Gerdy's tubercle is a lateral tubercle of the tibia

Tibia

The tibia , shinbone, or shankbone is the larger and stronger of the two bones in the leg below the knee in vertebrates , and connects the knee with the ankle bones....

, located where the fascia lata

Fascia lata

-Thickness:It is an investment for the whole of the thigh, but varies in thickness in different parts.Thus, it is thicker in the upper and lateral part of the thigh, where it receives a fibrous expansion from the Glutæus maximus, and where the Tensor fasciæ latæ is inserted between its layers; it...

 or iliotibial band inserts. It was named after French surgeon Pierre Nicolas Gerdy

Pierre Nicolas Gerdy

Pierre Nicolas Gerdy was a French physician who was a native of Loches. He was a professor with the Faculty of Medicine in Paris, and worked with renowned surgeons such as Jacques Lisfranc de St. Martin , Armand Velpeau and Guillaume Dupuytren...

 (1797–1856).

Gerdy's tubercle is on the outside part of the tibia bone just below the knee joint, where the iliotibial band runs down the outside part of the thigh

Thigh

In humans the thigh is the area between the pelvis and the knee. Anatomically, it is part of the lower limb.The single bone in the thigh is called the femur...

.

It can be fractured along with the tibial tuberosity.

It has been used as a source for bone grafts.

The peroneal nerve runs near to it.