Sartorius muscle

The sartorius muscle may be susceptible to pes anserine bursitis, which also involves inflammation within the knee’s medial (middle) portion. Typically, this condition results from overworking the muscle, and it is an occupational hazard for most athletes. Symptoms often include swelling, tenderness, and pain. Since the muscle covers a range of motion, severe injury such as a tear or rupture can be debilitating. Last medically reviewed on January 20, 2018

The sartorius muscle is the longest muscle in the entire human body. It is a long, thin, band-like muscle found in the anterior region of the thigh. The sartorius functions as an important flexor and rotator of the thigh at the hip joint. The sartorius muscle arises from the anterior superior iliac spine on the lateral edge of the hip bone. From the lateral hip, it descends obliquely across the hip joint and thigh, running medially and inferiorly toward the medial edge of the knee. At the knee, the sartorius turns more laterally as it descends to insert on the medial side of the tibia in the lower leg. The sartorius muscle is so long that it crosses and acts upon both the hip and knee joints. Acting on the hip joint, the sartorius works as a flexor, abductor, and lateral rotator of the thigh with the assistance of the other major muscles of the hip. At the knee joint the sartorius helps to flex the leg. Combining all of these functions into one movement, the sartorius pulls the foot and ankle toward knee of the opposite leg. The action of the sartorius is used in many situations, such as crossing the legs so that the ankle rests on the knee of the opposite leg; sitting cross-legged; or looking at the sole of one’s foot. In fact, the name sartorius (from the Latin word for “tailor”) and its nickname, the “tailor’s muscle,” are derived from the common motion of tailors crossing their legs to sit while working.

The sartorius is a small, ribbon-like muscle that runs from the forward outside portion of your pelvis down to the inside of your leg, just below the knee. It helps flex both the hip and the knee. The sartorius also aids in performing external hip rotation as the hip and knee flex (think of turning your toes out into a duck-walk position--that's external hip rotation) and abducts the hip (in other words, it moves your ankles further apart from each other if you keep your legs straight).

Article: • • • • • • • • Images: • Summary • origin: immediately below the anterior superior iliac spine • insertion: as part of the • action • primary: flexion of the hip and knee • secondary: lateral rotation and weak abduction of the thigh (such as when sitting cross-legged) • innervation: individual muscular branch from anterior division of the • blood supply: • proximal third: branches from the femoral artery, profunda femoris, quadriceps artery, lateral circumflex femoral artery • middle third: branches of femoral artery • distal third: branches of femoral artery, descending genicular arteries Gross anatomy The sartorius muscle has long parallel fibers that extend for the whole length of the muscle, running obliquely from lateral to medial down the thigh anterior to the The medial border of the sartorius is the lateral boundary of the Relations: Deep • fascial roof of adductor canal, containing • superficial femoral vessels • • nerve to the Near origin • pierced by the intermediate cutaneous nerve of thigh Near insertion • posterior • • deep • bursae separating it from the gracilis and semitendinosus tendons • pierced by the infrapatellar branch of saphenous nerve above the insertion of the sartorius Action Flexion, abduction and lateral rotation of the hip, and flexion of the knee - the movements involved in drawing the lower limb into the cross-legged sitting position. None of these actions are strong in isolation - most of its action is synergistic. Variants May o...

Sartorius: Pain & Trigger Points The Sartorius is the longest muscle in the body and lies in the anterior compartment of the thigh. If it is tense or carries trigger points, it can trigger pain in the thigh as well as in the knee. With a self-massage you can free yourself from these tensions and trigger points and thus often relieve the pain. On this page you will learn how to do this and much more! 1. Pain Patterns & Symptoms 1.1 Pain patterns Trigger pointsin the sartorius can trigger pain in the area of the groin, inner thigh and knee. The pain usually runs along the muscle and extends slightly upwards and downwards from the trigger point. The quality of the pain is usually very sharp, in contrast to most other pains caused by myofascial trigger points, which are usually dull and diffuse. 3. Function The sartorius’ functions. • External rotation at the hip • Flexion at the hip • Abduction at the hip • Flexion at the knee The muscle is involved in many movements. I would like to provide you two examples (running and cycling). When running, it flexes the hip and knee during the swing phase of the leg. In the stance phase of the gait or if you stand on one leg, it stabilizes the knee and prevents an excessive “knock-knee” and genu valgum position, respectively. When cycling with click pedals, it supports the flexion of the hip during the pulling phase. 4. Sartorius: Trigger Point Activation Trigger points in this muscle get activated mainly along with trigger points in its...

• 1 Iliopsoas • 2 Quadriceps Femoris • 2.1 Vastus Lateralis • 2.2 Vastus Intermedius • 2.3 Vastus Medialis • 2.4 Rectus Femoris • 3 Sartorius • 4 Pectineus • 5 Clinical Relevance: Testing the Quadriceps Femoris • 6 Prosection Images The muscles of the anterior compartment of the thigh are a group of muscles that (mostly) act to extend the lower limb at the knee joint. They are collectively innervated by the femoral nerve (L2-L4), and recieve arterial supply from the femoral artery. In this article, we shall look at the anatomy of the muscles of the anterior thigh – their actions, attachments and clinical correlations. Iliopsoas The iliopsoas is comprised of two separate muscles; the psoas major and iliacus. These muscles arise in the pelvis and pass under the inguinal ligament into the anterior compartment of the thigh – where they form a common tendon. Unlike many of the anterior thigh muscles, the iliopsoas does not perform extension of the leg at the knee joint. • Attachments: The psoas major originates from the lumbar vertebrae, and the iliacus originates from the iliac fossa of the pelvis. They insert together onto the lesser trochanter of the femur. • Actions: Flexion of the the thigh at the hip joint. • Innervation: The psoas major is innervated by anterior rami of L1-3, while the iliacus is innervated by the femoral nerve. Quadriceps Femoris The quadriceps femoris consists of four individual muscles – the three vastus muscles and the rectus femoris. It forms the ma...

Abstract Spontaneous muscular hematomas are quite rare as they occur mush less frequently than intracranial hematomas and gastrointestinal bleeding in patients under oral anticoagulant therapy. Coumarins, such as warfarin or acitrom, are the most widely prescribed oral anticoagulants agents and have been associated more with the development of hematomas than direct factor X inhibitors, such as rivaroxaban [ INTRODUCTION The rate of major extra cranial bleeding in patients under oral anticoagulant therapy is between 0.4 and 2% per year [ CASE PRESENTATION The clinical case consisted of a 79-year-old male patient with a medical history of atrial fibrillation and pulmonary embolism diagnosed 2 years ago. Among the prescribed medications, rivaroxaban was given as an anticoagulant therapy. The patient was lying in bed when a sudden onset of a sprain-like pain appeared on his right thigh region. He had difficulty walking and observed the progression of a large ecchymosis along the thigh, extending from the greater trochanter of the femur to above the patella. Later as the clinical manifestations worsened, the patient arrived at the emergency department. At the hospital, the treating physician noticed edema, ecchymosis and pain confined to the thigh region; therefore, ordered laboratory studies, such as prothrombin time, international normalized ratio and hemoglobin were all within the normal range for the patient’s age and comorbidities. The doctor solicited a magnetic resonance...

How to get relief from sartorius muscle pain? Do you have thigh or knee pain? Do you have a sartorius strain or hip flexor strain? Read more to learn about sartorius trigger points and why you should consider treating them with acupuncture and dry needling. This method of treatment addresses the root cause and symptoms of sartorius issues in one treatment to relieve pain and restore muscle function. About the sartorius muscle The sartorius muscle is the longest muscle in the body and the most superficial muscle in the anterior thigh. Sartorius trigger points can refer pain along the muscle from the front of the hip and thigh down through the medial thigh and to the medial knee. They can also cause leg cramps, problems climbing stairs, and numbness and tingling in the outer thigh, known as meralgia paresthetica. Sartorius trigger points cause a sharp, superficial pain, unlike most other trigger points, which cause a deeper, aching muscle pain. The sartorius attaches to the Read more to learn about sartorius trigger points and how Origin and insertion of the sartorius Sartorius origin: The origin of the sartorius muscle is at the anterior superior iliac spine (ASIS). Sartorius insertion: The insertion of the sartorius muscle is at the proximal, medial shaft of the tibia at the pes anserinus tendon. Based on the origin and insertion of the sartorius muscle, we can see that it pulls the front of the hip and the medial lower leg closer together. Since it passes through the hip ...