Tears to ligaments and tendons cause very similar symptoms. Because tendons have better blood supply than ligaments, tendon injuries tend to heal faster than ligament injuries of comparable severity.
Both ligament tears and tendon tears are serious conditions that can cause intense pain and irreversible impairment if left untreated. Sometimes, a tendon injury may lead to a complete rupture that may not fully heal. This happens because the injured tendon lacks time to heal due to continuous use or increased pressure on the tendon. Similarly, a complete tear of a ligament may need surgical treatment.
Ligaments vs. tendons
Both ligaments and tendons are fibrous connective tissues that play roles in stabilizing and moving bones. Damage can occur with overuse or overstretching, and they can become weak and prone to injury due to aging.
- Ligament: Connects two bones, one on each end, and holds them together to maintain the structure and stability of the joints.
- Tendon: Connects muscle with bone, helps move the bone, and maintains structural integrity.
Quick diagnosis of any injury is crucial because treatment varies depending on the severity of the tear. Severe tears require surgical repair.
What is a ligament injury?
A ligament injury is often called a sprain. Sprains occur mostly due to overstretching, such as during a fall. These injuries may take weeks to months to heal. The most common sprains that are associated with falls:
- Ankle sprain due twisting the ankle, causing anterior cruciate ligament injury
- Thumb sprain due to hyperextension of the thumb, causing ulnar collateral ligament injury
Sprains are graded based on the extent of the ligament damage:
- First degree: Ligament is strained but not torn. When the damaged joint is subjected to a ligament stability test, the joint stays stable and the ligament remains tight.
- Second degree: Partial tear to the ligament results in instability of the joint. There may be pain and disability of the joint that needs immediate medical intervention.
- Third degree: Complete tear of the ligament and bone fracture may be present. This injury causes deformity, discoloration, swelling, joint sensitivity, and discomfort with movement.
What is a tendon injury?
A tendon injury is often referred to as a strain. Strains result from overuse of the tendons caused by repetitive movements, leading to a tear. In most cases this type of injury is caused by several small tears in the tendon that have occurred over time. Tendon injuries may take weeks to months to heal.
The most commonly injured tendons are the Achilles tendon in the foot, quadriceps in the knee, biceps tendon in the elbow, and rotator cuff in the shoulder, because these are often overused. Sedentary habits can also cause you to become more susceptible to strains, as you may have developed muscular weakness as a result of inactivity.
Tendon injuries may involve:
How are ligament and tendon injuries treated?
Both the ligament and tendon injuries can cause pain, swelling, tenderness, and deformity. Physical examination and imaging tests can help your doctor make a diagnosis and differentiate between a ligament tear and a tendon tear.
- Minor sprains and strains are treated with the rest, ice, compress, elevation (RICE) method.
- Pain may be managed with over-the-counter pain medications, such as nonsteroidal anti-inflammatory drugs. Physiotherapy may be advised in patients with chronic injuries.
- Tendon injuries may come with a risk of subluxation (separation from the joint), so patients are often advised to make lifestyle modifications to ensure that the tendon is free from excess pressure.
- Ligament tears may not require surgical intervention unless it is severely ruptured and has associated bone fracture.
- Each type of tendon tear has its unique set of symptoms and can be treated surgically or medically depending on the severity of the injury.
- Use of splints, braces, and casts are done to immobilize the ligament or tendon, which helps speed up recovery.
Health Solutions From Our Sponsors
WebMD. Sprain Vs. Strain: What’s the Difference? https://www.webmd.com/fitness-exercise/understanding-sprains-strains#1
Swift J. Tendons: Injuries and Healing. Cornell Research. https://research.cornell.edu/news-features/tendons-injuries-and-healing
Bender N. The Differences Between a Sprain, Strain and Tear. Texas A&M Health. https://vitalrecord.tamhsc.edu/differences-sprain-strain-tear/