Pectineus

The pectineus is a muscle located in the anterior (front) region of the upper thigh, belonging to the group of muscles collectively referred to as the 'hip adductors.' Its primary function is to adduct (draw the leg towards the midline of the body), flex (bend), and externally rotate the femur (thigh bone) at the hip joint. The pectineus originates from the superior pubic ramus (a part of the pelvic bone) and inserts onto the pectineal line of the femur. Its innervation is primarily by the femoral nerve, and also by the accessory obturator nerve, which also supplies the obturator externus muscle. The muscle plays a significant role in movements such as crossing the legs, bringing the knees together, and providing stability to the hip joint during various activities, including walking, running, and climbing. The pectineus is the most superior of the 'hip adductors.'

Pectineus meaning with examples

• During physical therapy following a hip injury, exercises are often prescribed to strengthen the pectineus muscle to improve adduction and stability. The physiotherapist might use resistance bands or ask the patient to squeeze a ball between their legs. This helps to restore the full range of motion and the proper function of the hip.
• The pectineus muscle can be strained during activities that involve sudden or repetitive movements, such as kicking a soccer ball or pivoting during dance. Pain in the inner thigh and groin are a common indicator. Proper warm-up before exercise, including stretching the pectineus, is essential to prevent such injuries.
• When examining an athlete with groin pain, a doctor will often palpate the pectineus muscle, assessing its tenderness and function to differentiate between various potential sources of the discomfort. Palpation may be combined with range-of-motion tests to better understand the nature and intensity of the pain.
• The pectineus's attachments on the pelvis and femur make it a key muscle in maintaining postural stability. Weakness or imbalance in the pectineus can contribute to instability and poor alignment of the hip and lower back, especially in the elderly or individuals with limited mobility.