- Discussion:
- uncovertebral joint arthrosis involves what is known as the joints of Luschka, extending from C3 to C7;
- lateral aspect of vertebral body has superior projection (uncinate process);
- as the disks become degenerative, these projections approximate w/ body of the next highest vertebra;
- restult is degenerative joint changes called the joint of Luschka;
- Arthritic Process:
- as loss of disk space ht occurs;
- uncinate processes are pressed together, resulting in central clefts & a rounding off of the articular surface;
- osteophytes form & project into disk space or intervertebral foramina, compressing nerve
roots & producing radicular symptoms;
-
Spondylosis, manifested by uncovertebral osteophytes, will compress nerve roots
anteriorly, causing a radicular syndrome;
- Radiographs:
-
Oblique &
AP views are used to evaluate uncovertebral joints;
-
AP shows narrowing of uncovertebral joints w/ irregularity & rounding of uncinate
w/ lateral projecting osteophytes at joint margins;
-
oblique views:
- formina canal can be evaluated for encroachment by spurs;
- these spurs are not thought to encroach upon the nerve roots until they obliterate
more than 50% of the foraminal volume;
