ANATOMY: Joints of Thoracic Cage

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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


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