The document discusses the anatomy, causes of injury, symptoms, treatment, and prognosis of sciatic nerve injury. It also discusses common peroneal nerve injury, including causes, symptoms, and nerve entrapment syndromes that can occur when peripheral nerves pass through fibro-osseous tunnels. Sites of potential nerve entrapment include the carpal tunnel, cubital tunnel, and tarsal tunnel. Treatment involves avoiding compromising postures, splinting, steroid injections, and potential surgical decompression if other treatments fail.