Oliver Bee RMTRegistered Massage Therapist

Massage therapy · Kitchener–WaterlooQuadriceps Strain

Hip & Thigh

What It Is

Line drawing of the front of the thigh, showing the quadriceps muscles running from the pelvis and thigh bone down to the kneecap.
The quadriceps meet at the kneecap, and the one that also crosses the hip is the one most often strained.

Muscle strains are quite common, especially in people who take part in sports. There are three sets of muscles in the thigh: the quadriceps muscles along the front, the hamstring muscles along the back and the adductor muscles on the inside. The hamstrings and quadriceps work together to straighten and bend the leg, while the adductor muscles pull the legs together (AAOS, n.d.).

The quadriceps and hamstrings are particularly at risk of a strain because they cross both the knee and hip joints. They are also used in high-speed activities, such as running, hurdles, long jump, football, soccer and basketball (AAOS, n.d.). Muscle strains usually happen when a muscle is stretched beyond its limit, tearing the muscle fibres (AAOS, n.d.). A direct blow to the muscle can cause a similar injury (AAOS, n.d.).

A muscle strain is a tear of the muscle fibres. Strains are graded by how severe they are. A grade I strain is mild and usually heals fairly quickly, a grade II strain is moderate, and a grade III strain is a severe tear of the muscle that may take months to heal (AAOS, n.d.). A mild strain can take 10 days to 3 weeks to recover, and a severe strain up to 6 months (AAOS, n.d.).

Quadriceps Strain Anatomy

The quadriceps are made up of four muscles: rectus femoris, vastus lateralis, vastus intermedius and vastus medialis (Cleveland Clinic, 2025). The term quadriceps literally means "four heads". Researchers have recently described a possible fifth muscle in this group as well (Cleveland Clinic, 2025). The quadriceps run along the front of the thigh from the hip to the knee. They attach around the pelvis, and at the knee they attach to the patella (kneecap) through the quadriceps tendon (Cleveland Clinic, 2025).

On the opposite side of the leg you have the hamstring muscle group, made up of three muscles. The hamstrings work in the opposite way to the quadriceps, which makes them antagonists.

Not a diagnosis — for more information, contact me or another trusted healthcare provider.

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