Fabella Syndrome

Introduction:

It is a condition in which there is a Sesamoid Bone in the lateral gastrocnemius. It is located behind the lateral (outer) Femoral Condyle. It is a normal variant in 10-20% people without any symptoms.

Pathophysiology:

Continuous rubbing of the Sesamoid Bone over the lateral Femoral Condyle can cause pain. This is called as the Fabella Syndrome.

Clinical Features:

Pain and tenderness over posterior aspect of Knee, best examined when the leg is straight.

Investigations :

X-ray

Conservative Management:

1. Rest
2. Ice
3. Anti-inflammatory medications
4. Heel lifts (shorten gastrocnemius)

Surgical Management:

Is indicated only when the conservative therapy as failed after a 6 month trial. In this case a surgical excision is done to relieve the symptoms.