A thigh strain or quadriceps strain is a tear in one of the quadriceps muscles at the front of the thigh. It can range from a mild discomfort to a full blown tear of most of the muscle, resulting in severe pain and inability to walk.
We explain thigh strains and how best to recover from one as well as what a professional therapist can do to help.
Thigh strain symptoms
Symptoms of a quadriceps strain or thigh strain typically include a sudden sharp pain at the front of the thigh. Strains are graded 1 to 3 depending on how bad the injury is with a grade 1 being mild and a grade 3 involving a complete or near complete tear of the muscle. Athletes with a grade one strain may be able to carry on running at the time of injury but a grade 2 or 3 will be severe enough to result in the athlete having to stop training or competition.
Grade 1 symptoms of a grade 1 quadriceps strain are not always serious enough to stop training at the time of injury. A twinge may be felt in the thigh and a general feeling of tightness. The athlete may feel mild discomfort on walking and running might be difficult. There is unlikely to be swelling. A lump or area of spasm at the site of injury may be felt.
Grade 2 symptoms are more severe than a grade two. The athlete may feel a sudden sharp pain when running, jumping or kicking and be unable to play on. Pain will make walking difficult and swelling or mild bruising would be noticed. The pain would be felt when pressing in on the suspected location of the quad muscle tear. Straightening the knee against resistance is likely to cause pain and the injured athlete will be unable to fully bend the knee.
Grade 3 symptoms consist of a severe, sudden pain in the front of the thigh. The patient will be unable to walk without the aid of crutches. Bad swelling will appear immediately and significant bruising within 24 hours. A static muscle contraction will be painful and is likely to produce a bulge in the muscle. The patient can expect to be out of competition for 6 to 12 weeks.
Read more on assessment & diagnosis.
What is a quadriceps strain?
The quadriceps muscles are the muscles on the front of the thigh. They consist of the vastus lateralis, vastus medialis, vastus intermedius, and the rectus femoris. A strain is a tear in the muscle. These can range in severity, from a very small tear to a complete rupture.
Tears of the quadriceps muscles usually occur following an activity such as sprinting, jumping or kicking, especially if a thorough warm-up hasn't been undertaken. Any of these muscles can strain or tear but probably the most common is the rectus femoris. This is because it is the only one of the four muscles which cross both the hip and knee joints which makes it more susceptible to injury.
A strain can occur either at the musculotendinous junction where the muscle becomes tendon just above the knee, or higher up in the belly of the muscle. Injury to the rectus femoris tendon at the hip either as a tear or an overuse inflammation type injury can also occur.
Injuries that occur following a direct impact on the muscle, such as being hit by a ball or other hard object, are more likely to be contusions and should be treated slightly differently.
Thigh strain treatment
Initial treatment for a thigh strain should be to apply the PRICE principles of protection, rest, ice, compression, and elevation.
Protect the injured muscle by wearing a thigh support or compression bandage.
Rest from all sporting activities in the early stages of healing. Continuing to train on an injured muscle will prevent it from healing properly. Elevation of the injured limb should also be done in the early stages and this is best achieved by lying on a sofa with the leg resting up on 2 pillows.
Ice - apply ice or better still a cold therapy and compression wrap for the first 72 hours after injury. Apply ice for 10 minutes every hour initially reducing the frequency as symptoms improve. This will help stop internal bleeding and swelling and hopefully limit the extent of the injury. After the initial acute stage treatment will depend on the severity of the injury.
Compression will help reduce swelling and protect the area.
Elevate the injured leg to help swelling and tissue fluids flow away from the site of the muscles strain.
A professional therapist can make an accurate diagnosis and may use electrotherapy such as ultrasound to aid the healing process. Sports massage may be beneficial after the initial acute stage has passed. They will advise on a full rehabilitation program which should include stretching and strengthening exercises.
Read more on treatment and rehabilitation.
After the initial acute stage of the injury has passed, a gradual rehabilitation program consisting of stretching and strengthening exercises should begin.
Stretching exercises should always be pain-free starting with gentle static stretches and progress through to more sports specific stretches performed dynamically (with movement). Do not start stretching too early as the healing of the muscle may be compromised (not before day 5 post-injury). The initial active range of motion exercises is done where the knee is bent through as full a range as possible. A simple static quadriceps stretch is done when pain allows.
Read more on quad strain stretching exercises
Strengthening exercises - the aim of strengthening exercises is to gradually increase the load that is put through a muscle. Strengthening exercises can start as early as day 5 as long as they are low-level and must be done pain-free. If it hurts do not do it! Isometric or static exercises are advised first and then progress to dynamic exercises with resistance band and finishing with sports specific running and sprint drills.
Eventually, more sports specific or functional strengthening exercises are done involving sprinting, change of direction and plyometric or hopping type exercises.
Read more on strengthening exercises.