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Relationship between cervical lordotic angle and cervical segmental motion during craniocervical flexion test: A
Jae-Hyun Lee1, Ui-Jae Hwang2, Oh-Yun Kwon2
1Department of Physical Therapy, Graduate School, Yonsei University, Wonju, South Korea.
Medicine
|April 12, 2024
Summary
The craniocervical flexion test (CCFT) assesses deep cervical flexor muscles. This study found the cervical lordotic angle is crucial for minimizing posterior displacement during CCFT, ensuring proper motion.
Area of Science:
- Biomechanics
- Kinesiology
- Physical Therapy
Background:
- The craniocervical flexion test (CCFT) is widely used to evaluate deep cervical flexor muscle function.
- Objective measurement of cervical segmental motion during CCFT is currently lacking.
Purpose of the Study:
- To investigate cervical segmental motions during the CCFT.
- To determine the relationship between cervical segmental motion changes and the cervical lordotic angle.
Main Methods:
- A cross-sectional study involving 20 healthy participants.
- Lateral cervical radiography was used to measure the cervical lordotic angle, occipito-atlantal (OA) joint angle, atlantoaxial (AA) joint angle, and cervical spinous process posterior displacement (CSPPD) during initial (20 mm Hg) and low-stage (24 mm Hg) CCFT.
Main Results:
- Low-stage CCFT significantly increased OA joint angle, decreased AA joint angle, and increased C1-C6 CSPPD compared to the initial stage (P < .05).
- A significant positive correlation was observed between the change in C1-C6 CSPPD and the cervical lordotic angle.
Conclusions:
- The cervical lordotic angle plays a vital role in minimizing C1-C6 CSPPD during CCFT.
- Maintaining an appropriate cervical lordotic angle is important for achieving isolated craniocervical flexion (CCF) motion during the CCFT.
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