What muscle is located on the outer side of the thigh?

Nov 28, 2022 Source: Cainiu Health

Dr. Lin Yunfei

Introduction

The vastus lateralis is a part of the lateral portion of the quadriceps femoris and one of the strongest muscles around the thigh. It originates from the upper intertrochanteric line, the anterior and inferior border of the greater trochanter, the lateral lip of the linea aspera of the femur, and the lateral intermuscular septum. It inserts into the lateral and superior borders of the patella and is one of the primary muscles responsible for knee extension. Additionally, due to its distal attachment to the retinacula,

The muscle located on the outer side of the thigh is called the vastus lateralis, a muscle connecting two bony landmarks: the greater trochanter and the lateral condyle of the femur. The primary function of this muscle is to control abduction of the thigh, as detailed below:

The vastus lateralis is part of the lateral portion of the quadriceps femoris and is one of the strongest muscles surrounding the thigh. It originates from the upper intertrochanteric line, the anterior and inferior borders of the greater trochanter, and the lateral lip of the linea aspera along with the lateral intermuscular septum. It inserts into the lateral border and superior aspect of the patella, making it one of the main muscles responsible for knee extension. Additionally, due to the continuity of its distal fibers with the patellar retinaculum, it helps control the upward and outward movement of the patella. Therefore, knee flexion and extension are the primary movements used to exercise the vastus lateralis.

The vastus lateralis is commonly affected by various disorders, including neuropathic pain conditions. For example, meralgia paresthetica (lateral femoral cutaneous nerve neuritis), or severe inflammation in the third lumbar transverse process syndrome affecting the third lumbar nerve root, may cause a sensation of nerve traction pain in the lateral thigh muscles. Additionally, lumbar disc herniation that compresses the patient's spinal nerve roots can also lead to pain in this region.

View All

Unexplained pain in the upper thigh muscles

Pain in the upper thigh muscles may result from physiological factors, muscle strain, lumbar disc herniation, and other causes. Accumulation of lactic acid in the muscles due to insufficient elimination can lead to thigh muscle pain. Improper exercise posture may cause leg muscle strain, resulting in pain in the upper thigh. Lumbar disc herniation occurs when nucleus pulposus tissue protrudes through the annulus fibrosus, compressing spinal nerves and the cauda equina, thereby causing pain in the upper thigh muscles.

View Full Answer

Pain in the upper lateral part of the thigh

Pain in the upper outer thigh may result from physiological factors, or could be related to pathological causes such as trauma or lateral femoral cutaneous nerve inflammation. Mild cases should focus on bed rest, while severe cases may require medication or surgical treatment depending on the condition. It might also be caused by factors like lumbar disc herniation. After onset, adequate rest is important, strenuous activities should be avoided, and local care should be strengthened.

View Full Answer

What Causes Rough Skin on the Outer Thigh?

Rough skin on women’s thighs may result from genetic factors or hyperkeratotic dermatoses around hair follicles. It can also be caused by keratosis pilaris or accumulation of toxins within the body. Additionally, allergic reactions or vitamin deficiencies may contribute to this roughness. Applying a moisturizing lotion locally can help hydrate and improve the skin’s texture.