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Sciatica may also occur during pregnancy, especially during later stages, as a result of the weight of the fetus pressing on the sciatic nerve during sitting or during leg spasms. [15] While most cases do not directly harm the woman or the fetus, indirect harm may come from the numbing effect on the legs, which can cause loss of balance and falls.
The posterior cutaneous nerve of the thigh provides sensory innervation to most of [2] the posterior surface of the thigh (upper leg), [2] [1] and the superior [1] part of the posterior surface of the leg (lower leg), [2] [1] as well as (the inferior part of) the gluteal region (via inferior cluneal nerves, derived from anterior rami of S1-S2 ...
The sciatic nerve supplies sensation to the skin of the foot, as well as the entire lower leg (except for its inner side). Sensation to skin to the sole of the foot is provided by the tibial nerve, and the lower leg and upper surface of the foot via the common fibular nerve. [2]: 422–4 The sciatic nerve also innervates muscles.
The sciatic nerve is responsible for both muscle movement and sensory sensations of the legs. Sciatica is typically characterized by nerve pain like numbness, weakness, burning, or tingling ...
Sciatica is a condition characterized by deep pain occurs in the back and/or legs. It is the result of a compressed sciatic nerve, which runs from the lower back to just below the knee.
Piriformis syndrome occurs when the piriformis irritates the sciatic nerve, which comes into the gluteal region beneath the muscle, causing pain in the buttocks and referred pain along the sciatic nerve. [8] This referred pain is known as sciatica. Seventeen percent of the population has their sciatic nerve coursing through the piriformis muscle.
Lower limb. Foot. Cutaneous innervation of the lower limbs is the nerve supply to areas of the skin of the lower limbs (including the feet) which are supplied by specific cutaneous nerves.
The sciatic nerve is highly mobile in the deep gluteal space with hip and even knee movements. [7] For example, hip flexion with knee extension (also called a straight leg raise) causes the sciatic nerve in the deep gluteal space to move 28mm towards the center of the body. [14] Hip movements may also create dynamic impingement between muscles.