Treatment | Aneurysmatic bone cyst


The only conservative approach to treatment is symptom-oriented pain therapy, if necessary. Which painkiller is most suitable for you depends, among other things, on previous illnesses or allergies. You should therefore discuss pain therapy with your doctor.

In the case of an aneurysmatic bone cyst, surgical treatment is more appropriate. Surgical treatment of an aneurysmatic bone cyst involves removal of the cyst filled with blood. The removal of the bone cyst is usually accompanied by a careful scraping, known as curettage in the medical jargon.

In addition, the lesion is filled with so-called spongiosa, a material that is physiologically located inside the bone. As an alternative to cancellous bone material, the cyst can also be filled with bone cement for the time being. In a second operation, the cement can be replaced at a later date by the body’s own cancellous bone, for example from the iliac crest.

A possible but rarely used therapeutic procedure is the irradiation of the cyst. Since those affected are usually very young, this approach has no significant benefit due to the high radiation exposure and is therefore only used in exceptional cases with aggressive cysts. The treatment of an aneurysmatic bone cyst is generally relatively difficult, since only a few bone cysts respond well to the therapy and a few years later there is rarely a recurrence.

Since most aneurysmatic bone cysts are also primarily idiopathic, i.e. of unknown cause, no direct causal therapy is possible. A surgical treatment of an aneurysmatic bone cyst is almost always indicated. Surgery is only not necessary if there are no complaints, no susceptibility to fracture and a spontaneous tendency to regression is evident.

Since this is almost never the case, a solely conservative treatment in the form of pain therapy and waiting to see whether the cyst recedes is not sufficient. Although surgical treatment is not always successful in the long term due to the high recurrence rate, it is the only way to combat the aneurysmatic bone cyst for the time being. As soon as an aneurysmatic bone cyst has been diagnosed as the main or secondary finding in X-rays and/or MRI, a surgical procedure can be planned individually.


The healing process of an aneurysmatic bone cyst takes varying lengths of time. It depends on the extent of the findings, the age of the affected person and whether there has already been a fracture of the bone involved, which is related to the aneurysmatic bone cyst. The duration of therapy, including the healing process, usually ranges from weeks to months.

Exact details are rather difficult to make, since, among other things, the therapy procedure is variable and patients respond differently. In addition, it must be said that even after complete healing, a recurrence of the aneurysmatic bone cyst can occur. Children in whom the aneurysmatic bone cyst has occurred before the age of 10 are particularly susceptible to local recurrence. Malignant degenerations that would require a longer healing and, above all, therapy period are relatively rare in the context of an aneurysmatic bone cyst.