Fractures & Trauma

The ankle joint is composed of three bones: the tibia, fibula, and talus which are articulated together. The ends of the fibula and tibia (lower leg bones) form the inner and outer malleolus, which are the bony protrusions of the ankle joint that you can feel and see on either side of the ankle. The joint is protected by a fibrous membrane called a joint capsule, and filled with synovial fluid to enable smooth movement.

Ankle injuries are very common in athletes and in people performing physical work, often resulting in severe pain and impaired mobility. Pain after ankle injuries can either be from a torn ligament and is called ankle sprain or from a broken bone which is called ankle fracture. Ankle fracture is a painful condition where there is a break in one or more bones forming the ankle joint. The ankle joint is stabilized by different ligaments and other soft tissues, which may also be injured during an ankle fracture.

Causes

Ankle fractures occur from excessive rolling and twisting of the ankle, usually occurring from an accident or activities such as jumping or falling causing sudden stress to the joint.

Symptoms

With an ankle fracture, there is immediate swelling and pain around the ankle as well as impaired mobility. In some cases, blood may accumulate around the joint, a condition called hemarthrosis. In cases of severe fracture, deformity around the ankle joint is clearly visible where bone may protrude through the skin.

Types of fractures

Ankle fractures are classified according to the location and type of ankle bone involved. The different types of ankle fractures are:

• Lateral Malleolus fracture in which the lateral malleolus, the outer part of the ankle is fractured.
• Medial Malleolus fracture in which the medial malleolus, the inner part of the ankle, is fractured.
• Posterior Malleolus fracture in which the posterior malleolus, the bony hump of the tibia, is fractured.
• Bimalleolar fractures in which both lateral and medial malleolus bones are fractured
• Trimalleolar fractures in which all three lateral, medial, and posterior bones are fractured.
• Syndesmotic injury, also called a high ankle sprain, is usually not a fracture, but can be treated as a fracture.

Diagnosis

The diagnosis of the ankle injury starts with a physical examination, followed by X-rays and CT scan of the injured area for a detailed view. Usually it is very difficult to differentiate a broken ankle from other conditions such as a sprain, dislocation, or tendon injury without having an X-ray of the injured ankle. In some cases, pressure is applied on the ankle and then special X-rays are taken. This procedure is called a stress test. This test is employed to check the stability of the fracture to decide if surgery is necessary or not. In complex cases, where detail evaluation of the ligaments is required an MRI scan is recommended.

Treatments

Immediately following an ankle injury and prior to seeing a doctor, you should apply ice packs and keep the foot elevated to minimize pain and swelling.

The treatment of ankle fracture depends upon the type and the stability of the fractured bone. Treatment starts with non-surgical methods, and in cases where the fracture is unstable and cannot be realigned, surgical methods are employed.

In non-surgical treatment, the ankle bone is realigned and special splints or a plaster cast is placed around the joint, for at least 2-3 weeks.

With surgical treatment, the fractured bone is accessed by making an incision over the ankle area and then specially designed plates are screwed onto the bone, to realign and stabilize the fractured parts. The incision is then sutured closed and the operated ankle is immobilized with a splint or cast.

Post-operative care

After ankle surgery, you will be instructed to avoid putting weight on the ankle by using crutches while walking for at least six weeks.

Physical therapy of the ankle joint will be recommended by the doctor. After 2-3 months of therapy, the patient may be able to perform their normal daily activities.

Risks and complications

Risks and complications that can occur with ankle fractures include improper casting or improper alignment of the bones which can cause deformities and eventually arthritis. In some cases, pressure exerted on the nerves can cause nerve damage, resulting in severe pain.

Rarely, surgery may result in incomplete healing of the fracture, which requires another surgery to repair.

The foot has 26 bones, and can be divided into 3 parts:

• The hind foot is comprised of two bones, the talus bone which connects to the bones of the lower leg, and the calcaneus bone which forms the heel.
• The midfoot is comprised of the navicular, cuboid, and three cuneiform bones.
• The forefoot is made up of five metatarsal bones and 14 toe bones called phalanges.

The hind foot is separated from the midfoot by the mediotarsal joint and the midfoot is separated from the forefoot by the lisfranc joint. Muscles, tendons and ligaments support the bones and joints of the feet enabling them to withstand the entire body’s weight while walking, running and jumping. Despite this, trauma and stress can cause fractures in the foot. Extreme force is required to fracture the bones in the hind foot. The most common type of foot fracture is a stress fracture, which occurs when repeated activities produce small cracks in the bones.

Types of foot fractures

Foot fractures can involve different bones and joints and are classified into several types:

• Calcaneal fractures: This type affects the heel bone and occurs mostly as a result of high-energy collisions. It can cause disabling injuries and if the subtalar joint is involved it is considered a severe fracture.
• Talar fractures: The talus bone helps to transfer weight and forces across the joint. Talus fractures usually occur at the neck or mid portion of the talus.
• Navicular fractures: Navicular fractures are rare and include mostly stress fractures that occur with sports activities, such as running and gymnastics, as a result of repeated loading on the foot.
• Lisfranc fractures: This type of fracture occurs due to excessive loading on the foot, which leads to stretching or tearing of the midfoot ligaments.

Causes

Foot fractures commonly occur as a result of a fall, motor vehicle accident, dropping a heavy object on your foot, or from overuse such as with sports.

Symptoms

The common symptoms of a foot fracture include pain, bruising, tenderness, swelling, deformity and inability to bear weight.

Diagnosis

Your doctor diagnoses a foot fracture by reviewing your medical history and performing a thorough physical examination of your foot. Imaging tests such as X-rays, MRI or CT scan may be ordered to confirm the diagnosis. Navicular fractures can be especially difficult to diagnose without imaging tests.

Treatment

Treatment depends on the type of fracture sustained. For mild fractures, nonsurgical treatment is advised and includes rest, ice, compression, and elevation of the foot. Your doctor may suggest a splint or cast to immobilize the foot. For more severe fractures, surgery will be required to align, reconstruct or fuse the joints. Bone fragments may be held together with plates and screws.

Physical therapy may be recommended to improve range of motion and strengthen the foot muscles. Weight bearing however should be a gradual process with the help of a cane or walking boot.

The calcaneus or heel bone is a large bone found on the rear part of the foot. The calcaneus connects with the talus and cuboid bones to form the subtalar joint of the foot. A fracture is a break in a bone from trauma or various disease conditions. The types of fracture to the calcaneus depend on the severity and include stable fractures, displaced fractures, open fractures, closed fractures and comminuted fractures.

A fracture of the calcaneus is most commonly due to a traumatic event such as falling from a height, twisting injury, motor accidents, sports injuries and ankle sprain.

Fracture of the calcaneus is considered serious and can cause longstanding problems if not treated correctly. Stiffness and pain in the joint and arthritis are commonly reported risks of a calcaneal fracture.

The commonly seen signs and symptoms of calcaneal fractures are

• Pain in the heel
• Swelling in the heel
• Bruises in the heel
• Inability to walk or bear weight on the foot

The evaluation of the calcaneal fracture is done by imaging i.e., X-ray and CT scan. Based on the severity of the fracture, the doctor recommends the plan of treatment.

Calcaneal fractures are treated based on the type of fracture and extent of soft tissue damage.

• Nonsurgical treatment
  • Rest, ice, compression, and elevation (R.I.C.E.) – is the most commonly used treatment option. Staying off (resting) the injured foot can heal the fracture to a great extent. Covering the affected area with ice packs over a towel reduces swelling and pain. Compression stockings and elastic bandages can also aid in healing the pain. Positioning the feet above the level of heart reduces swelling.
  • Immobilization – Casting the injured foot prevents the fractured bone from moving. Walking with the help of crutches is advisable to avoid bearing body weight until healing has occurred.
• Surgical treatment
  • Open reduction and internal fixation – This surgery involves putting the bone fragments back together with metal plates and screws to reposition them and set them to normal alignment.
  • Percutaneous screw fixation – This is the best preferred treatment in cases where the bone pieces are large. The bone can either be pushed or pulled to set into place without making a large incision. Metal screws are then inserted and fixed through small incisions to hold the bone pieces together.

Rehabilitation

Irrespective of the treatment procedure, the patient is recommended to undergo physiotherapy and practice simple exercises regularly to help restore function. This would help the muscles to gain flexibility and after complete recovery, the patient can resume their daily living with normal activities.

Tarsometatarsal joint refers to the region found in the middle of the foot. It is also called as Lisfranc joints. It is a junction between the tarsal bones (group of seven articulating bones in the foot) and metatarsal bones (a group of five long bones in the foot). A deformity in the tarsometatarsal region can be due to arthritis and traumatic motor accidents.

Tarsometatarsal arthritis is characterised by pain, functional impairment and midfoot instability. The appearance of bruises and swelling on the dorsal side of the midfoot are the commonly observed symptoms. The doctor will first examine the physical condition of the foot by inspection and palpation (feeling with hands). You may be advised to get an X-ray taken. You might also be sent to get a CT or MRI scan done to provide more information about your condition.

The early stages of injury can be treated by analgesics, steroid injections and by wearing special footwear or casts. Tarsometatarsal joint fusion is recommended if all the non-surgical procedures fail to show efficacy in treating the injury.