Tibia

The tibia, commonly called the shinbone, is the larger of the two lower leg bones, running from the knee joint at the top to the ankle joint at the bottom, and bearing the majority of the body's weight during standing and movement.

What your tibia (shin bone) does and where it's vulnerable to injury

Your tibia — the shin bone — forms the primary load-bearing structure of the lower leg, transmitting the forces from the knee down through the ankle and into the foot with every step. At the top, it forms the flat upper surface of the tibia that makes up the lower half of the knee joint — the tibial plateau — which bears the weight of the femur and the compressive forces of the quadriceps during movement. The tibia also anchors several key structures: the patellar tendon attaches to a bony prominence just below the knee (the tibial tuberosity), the ACL and PCL attach to the tibial plateau, and numerous lower leg muscles originate along the shaft. Tibial stress fractures develop from repetitive impact — common in runners and military recruits — and produce a localized, progressive aching pain along the inner shin that worsens with activity. Shin splints involve pain along the tibia from muscle and fascial irritation at the bone's surface — medically called medial tibial stress syndrome — and typically develop from rapid training load increases.

How Sword Health can help

Whether you're dealing with a tibial stress fracture, shin splints, or knee mechanics influenced by how your tibia is positioned and loaded, a physical therapist can assess the full picture and guide your recovery. Sword connects you with that expertise from home, so you can address what's driving the problem, not just manage the symptoms.