Understanding Groin Strains: Injuries, Symptoms, & Treatments

When a groin strain injury happens, can knowing the symptoms help in the diagnosis, treatment, and recovery times?

Groin Strain Injury

A groin strain is an injury to an inner thigh muscle. A groin pull is a type of muscle strain affecting the adductor muscle group (the muscles help pull the legs apart). (Parisa Sedaghati, et al., 2013) The injury is caused when the muscle is stretched beyond its normal range of motion, creating superficial tears. Severe strains can tear the muscle in two. (Parisa Sedaghati, et al., 2013)

• A groin muscle pull causes pain and tenderness that worsens when squeezing the legs together.
• There may also be swelling or bruising in the groin or inner thigh.
• An uncomplicated groin pull takes four to six weeks to heal with proper treatment. (Andreas Serner, et al., 2020)

Symptoms

A groin pull can be painful, interfering with walking, navigating stairs, and/or driving a car. In addition to pain, other symptoms around the injured area include: (Parisa Sedaghati et al., 2013)

• A popping sound or snapping sensation when the injury occurs.
• Increased pain when pulling the legs together.
• Redness
• Swelling
• Bruising of the groin or inner thigh.

Groin pulls are graded by severity and how much they impact mobility:

Grade 1

• Mild discomfort but not enough to limit activities.

Grade 2

• Moderate discomfort with swelling or bruising that limits running and/or jumping.

Grade 3

• Severe injury with significant swelling and bruising can cause pain while walking and muscle spasms.

Signs of a severe groin strain

• Difficulty walking
• Groin pain while sitting or resting
• Groin pain at night
• A healthcare provider should see severe groin pulls because the muscle may have ruptured or be on the verge of rupturing.
• In severe cases, surgery is necessary to reattach the torn ends.

Groin pulls are sometimes accompanied by a stress fracture of the pubis/forward-facing pelvic bones, which can significantly extend healing and recovery time. (Parisa Sedaghati et al., 2013)

Causes

Groin pulls are often experienced by athletes and individuals who play sports where they must stop and change directions quickly, placing excessive strain on the adductor muscles. (Parisa Sedaghati et al., 2013) The risk is increased in individuals who: (T. Sean Lynch et al., 2017)

• Have weak hip abductor muscles.
• Are not in adequate physical condition.
• Have a previous groin or hip injury.
• Pulls can also occur from falls or extreme activities without the proper conditioning.

Diagnosis

A healthcare provider will perform a thorough investigation to confirm the diagnosis and characterize the severity. This involves: (Juan C. Suarez et al., 2013)

Medical History Review

• This includes any previous injuries and specifics about where and when the symptoms started.

Physical Examination

• This involves palpating – lightly touching and pressing the groin region and manipulating the leg to understand better where and how extensive the injury is.

Imaging Studies

• Ultrasound or X-rays.
• If a muscle rupture or fracture is suspected, an MRI scan may be ordered to visualize soft tissue injuries and stress fractures better.

Differential Diagnosis

Certain conditions can mimic a groin pull and require different treatments. These include: (Juan C. Suarez, et al., 2013)

Sports Hernia

• This type of inguinal hernia occurs with sports and work injuries.
• It causes a portion of the intestine to pop through a weakened muscle in the groin.

Hip Labral Tear

• This is a tear in the cartilage ring of the labrum outside the rim of the hip joint socket.

Hip Osteoarthritis

• This is the wear-and-tear form of arthritis that can present with groin pain symptoms.

Osteitis Pubis

• This is inflammation of the pubic joint and surrounding structures, usually caused by the overuse of the hip and leg muscles.

Referred Groin Pain

• This nerve pain originates in the lower back, often due to a pinched nerve, but is felt in the groin.

Treatment

Beginning treatment is conservative and includes rest, ice application, physical therapy, and prescribed gentle stretching and exercises.

• Individuals may need crutches or a walking device to reduce pain and prevent further injury if the pain is significant. (Andreas Serner, et al., 2020)
• Physical therapy will be a part of the treatment plan.
• Over-the-counter pain medications like Tylenol/acetaminophen or Advil/ibuprofen can help with pain relief short term.
• If there is severe pain from a grade 3 injury, prescription medications may be used for a short period to help minimize pain. (Andreas Serner, et al., 2020)
• Surgery is not usually necessary. (Andreas Serner, et al., 2020)

Recovery

Recovery times can vary based on the injury’s severity and physical condition before the injury.

• Most injuries will heal within four to six weeks with rest and proper treatment.
• Severe groin strains can take up to 12 weeks or longer if surgery is involved. (Andreas Serner, et al., 2020)

Injury Rehabilitation

References

Sedaghati, P., Alizadeh, M. H., Shirzad, E., & Ardjmand, A. (2013). Review of sport-induced groin injuries. Trauma monthly, 18(3), 107–112. doi.org/10.5812/traumamon.12666

Serner, A., Weir, A., Tol, J. L., Thorborg, K., Lanzinger, S., Otten, R., & Hölmich, P. (2020). Return to Sport After Criteria-Based Rehabilitation of Acute Adductor Injuries in Male Athletes: A Prospective Cohort Study. Orthopaedic journal of sports medicine, 8(1), 2325967119897247. doi.org/10.1177/2325967119897247

Lynch, T. S., Bedi, A., & Larson, C. M. (2017). Athletic Hip Injuries. The Journal of the American Academy of Orthopaedic Surgeons, 25(4), 269–279. doi.org/10.5435/JAAOS-D-16-00171

Suarez, J. C., Ely, E. E., Mutnal, A. B., Figueroa, N. M., Klika, A. K., Patel, P. D., & Barsoum, W. K. (2013). Comprehensive approach to the evaluation of groin pain. The Journal of the American Academy of Orthopaedic Surgeons, 21(9), 558–570. doi.org/10.5435/JAAOS-21-09-558