Axis (C2) vs Humerus
| Properti | Axis (C2) | Humerus |
|---|---|---|
| Nama Latin | Axis | Os humeri |
| Tipe | Bone | Bone |
| Sistem Tubuh | Skeletal | Skeletal |
| Wilayah Tubuh | Spine | Upper Arm |
| Fungsi | The second cervical vertebra that provides a pivot point for rotation of the head. The dens (odontoid process) projects superiorly and acts as the axis around which the atlas rotates. | The bone of the upper arm connecting the shoulder to the elbow. Provides attachment points for muscles of the shoulder and arm, enabling a wide range of upper limb movements. |
| Signifikansi Klinis | Odontoid fractures are common cervical spine injuries, especially in elderly patients. Hangman's fracture involves bilateral pars interarticularis fractures of C2. Atlantoaxial instability occurs in rheumatoid arthritis and Down syndrome. | Surgical neck fractures are common in elderly patients. Midshaft fractures may damage the radial nerve causing wrist drop. Supracondylar fractures are the most common elbow fractures in children. |
| FMA ID | 12520 | 13303 |
Full structure pages
Axis (C2)
Axis
The second cervical vertebra, the axis provides the pivot around which the head rotates. Its defining feature is the dens, or odontoid process, a tooth-like projection that extends superiorly from the body to articulate with …