Tibial nerve compression occurs when the tibial nerve, a significant nerve in the lower leg, is squeezed or irritated. This compression can lead to various symptoms, including pain, numbness, tingling, and weakness in the foot and leg.
Causes
Several factors can contribute to tibial nerve compression:
- Injury: Trauma, such as a sports injury or a fall, can damage the nerve or the surrounding tissues.
- Inflammation: Conditions like arthritis or tendinitis can cause swelling and inflammation that put pressure on the nerve.
- Tumors: Benign or malignant tumors can grow near the nerve and compress it.
- Popliteal artery entrapment syndrome: This condition involves the popliteal artery, which runs near the tibial nerve, becoming compressed behind the knee.
Symptoms
Common symptoms of tibial nerve compression include:
- Pain: A sharp, shooting pain in the lower leg, often behind the knee or in the calf.
- Numbness: Loss of sensation in the foot, especially the bottom and outer edge.
- Tingling: A pins-and-needles sensation in the foot or leg.
- Weakness: Difficulty walking or performing activities that require foot strength.
- Foot drop: Inability to lift the front part of the foot.
Diagnosis
A healthcare professional can diagnose tibial nerve compression through a combination of:
- Physical examination: Assessing the range of motion, reflexes, and sensation in the foot and leg.
- Nerve conduction studies: Measuring the speed of electrical signals traveling through the nerve.
- Electromyography: Evaluating the electrical activity of the muscles.
- Imaging tests: Such as MRI or CT scans, to identify any underlying causes like tumors or inflammation.