Important Bony Landmarks of the Lower Limb

Fibula Landmarks: Head, Shaft, and Lateral Malleolus

The fibula is a slender bone located on the lateral side of the lower limb. Though it bears minimal weight, it plays a crucial role in stabilizing the ankle joint and serving as an attachment point for muscles.

1. Head of the Fibula

The head of the fibula is the proximal end of the bone. It articulates with the lateral condyle of the tibia to form the proximal tibiofibular joint. This region serves as an attachment site for the biceps femoris muscle and the fibular collateral ligament.

2. Shaft of the Fibula

The shaft is long and narrow, extending down the lateral aspect of the leg. It provides attachment points for several muscles, including the peroneus longus and peroneus brevis. The interosseous membrane connects it to the tibia, contributing to the structural integrity of the leg.

3. Lateral Malleolus

The lateral malleolus is the distal end of the fibula. It forms the lateral part of the ankle joint and stabilizes movements of the foot. It is clinically significant because fractures in this region can severely affect ankle stability.

Clinical Significance

• Fibular fractures, especially near the lateral malleolus, can impair ankle function.
• Proximal fibula injuries can affect the peroneal nerve, leading to foot drop.
• Muscular attachments on the fibula contribute to movement and stability in the lower limb.

Understanding these landmarks is essential for orthopedic assessments, surgical procedures, and rehabilitation strategies.