ANATOMY: Joints of Thoracic Cage
3 ligaments associated with costotransverse joints
1. Costotransverse ligament 2. Lateral costotransverse ligament 3. Superior costotransverse ligament
2 ligaments associated with costovertebral joints
1. Intra-articular ligament 2. Radiate ligament
2 intersternal joints
1. Manubriosternal joint 2. Xiphisternal joint
1 ligament associated with sternocostal joints
1. Radiate sternocostal ligament
What type of joint is sternocostal joint (2nd rib)
2 synovial joints separated by interarticular sternocostal ligament
Sternocostal joint (1st rib)
Articulation between 1st rib and manubrium
Sternocostal joint (2nd rib)
Articulation between 2nd rib, manubrium, and body of sternum
Costochondral joint
Articulation between costal cartilage and rib
Interchondral joint
Articulation between costal cartilages of ribs 6 to 7, ribs 7 to 8, and ribs 8 to 9
Manubriosternal joint
Articulation between manubrium and body of sternum
Sternocostal joint (ribs 3-7)
Articulation between ribs 3-7 and body of sternum
Costotransverse joint
Articulation between tubercle of rib and transverse costal facet of corresponding thoracic vertebra
Xiphisternal joint
Articulation between xiphoid process and body of sternum
Interarticular sternocostal ligament
Attaches 2nd rib to fibrocartilage interposed between manubrium and body of sternum
Costotransverse ligament
Connect posterior part of neck of ribs to anterior surface of adjacent transverse process
Lateral costotransverse ligament
Connect tubercle of rib to tip of transverse process
Superior costotransverse ligament
Connects crest on neck of rib to caudal border of transverse process above
Radiate sternocostal ligament
Membranous band diverging from anterior and posterior sternal ends of costal cartilage to corresponding surfaces of sternum Stabilize in anterior/posterior direction
Radiate ligament
Passes from anterior margin of head of rib to sides of vertebral body and IVD
Intra-articular ligament
Passes from crest of head of rib to IVD - Ribs 2 through 9
Costotransverse joint are present with ribs __________________, but not present with ribs _______________.
Present with ribs 1-10 Not present with ribs 11 & 12
What type of joint is sternocostal joint (1st rib)
Primary cartilaginous joint (synchondrosis)
What type of joint is xiphisternal joint
Primary cartilaginous joint (synchondrosis) - Ossification in 5th decade of life
What type of joint is costochondral joint
Primary cartilaginous joint with no capsule or ligaments Bound by periosteum with no movement allowed
What type of joint is manubriosternal joint
Secondary cartilaginous joint (symphysis) - Early ossification
What type of joint is a costotransverse joint
Synovial joint
What type of joint is interchondral joint
Synovial joint
What type of joint is sternocostal joint (ribs 3-7)
Synovial joint
What type of joint is costovertebral joint
TYPICAL RIBS (3-9) AND RIB 2 - 2 synovial joints per rib - Crest of head attaches to IVD ATYPICAL RIBS (1, 10, 11, & 12) - 1 synovial joint per rib
Costovertebral joint
TYPICAL RIBS (3-9) AND RIB 2 - Superior facet of head of rib articulates with inferior demi-facet of superior thoracic vertebra - Inferior facet of head of rib articulates with superior demi-facet of corresponding thoracic vertebra ATYPICAL RIBS (1, 10, 11, & 12) - 1 facet of head of rib articulates with corresponding thoracic vertebra
