Introduction

Turf Toe Injury is a sprain of the first metatarsophalangeal joint (MTP). The big toe is forced to hyperextend beyond its capacity, injuring the surrounding structures such as ligaments, cartilage, and tendons. This further results in pain, swelling, and limited mobility.

If untreated, it can lead to pain, progressive deformity, and joint degeneration. It is a common sports injury in football, rugby, and running. Other traumas, such as car accidents, may also contribute to the condition. Further complications may require surgery, rehabilitation, and extended rest, potentially sidelining athletes.

Both trainers and athletes in sports with a high risk of developing Turf Toe must take proactive steps to reduce the risk. This may include the provision of proper footwear and educating on foot mechanics, as well as tailored treatment depending on the demands placed on the foot, for example, strength and stability exercises, or foot agility and flexibility.

What is Turf Toe?

Turf Toe is a hyperextension injury to the hallux metatarsophalangeal (MTP) joint, disrupting the plantar soft tissues that support the joint. The plantar plate complex plays a crucial role in resisting dorsiflexion of the first MTP joint. However, these tissues can tear under excessive forces, with the degree of damage depending on the severity of the injury. Its symptoms are: 

• Pain and swelling in the big toe joint
• Bruising and tenderness
• Limited Movement
• Inability to bend the toe
• Difficulty in applying weight to the toe

Sports Commonly Associated with Turf Toe Injuries

American Football

• Involves high-intensity contact and rapid directional changes, especially during sprinting and tackling. This risks hyperextension of the big toe, causing Turf Toe injuries
• Common for linemen and skill position players, with linemen often pushing off with their toes during blocking, and skill position players being particularly vulnerable due to the accelerations and pressure from constant physical contact

Soccer

• These players experience repetitive foot planting, sharp turns and powerful kicks, stressing the MTP joint and leading to Turf Toe
• Forwards and Midfielders are more prone as they are involved in frequent sprinting and dribbling

Rugby

• Requires athletes to sprint, make quick directional changes and maintain balance during tackling and while running with the ball - stressing the toes during quick pivots and stops, resulting in high-impact collisions subjecting the MTP joint to sudden and extreme forces

Basketball

• Basketball players perform quick cuts, jumping and landing, applying pressure on the toes, therefore making them more susceptible to Turf Toe injuries

Track and Field (Sprinting)

• Sprinters generate high levels of force with each stride as they push off the track, adding pressure on the first MTP joint. This repeated forceful extension of the toe leads to injuries. Jumpers also require explosive movements when starting and landing, emphasising foot speed and toe push-offs, both on natural and synthetic tracks, aggravating the joint over time

Mechanisms of Turf Toe in Sports

Contact Sports vs. Non-Contact Sports

In contact sports such as football, high-impact collisions, especially during tackles and scrums which generate pressure on the lower body and the MTP joint. Additionally, explosive movements: sprinting, direction changes and sudden stops, directly impact the athlete's toe joint when firmly planted on the ground.  

In contrast, non-contact sports like soccer involve foot planting and pushing off the ground; they sprint, kick, dribble, or change direction, putting tremendous strain on the MTP joint. Similarly, sprinters and jumpers form powerful toe-push-offs to accelerate and involve repetitive strain on the toe joint leading to Turf Toe injuries over time. Moreover, inadequate foot technique and improper footwear on hard or artificial surfaces can increase the risk of Turf Toe injuries.

Environmental Factors

Artificial Turf vs. Natural Grass: Sports such as football and soccer can be played on artificial turf, which limits foot movements and flexibility than on natural grass. In particular, when sprinting and planting, the lack of cushioning causes strains on the joints. There is also an increased grip on artificial surfaces, causing difficulty in pivoting rapidly. In contrast, natural grass provides cushioning, allowing better foot movement and reducing stress on the joints. However, wet or uneven grass can cause sudden slips or uneven force distribution during movement, increasing the risk of joint injuries.

Impact on Foot Planting and Joint Stress: Improper foot planting can exacerbate the risk of Turf Toe regardless of the surface. On artificial turf, the firm surfaces and rigidity of shoe soles restrict smooth foot movements, forcing the toe into extreme positions during quick stops or direction changes. While natural grass provides more flexibility, if players incorrectly plant their feet, or when there is a presence of wet, slippery and uneven ground, influences the likelihood of Turf toe injuries.

Prevention and Treatment

Preventive Measures

• Proper Footwear: Wearing appropriate footwear with cleats offers support and cushioning, additionally providing adequate arch support and a secure fit. Footwear with cleats providing a good grip will be beneficial for athletes on artificial turf to enable rapid pivoting, while cleats with a flexible sole allow stability during natural and sudden foot movements for athletes on natural grass
• Strengthening Exercises for the Feet and Ankles: Targeted exercises strengthen the muscles and tendons around the foot and ankle, improving flexibility and stability of the MTP joint, reducing the risk of Turf Toe injuries, and enhancing foot function

Treatment and Rehabilitation

RICE (Rest, Ice, Compression, Elevation): a protocol for managing Turf Toe injuries, to reduce pain and inflammation for healing:

• Rest: Adequate rest is essential to allow the body to heal without further movements made to the joint. Athletes may be encouraged to use crutches to stabilise movement for tissue repair
• Ice: Applying an ice pack or cold compress reduces inflammation and numbs the pain. Avoid applying directly to the skin. Use a cloth to wrap the ice pack to prevent frostbite
• Compression: Wrapping the injured area with a bandage (not too tight to avoid restricting blood flow) controls swelling by preventing fluid accumulation in the tissues. A splint or brace can also be used to stabilise the toe joint
• Elevation: Elevating the foot above heart level reduces swelling by draining fluids from the affected area. Using pillows or cushions when resting or sleeping can support the foot and aid in fluid drainage

Physical Therapy: Rehabilitation focuses on restoring strength, flexibility and mobility, through tailored exercises focusing on strengthening and stretching such as toe curls, resistance band exercises and calf raises. Joint mobilisation can help restore motion and reduce stiffness in the joint by improving flexibility. This is where the physiotherapist gently moves the joint in a controlled range of motion.

Kinesiology Taping Techniques: Taping combined with exercises can provide additional support with stability, by restricting excessive toe motion but allowing some flexibility. 

Summary

Turf Toe is a common sports injury that affects athletes during rapid acceleration and sudden stops, or changes in direction. Understanding its causes, risks, and prevention methods is crucial for both athletes and trainers to reduce the risk of injury. 

It is primarily caused by hyperextension of the first MTP joint when the toe is forced beyond its normal range of motion.

Proper footwear, along with consistent exercises, can minimise the risk of Turf Toe by reducing tension around the joint. The R.I.C.E. protocol helps in improving joint strength and flexibility.

The earlier intervention of Turf Toe is addressed, the more likely athletes are to recover fully and return to their sport without permanent damage to the MTP joint. When biomechanical issues are experienced, athletes should seek immediate medical attention. Injury prevention must be maintained through good foot health, with a combination of wearing proper footwear and implementing regular foot exercises, to enhance performance and longevity in sports.