Hamstring Injury in Sports Persons

You must have read about sportspeople getting hamstring injuries in the newspapers many times. If you are an active individual, there a good chance that you have felt a nagging pain at the back of your thigh at some point of time.

Injuries to hamstring muscles are among the most common injuries in sports, especially in disciplines that demand speed, sudden acceleration, deceleration and kicking.

Sports such as football, cricket, athletics, hockey, basketball, and rugby show particularly high rates of hamstring injuries. These injuries not only cause pain and time away from sport but also have a high recurrence rate if not treated properly.

Let’s try to understand what the hamstring injury really means and how significant it can be.

What are hamstrings?

Hamstrings are a group of muscles on the back side of our thighs. They cross both the hip and knee joints and function to take the hip backwards (extension) and bend the knee (flexion), which are crucial during sprinting, jumping, and sudden changes in d

irection.

They consist of three muscles:

• Biceps femoris

• Semitendinosus

• Semimembranosus

How do hamstrings get injured?

Hamstring injuries occur due to sudden excessive stretch or overloading of the muscles. The common mechanisms include:

1. Sprinting (high-speed running)

This is the most common mode of injury. During the terminal swing phase of running, the hamstrings contract eccentrically to slow down the leg. At this point, the muscle is both lengthening and contracting, making it vulnerable to a tear.

This causes sudden-onset sharp pain, falls during running, and a limp while walking. Injury mostly happens in the muscle belly or at the musculo-tendinous junction.

2. Kicking injury

Seen in footballers and cricketers (especially fast bowlers). Forceful hip flexion with knee extension can overstretch the hamstrings, leading to partial tears.

 

3. Stretching injury

Occurs during activities requiring extreme flexibility, such as dancers, gymnasts, martial artists, and yoga practitioners. These injuries often involve the proximal hamstrings (near the buttocks) and may take longer to heal.

4. Fatigue-related injury

When muscles are tired, they lose their ability to efficiently absorb energy. Hamstring injury may occur towards the end of a match or training session, especially in poorly conditioned athletes.

5. Overuse and microtrauma

Repetitive loading without adequate recovery leads to micro-tears and eventually a symptomatic injury. This is commonly seen in marathon runners and cricketers with heavy match schedules.

What are the risk factors?

• Previous hamstring injury

• Poor warm-up

• Tight hamstrings

• Weak gluteal and core muscles

• Muscle imbalance between the quadriceps and hamstrings

• Poor running mechanics

• Inadequate rest between sessions

What are the grades of hamstring injuries?

• Grade 1: Mild strain (stretch) without any structural damage

• Grade 2: Partial tear with moderate pain and swelling

• Grade 3: Complete tear with severe pain, bruising and loss of function

There are two distinct types of injuries:

• High hamstring injury: Tear close to the origin from the pelvic bone.

• Avulsion injury: Tendon pulls off from the bone, more common in adolescents.

When to suspect a hamstring injury?

• Sudden pain in the back of the thigh during activity

• Swelling or bruising over the thigh

• Difficulty in walking or continuing the sport

• Pain on knee when bending or hip extension (taking the leg backwards)

• Pain while sitting (in high hamstring injury)

How are these injuries diagnosed?

A clinical examination by an orthopaedic surgeon provides a provisional diagnosis. Imaging helps in:

• Ultrasound: gives primary information about a tear

• MRI: Gold standard for defining the location, size, and severity of a tear

What is the treatment?

Treatment depends on the severity, location, and type of injury. The most common injuries are grades 1 and 2, for which the following treatment protocol is followed.

A) Acute Phase (Initial 1 week):

This phase demands adequate rest for healing.

RICE therapy

• Rest and activity modification

• Icepacks to reduce pain and swelling

• Compression bandage

• Elevation

• Anti-inflammatory medications

B) Subacute Phase (Week 1 to 3):

This phase is all about returning to routine mobility and basic strengthening

• Gentle range-of-motion exercises for the hip and knee

• Gradual stretching as per pain tolerance

• Isometric strengthening exercises

• Core and pelvic stabilisation exercises

C) Rehabilitation Phase (Week 3 onwards):

This is the most important part of treatment.

• Progressive strengthening of hamstrings (especially eccentric training)

• Strengthening of gluteal and core muscles

• Neuromuscular training

• Sport-specific drills

• Sprinting and agility training under supervision

Additional Therapies:

• Physiotherapy modalities: (ultrasound, laser, shockwave, Matrix Rhythm Therapy). They help reduce inflammation and muscle stiffness in the early stages of rehabilitation.

• Platelet-rich plasma (PRP) injections are used in selected cases of chronic pain that fail to subside despite mild injuries. PRP promotes healing in such cases, especially in avulsion injuries.

Surgical Repair:

Surgery, although rarely required, is indicated in:

• Complete (grade 3) hamstring tears

• Proximal hamstring avulsion injuries from the bone

• Injuries not improving with conservative treatment

 

What is the ‘Return to Sport’ (RTS) timeline?

Return to sport is based on achieving following milestones:

• Pain-free full range of motion of hip and knee

• At least 90% hamstring strength compared to the opposite side

• Ability to sprint, cut, and jump without pain

• No tenderness on examination

Premature return is the biggest cause of re-injury, which is often more severe and prolonged.

Usual time needed to return to playing ranges between 4 weeks (grade 1, 2 injury) to 3 months (grade 3 injury).

How to prevent these injuries?

• Thorough warm-up

• Regular stretching

• Eccentric strengthening (Nordic hamstring exercises)

• Core and gluteal strengthening

• Adequate hydration and nutrition

• Structured and supervised training programs

So, we learnt…

Hamstring injuries are common but preventable with appropriate training and conditioning. Early diagnosis, structured rehabilitation, and graded return to sport are key to successful recovery. Athletes should never ignore persistent posterior thigh pain, as untreated hamstring injuries can become chronic and lead to repeated breakdowns.