Overview
The Achilles tendon is a conjoined tendon composed of the gastrocnemius and soleus muscles with occasional contribution from the plantaris muscle, and it inserts on the calcaneal tuberosity. The plantaris muscle is absent in 6% to 8% of individuals. The Achilles tendon is approximately 15-cm long and is the largest and strongest tendon in the human body. The tendon spirals approximately 90? from its origin to its insertion and this twisting produces an area of stress approximately 2- to 5-cm proximal to its insertion. The tendon has no true synovial sheath; instead it is wrapped in a paratenon. The Achilles tendon experiences the highest loads of any tendon in the body, and bears tensile loads up to 10 times body weight during athletic activities. The tendon most commonly ruptures in a region 2- to 6-cm proximal to its insertion.
Causes
The Achilles tendon is a strong bands of fibrous connective tissue that attaches the calf muscle to the heel bone. When the muscle contracts, the tendon transmits the power of this contraction to the heel bone, producing movement. The Achilles tendon ruptures because the load applied to it is greater than the tendon's ability to withstand that load. This usually occurs as a result of a sudden, quick movement where there is a forceful stretch of the tendon or a contraction of the muscles eg: jumping, sprinting, or pushing off to serve in tennis. This occurs most often in sports that require a lot of stopping and starting (acceleration-deceleration sports) such as tennis, basketball, netball and squash. The Achilles tendon is on average 15cm in length. Most ruptures occur 2-6cm above where the tendon inserts into the heel bone. This is the narrowest portion of the Achilles tendon and is also the area with the poorest blood supply. achilles tendon rupture is most common when the muscles and tendon have not been adequately stretched and warmed up prior to exercise, or when the muscles are fatigued. the Achilles tendon has a poor blood supply, which makes it susceptible to injury and slow to heal after injury. During exercise the amount of blood able to travel to the tendon is decreased, further increasing the risk of rupture. Most experts agree that there are no warning signs of an impending rupture. However, frequent episodes of Achilles tendonitis (tendon inflammation) can weaken the tendon and make it more susceptible to rupture.
Symptoms
Many people say that a ruptured Achilles feels like ?being shot in the heel?, if you can imagine how enjoyable that feels. You may hear a snap sound or feel a sudden sharp pain when the tendon tears. After a few moments, the pain settles and the back of the lower leg aches. You can walk and bear weight, but you may find it difficult to point the foot downward or push off the ground on the affected side. You will be unable to stand on tiptoe. Bruising and swelling are likely, and persistent pain will be present. Similar symptoms may be caused by an inflamed Achilles tendon (Achilles tendonitis), a torn calf muscle, arthritis of the ankle, or deep vein thrombosis in the calf, so an MRI or ultrasound scan will likely be used to diagnose your condition.
Diagnosis
A typical history as detailed above together with positive clinical examination usually will clinch the diagnosis. In an acute rupture, one can usually feel the gap in the tendon from the rupture. There may be swelling or bruising around the ankle and foot of the injured leg. With the patient lying on the tummy (prone position) with the knee flexed, the examiner should see the ankle and foot flex downwards (plantarward) when squeezing the calf muscles. If there is no movement in the ankle and foot on squeezing the calf muscle, this implies that the calf muscle is no longer attached to the heel bone due to a complete Achilles tendon rupture.
Non Surgical Treatment
Medical therapy for a patient with an Achilles tendon rupture consists of rest, pain control, serial casting, and rehabilitation to maximize function. Ongoing debate surrounds the issue of whether medical or surgical therapy is more appropriate for this injury. Conservative management of Achilles tendinosis and paratenonitis includes the following. Physical therapy. Eccentric exercises are the cornerstone of strengthening treatment, with most patients achieving 60-90% pain relief. Orthotic therapy in Achilles tendinosis consists of the use of heel lifts. Nonsteroidal anti-inflammatory drugs (NSAIDs). Tendinosis tends to be less responsive than paratenonitis to NSAIDs. Steroid injections. Although these provide short-term relief of painful symptoms, there is concern that they can weaken the tendon, leading to rupture. Vessel sclerosis. Platelet-rich plasma injections. Nitric oxide. Shock-wave therapy.
Surgical Treatment
Operative treatment of Achilles tendon ruptures involves opening the skin and identifying the torn tendon. This is then sutured together to create a stable construct. This can be performed through a standard Achilles tendon repair technique or through a mini-incision technique (to read about the different types of techniques, look under ?Procedure? in Achilles Tendon Repair). By suturing the torn tendon ends together, they maintain continuity and can be mobilized more quickly. However, it is critical to understand that the return to normal activities must wait until adequate healing of the tendon has occurred. The potential advantages of an open repair of the Achilles tendon include, faster recovery, this means that patients will lose less strength. Early Range of Motion. They are able to move the ankle earlier so it is easier to regain motion. Lower Re-rupture Rate. The re-rupture rate may be significantly lower in operatively treated patients (2-5%) compared to patients treated non-operatively (8-15%). The main disadvantage of an open repair of the Achilles tendon rupture is the potential for a wound-healing problem which could lead to a deep infection that is difficult to eradicate, or a painful scar.
The Achilles tendon is a conjoined tendon composed of the gastrocnemius and soleus muscles with occasional contribution from the plantaris muscle, and it inserts on the calcaneal tuberosity. The plantaris muscle is absent in 6% to 8% of individuals. The Achilles tendon is approximately 15-cm long and is the largest and strongest tendon in the human body. The tendon spirals approximately 90? from its origin to its insertion and this twisting produces an area of stress approximately 2- to 5-cm proximal to its insertion. The tendon has no true synovial sheath; instead it is wrapped in a paratenon. The Achilles tendon experiences the highest loads of any tendon in the body, and bears tensile loads up to 10 times body weight during athletic activities. The tendon most commonly ruptures in a region 2- to 6-cm proximal to its insertion.
Causes
The Achilles tendon is a strong bands of fibrous connective tissue that attaches the calf muscle to the heel bone. When the muscle contracts, the tendon transmits the power of this contraction to the heel bone, producing movement. The Achilles tendon ruptures because the load applied to it is greater than the tendon's ability to withstand that load. This usually occurs as a result of a sudden, quick movement where there is a forceful stretch of the tendon or a contraction of the muscles eg: jumping, sprinting, or pushing off to serve in tennis. This occurs most often in sports that require a lot of stopping and starting (acceleration-deceleration sports) such as tennis, basketball, netball and squash. The Achilles tendon is on average 15cm in length. Most ruptures occur 2-6cm above where the tendon inserts into the heel bone. This is the narrowest portion of the Achilles tendon and is also the area with the poorest blood supply. achilles tendon rupture is most common when the muscles and tendon have not been adequately stretched and warmed up prior to exercise, or when the muscles are fatigued. the Achilles tendon has a poor blood supply, which makes it susceptible to injury and slow to heal after injury. During exercise the amount of blood able to travel to the tendon is decreased, further increasing the risk of rupture. Most experts agree that there are no warning signs of an impending rupture. However, frequent episodes of Achilles tendonitis (tendon inflammation) can weaken the tendon and make it more susceptible to rupture.
Symptoms
Many people say that a ruptured Achilles feels like ?being shot in the heel?, if you can imagine how enjoyable that feels. You may hear a snap sound or feel a sudden sharp pain when the tendon tears. After a few moments, the pain settles and the back of the lower leg aches. You can walk and bear weight, but you may find it difficult to point the foot downward or push off the ground on the affected side. You will be unable to stand on tiptoe. Bruising and swelling are likely, and persistent pain will be present. Similar symptoms may be caused by an inflamed Achilles tendon (Achilles tendonitis), a torn calf muscle, arthritis of the ankle, or deep vein thrombosis in the calf, so an MRI or ultrasound scan will likely be used to diagnose your condition.
Diagnosis
A typical history as detailed above together with positive clinical examination usually will clinch the diagnosis. In an acute rupture, one can usually feel the gap in the tendon from the rupture. There may be swelling or bruising around the ankle and foot of the injured leg. With the patient lying on the tummy (prone position) with the knee flexed, the examiner should see the ankle and foot flex downwards (plantarward) when squeezing the calf muscles. If there is no movement in the ankle and foot on squeezing the calf muscle, this implies that the calf muscle is no longer attached to the heel bone due to a complete Achilles tendon rupture.
Non Surgical Treatment
Medical therapy for a patient with an Achilles tendon rupture consists of rest, pain control, serial casting, and rehabilitation to maximize function. Ongoing debate surrounds the issue of whether medical or surgical therapy is more appropriate for this injury. Conservative management of Achilles tendinosis and paratenonitis includes the following. Physical therapy. Eccentric exercises are the cornerstone of strengthening treatment, with most patients achieving 60-90% pain relief. Orthotic therapy in Achilles tendinosis consists of the use of heel lifts. Nonsteroidal anti-inflammatory drugs (NSAIDs). Tendinosis tends to be less responsive than paratenonitis to NSAIDs. Steroid injections. Although these provide short-term relief of painful symptoms, there is concern that they can weaken the tendon, leading to rupture. Vessel sclerosis. Platelet-rich plasma injections. Nitric oxide. Shock-wave therapy.
Surgical Treatment
Operative treatment of Achilles tendon ruptures involves opening the skin and identifying the torn tendon. This is then sutured together to create a stable construct. This can be performed through a standard Achilles tendon repair technique or through a mini-incision technique (to read about the different types of techniques, look under ?Procedure? in Achilles Tendon Repair). By suturing the torn tendon ends together, they maintain continuity and can be mobilized more quickly. However, it is critical to understand that the return to normal activities must wait until adequate healing of the tendon has occurred. The potential advantages of an open repair of the Achilles tendon include, faster recovery, this means that patients will lose less strength. Early Range of Motion. They are able to move the ankle earlier so it is easier to regain motion. Lower Re-rupture Rate. The re-rupture rate may be significantly lower in operatively treated patients (2-5%) compared to patients treated non-operatively (8-15%). The main disadvantage of an open repair of the Achilles tendon rupture is the potential for a wound-healing problem which could lead to a deep infection that is difficult to eradicate, or a painful scar.