscle bilaterally in the whiplash group when compared to the control group (p < 0.001; right 57.47 ± 13.82 kPa vs. 87.84 ± 23.23 kPa; left 54.4 ± 12.68 kPa vs. 87.21 ± 26.47 kPa). Muscle stiffness in splenius capitis and sternocleidomastoid muscles was not suitable for analysis because of asymmetrical data distribution. Patients with less than 76 kPa of muscle stiffness in trapezius muscle are unlikely to belong in whiplash injury group (sensitivity 90% for right and 97% for left trapezius muscle, specificity 72% and 73%, respectively). CONCLUSION: Patients measuring below 76 kPa of muscle stiffness in the trapezius muscle might have no whiplash injury. Further follow-up of the patients measuring higher than cut-off value might be beneficial for detecting patients with prolonged neck muscle spasm that can lead to chronic cervical pain syndrome.
BACKGROUND:Whiplash injury of the cervical spine is the most common injury after a car accident and in 25% of patients it progresses into chronic neck pain. AIM OF THE STUDY: To investigate the difference in neck muscle stiffness using shear wave ultrasound elastography between subjects who suffered an uncomplicated whiplash injury and a control group. Possible recognition of patients who insist on physical therapy in order to support their false whiplash injury claims. METHODS: This study included 75 whiplash injurypatients and 75 control subjects. Trapezius, splenius capitis and sternocleidomastoid muscles were examined by ultrasound shear wave elastography. RESULTS: Increased muscle stiffness was noticed in trapezius muscle bilaterally in the whiplash group when compared to the control group (p < 0.001; right 57.47 ± 13.82 kPa vs. 87.84 ± 23.23 kPa; left 54.4 ± 12.68 kPa vs. 87.21 ± 26.47 kPa). Muscle stiffness in splenius capitis and sternocleidomastoid muscles was not suitable for analysis because of asymmetrical data distribution. Patients with less than 76 kPa of muscle stiffness in trapezius muscle are unlikely to belong in whiplash injury group (sensitivity 90% for right and 97% for left trapezius muscle, specificity 72% and 73%, respectively). CONCLUSION:Patients measuring below 76 kPa of muscle stiffness in the trapezius muscle might have no whiplash injury. Further follow-up of the patients measuring higher than cut-off value might be beneficial for detecting patients with prolonged neck muscle spasm that can lead to chronic cervical pain syndrome.
Authors: Joline E Brandenburg; Sarah F Eby; Pengfei Song; Heng Zhao; Jeffrey S Brault; Shigao Chen; Kai-Nan An Journal: Arch Phys Med Rehabil Date: 2014-07-24 Impact factor: 3.966
Authors: Joline E Brandenburg; Sarah F Eby; Pengfei Song; Heng Zhao; Bradford W Landry; Shirley Kingsley-Berg; William R Bamlet; Shigao Chen; Gary C Sieck; Kai-Nan An Journal: J Ultrasound Med Date: 2015-04 Impact factor: 2.153