Osteochondrosis
| Classification according to ICD-10 | |
|---|---|
| M91.- | Juvenile osteochondrosis of the hip and pelvis |
| M92.- | Other juvenile osteochondrosis |
| M93.- | Other osteochondropathies |
| M42.- | Osteochondrosis of the spine |
| ICD-10 online (WHO version 2019) | |
An osteochondrosis (of " chondrosis ") or osteochondrosis is a disorder of chondral ossification , ie the conversion of cartilage to bone as part of the normal growth process . It can therefore basically occur in two locations: in the joint and in the growth plates .
In both cases, the cartilage is not converted into bone quickly enough to allow an abnormally thick layer of cartilage to form. Since cartilage does not have its own blood vessels, but is nourished by diffusion , the deeper layers of cartilage are nourished increasingly poorly and degenerate. In the case of osteochondrosis resident in the joint, a piece of cartilage can loosen and swim freely in the joint (" joint mouse ") - this is then referred to as osteochondrosis (or osteochondritis) dissecans, or OCD for short .
Osteochondrosis also occurs in veterinary medicine (especially in large breeds of dogs and in fattening pigs ). There they mostly follow a polygenic inheritance with environmental interaction with a heritability between 0.25 and 0.45.
The osteochondrosis of the spine is classified according to Modic I-III .
Special forms of osteochondrosis are, for example:
- Osteochondrosis dissecans
- Intervertebral osteochondrosis
- Scheuermann's disease
- Perthes disease - aseptic femoral head necrosis
- Canine Elbow Dysplasia
- Short Radius / Short Ulna Syndrome
- Osteochondrosis pubica
