Athena Vale
The adductor muscle group is a set of three muscles in the inner thigh that help control the leg and stabilize the pelvis during activities such as running, sprinting, accelerating, and jumping. The adductor muscles are also the second most commonly injured muscle group in soccer players, with a recovery time of up to 20 weeks. The adductor muscles include the adductor longus, adductor brevis, adductor magnus, and gracilis. These muscles help to adduct the thigh at the hip joint, bringing the thighs together, and provide medial rotation.
| Characteristics | Values |
|---|---|
| What is it? | A group of muscles in the medial compartment of the thigh. |
| Number of muscles | 3 or 4 primary muscles, depending on the source. |
| Names of muscles | Adductor longus, adductor brevis, adductor magnus, and gracilis (sometimes pectineus is included). |
| Muscle shape | Fan-shaped, triangular, or flat. |
| Muscle size | Adductor magnus is the largest. Adductor brevis is short. |
| Muscle position | Adductor longus is the most anterior. Adductor magnus is the most posterior. |
| Muscle function | Adduct the thigh, aid balance, power, speed, and alignment, and stabilize the pelvis and lower extremity. |
| Muscle innervation | Obturator nerve, except for a small part of adductor magnus which is innervated by the tibial nerve, and the gracilis which is innervated by the femoral nerve. |
| Muscle injuries | Adductor tendinopathy is common, especially in athletes, and can cause groin pain and hamstring tendon avulsion. |
| Muscle exercises | Squats, wide stance squats, and hip abduction exercises. |
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What You'll Learn
The adductor muscle group's role in stabilising the pelvis
The adductor muscle group is a set of three muscles in the inner thigh that help control the leg and stabilise the pelvis. The three muscles are the adductor magnus, adductor longus, and adductor brevis. These muscles originate on the pubic rami, or the front of the pelvis, and distally insert on the linea aspera. The adductor magnus, the largest of the three, also has attachments at the ischial tuberosity and adductor tubercle.
The adductor muscles are responsible for moving the thigh closer to the body's central axis, a movement known as adduction. They also play a role in hip flexion and rotation. By performing these functions, the adductor muscles help to stabilise the pelvis during activities such as walking and running. This stability is crucial for maintaining balance and posture, especially during dynamic movements like sprinting, accelerating, and jumping.
The adductor longus, a large, flat muscle, partially covers the adductor brevis and adductor magnus, forming the medial border of the femoral triangle. The adductor brevis is a short muscle that lies underneath the adductor longus. The adductor magnus, the largest and most posterior of the medial thigh muscles, is considered the most powerful and complex of the adductor group. It divides into its adductor (pubofemoral) and hamstring (ischiocondylar) portions.
The adductor muscle group is the second most commonly injured muscle group in soccer players, with a lengthy recovery time of up to 20 weeks. This highlights the importance of including adductor-strengthening exercises in training regimens to improve hip muscle strength, mobility, and athletic performance, as well as to prevent injuries. For example, the wide stance squat, or sumo squat, effectively targets the adductor muscles and can be performed with or without weighted equipment.
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The adductor magnus, the largest muscle in the medial compartment
The adductor magnus is the largest muscle in the medial compartment of the thigh. It is a large, powerful triangular muscle that extends over the entire medial side of the thigh. The adductor magnus is a composite muscle consisting of two parts: the adductor part (pubofemoral part) and the ischiocondylar part. The adductor part can be further divided into two portions: the superior portion, which arises from the pubic ramus, and the inferior portion, which arises from the ischial ramus. The superior portion passes obliquely and almost horizontally to insert at the upper part of the linea aspera. The larger, inferior portion of the adductor part fibres that originate from the ischial ramus fan out laterally to insert along the linea aspera and the medial supracondylar line.
The ischiocondylar part of the adductor magnus stems from the ischial tuberosity and forms a thick medial margin that descends towards the lower end of the thigh. It ends in a rounded tendon and inserts at the adductor tubercle on the medial femoral condyle. The adductor magnus is a dynamic stabiliser of the pelvis and femur and is also a prime mover of the femur into adduction. It is a more effective hip extensor than the hamstrings or gluteus maximus when the hip is flexed. The adductor magnus plays a similar function to the deltoid muscle, with one portion flexing the thigh and working as a medial rotator, while the other extends the thigh and is a lateral rotator.
The adductor magnus is related to several neurovascular structures. Anteriorly, it is related to the pectineus, adductor brevis, adductor longus, femoral artery and vein, profunda artery and vein, and the posterior branches of the obturator artery, nerve and vein. Posteriorly, it is related to the gluteus maximus, semimembranosus, semitendinosus, and the sciatic nerve. Medially, it is related to the gracilis and sartorius muscles, while superiorly, it is related to the obturator externus and quadratus femoris. The adductor portion is innervated by the posterior division of the obturator nerve, while the hamstring portion is innervated by the sciatic nerve.
The adductor magnus is susceptible to injuries such as adductor tendinopathy, which can cause groin pain and injury, especially in athletes. Adductor canal syndrome is another condition associated with the adductor magnus, resulting in acute arterial occlusion in younger men due to compression by an abnormal musculotendinous band.
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The adductor longus, a large, flat muscle
The adductor longus is a large, flat muscle that is one of the adductor muscles of the medial thigh. It is fan-shaped and situated most anteriorly in the group of hip adductors, which also includes the adductor brevis, adductor magnus, gracilis, and obturator externus. The adductor longus muscle plays a crucial role in the movement of the thigh and lower extremity, bringing them closer to the body's central axis. This muscle also aids in external/lateral rotation and flexion of the thigh, contributing to overall balance and stability during activities such as walking and running.
The adductor longus muscle originates from the pubic rami, which are located at the front of the pelvis, and inserts on the linea aspera of the femur. This insertion point is between the adductor magnus and the vastus medialis muscle, and superior to the adductor brevis insertion. The adductor longus muscle forms the medial border of the femoral triangle, a significant anatomical landmark in the thigh region.
The adductor longus is an essential muscle for athletes and individuals seeking to improve their balance, power, and speed. Strengthening exercises such as wide-stance squats (or sumo squats) can effectively target this muscle group, enhancing athletic performance and helping to prevent injuries.
The adductor longus muscle works in conjunction with other hip adductors to stabilise the pelvis and maintain balance during various movements. This muscle group is often overlooked in strength training and preventative programs, but it is crucial to focus on strengthening the adductors to avoid injuries, especially in sports like soccer where adductor strains are common.
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The adductor brevis, a short muscle
Adductor muscles are a group of three muscles that exist in the inner thigh. They help control the leg and stabilize the pelvis during activities such as running, sprinting, accelerating, and jumping. The adductor brevis is one of the five adductor muscles of the medial thigh. It is a flat, triangular muscle that runs from the pubis to the medial aspect of the femur. The adductor brevis is one of the shortest muscles in this group and is a weak adductor of the thigh.
The adductor brevis muscle has a relatively narrow origin located on the anterior surface of the body of pubis, while some fibres also arise from the lateral surface of the inferior pubic ramus. From there, the muscle widens into a triangular shape as it runs inferolaterally towards its insertion on the femur. The muscle inserts via an aponeurosis on the superior half of the medial lip of linea aspera. The wide insertion is located on the upper third of the femur, medial to the insertion of the adductor magnus, and lateral to the insertion of the pectineus muscle.
The blood supply for the adductor brevis muscle typically comes from the deep femoral artery (profunda femoris) and from its branch, the artery for the adductors. It can also be supplied partially from the medial circumflex femoral and obturator artery. Venous blood from this region is drained by the deep femoral vein, which follows the path of its artery before emptying into the femoral vein. The adductor brevis is innervated by the obturator nerve, derived from the lumbar plexus (anterior branches of spinal nerves L2-L4).
The main function of the adductor brevis muscle is the adduction of the thigh. This action is particularly active when the thigh is in a flexed position and during the gait cycle. The adductor brevis also has a role in the external rotation and flexion of the hip. All adductors of the thigh pull the leg medially when walking, helping to maintain balance and shift the centre of gravity onto the supporting foot while standing and walking.
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Adductor muscle exercises to improve hip strength
Adductor muscles are a group of three muscles that are located in the inner thigh. They help control the leg and stabilise the pelvis during activities such as sprinting, jumping, and running. The adductor muscles include the adductor longus, adductor brevis, and adductor magnus.
Adductor muscle exercises are important to improve hip strength and prevent injury. Here are some exercises to strengthen the adductor muscles:
Lateral Lunges
Stand with your feet together, then step to your side twice, shoulder-width apart, and bend your knee. Your other leg should remain straight. Return to the starting position. This exercise targets both the abductor and adductor muscles.
Copenhagen Adductor Strengthening
Rest on your side with your bottom leg and elbow bent at a 90-degree angle. Place your top leg on a chair or high step, and lift your pelvis off the floor. Elevate your bottom leg so your knees touch, then lower it back down. Repeat as needed.
Side-Lying Leg Lifts
Lie on your side and place your top leg and foot flat on the floor in front of you. Lift your bottom leg upwards towards the ceiling, and repeat the movement. You can also hold the position to feel a pull on the inside and outside of your thigh.
Magic Circle
Lie down and bend your knees so your feet are flat on the ground. Squeeze a magic circle between your thighs. You will feel pressure on the insides of your thighs.
Banded Adduction
Secure an exercise band around your ankle, with the other end anchored to a fixed object. Move your straight leg across your body to create resistance in the band.
When performing adductor exercises, it is important to properly warm up, gradually increase the range of motion, and focus on the muscle contraction to prevent injury and maximise efficiency.
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Frequently asked questions
Adductor muscles are a group of muscles in the medial compartment of the thigh. They are also known as hip adductors. There are four primary muscles in this group: adductor longus, adductor brevis, adductor magnus, and gracilis.
Adductor muscles help control the leg and stabilise the pelvis during activities such as running, sprinting, accelerating, and jumping. They also bring the thighs together (called adduction) and help maintain balance while walking.
Some exercises that target the adductor muscles include wide stance squats, sumo squats, and hip abduction exercises.
