- Costotransverse joint
Costotransverse articulations Costotransverse articulation. Seen from above. Section of the costotransverse joints from the third to the ninth inclusive. Contrast the concave facets on the upper with the flattened facets on the lower transverse processes. Latin articulatio costotransversaria Gray's subject #76 300
This articulation is present in all but the eleventh and twelfth ribs. Ribs 1 to 10 have two joints in close proximity posteriorly; the costovertebral joints and the costotranseverse joints. This arrangement restrains the motion of the ribs allowing them to work in a parallel fashion during breathing. If a typical rib had only one joint posteriorly the resultant swivel action would allow a rib to be non-parallel with respect to the neighboring ribs making for a very inefficient respiratory mechanism. The ventral rami innervate the costotransverse joints. Therefore, therapeutic medial branch blocks are ineffectual.
The ligaments of the joint are:
- Articular capsule
- Costotransverse ligament
- Posterior costotransverse
- Anterior costotransverse
- Ligament of neck of rib
- Ligament of tubercle of rib
Joints and ligaments of torso (TA A03.02–04, GA 3.299) VertebralOf vertebral bodiesno ligamentsLumbosacral ThoraxRadiate ligament · Intra-articular ligamentCostotransverseno ligamentsno ligaments PelvisSyndesmoses of pelvic girdle
anat(h/c, u, t, l)/phys
noco(arth/defr/back/soft)/cong, sysi/epon, injr
proc, drug(M01C, M4)
Wikimedia Foundation. 2010.