Exclusion diseases

Exclusionary diseases: Exclusionary diseases include

Meniscus injury
Patellar Tip Syndrome
Chondromatosis
Tumors
Rheumatoid arthritis
Reactive joint inflammation
Osteochondral fractures (bone-cartilage fractures)
Ossification disorders
“Growth pain”/overload pain

Classification

X-ray stages according to Rodegerdts et al (1979):

Stage I: Slumbering stage (detection only possible in MRI)
Stage II: Significant brightening
Stage III: Demarcation of the OD district by sclerotic border zone
Stage IV: Free joint body

At the ankle joint

Osteochondrosis dissecans of the ankle joint usually affects certain areas of the talus (ankle bone). The talus is a short bone and a component of the ankle joint and the tarsal. It connects the foot to the leg and is located between the ankle fork (malleolus fork) and the heel bone (calcaneus).

On the upper side of the talus there is the trochlea tali (ankle bone roll), which is curved in the middle and has prominent lateral edges. Osteochondrosis dissecans affects these upper edges of the talus, with the inner edge being more frequently affected than the outer edge. Since the inner edge is the mainly weight-bearing part of the joint surface, this indicates that osteochondrosis dissecans at the ankle joint is load-dependent.

The most common site of osteochondrosis dissecans is the knee (about 75 percent of all cases). The weight-bearing parts of the joint surfaces are usually affected, i.e. the lateral (lateral) and medial (internal) condyles of the thigh. The bone is primarily affected by the disease, as the cartilage is supplied with nutritious synovial fluid from the joint.

The cause of the death of a bone close to the joint below the cartilage is probably a temporary circulatory disorder. The disease is often associated with a disturbance in the movement of running and jumping. This results in a short-term rotation in the knee with subsequent impact of the bones involved in the joint.

However, pathological meniscus changes (e.g. a disc meniscus) and childhood rheumatism are also discussed in relation to osteochondrosis dissecans of the knee. The disease mainly affects children, adolescents and young adults; in addition, about twice as many men as women are affected. In about 70 percent of cases, only one knee joint is affected by osteochondrosis dissecans.

The symptoms can be very different, often pain occurs when the affected knee joint is strained, but also swelling of the joint due to the formation of a joint effusion and restrictions of movement of the knee joint are described. In cases of low severity or in young, still growing people, the disease can be treated by physical rest and physiotherapeutic care. Knee arthroscopy is only necessary if there is no cure or if the disease worsens. The best and safest method of diagnosis is to perform a knee MRI ́s.