Central Florida Foot & Ankle Center, LLC
101 6th Street N.W.
Winter Haven, FL 33881
Phone: 863-299-4551
www.FLFootandAnkle.com

One of the most common conditions of the first metatarsophalangeal joint (MPJ) is a condition known as hallux limitus. This is defined as a less than normal range of motion of the joint. Normal range of motion is generally considered to be upwards of 65 degrees of dorsiflexion, with some references stating numbers even higher than that. Symptoms of hallux limitus may include achy, throbbing, or dull pain in the first metatarsophalangeal joint, exacerbated by activity. It may also cause compensatory changes in the other joints of the foot, which can lead to the development of pain or arthritis in adjacent joints. A palpable bump may be present on the top of the foot at the joint level, sometimes referred to as a dorsal bunion. When the range of motion is measured at less than 10 degrees of dorsiflexion, the condition may be called hallux rigidus.
Over the years, many investigators have postulated the causes of hallux limitus. Excessive length of the first metatarsal has been considered to be a causative factor in the past, which would theoretically decrease the amount of joint space at the first MPJ, thus limiting the motion at the joint. However, researchers have disproven this as a causative factor, and it may simply be an incidental finding.
Another biomechanical etiology of hallux limitus that has been cited in the literature is the presence of a hypermobile first ray and metatarsus primus elevatus. Hypermobility of the first ray means that the first ray, which consists of the hallux (big toe), the first metatarsal and the first cuneiform, is moving during the midstance and propulsive phases of the gait cycle. This erratic movement creates instability, which leads to jamming at the first MPJ, thus decreasing the range of motion available at the joint. Metatarsus primus elevatus is a related finding, which refers to a relative elevation of the first metatarsal on the rest of the foot, which would also decrease the amount of motion available.
Other causes of hallux limitus/rigidus that have come into question over the years include osteoarthritis, direct trauma to the joint, biomechanical malalignment such as hallux valgus, and various forms of inflammatory arthritis such as rheumatoid arthritis. Regardless of the cause of hallux limitus, however, the progression of the condition is rather predictable.
Typically the condition begins with a functional decrease in range of motion, characterized by a joint that has a decreased range of motion when weight-bearing. The progresses to a structural deformity with decreased range of motion in non-weight bearing situations, and the development of cartilage damage to the joint and eventually significant pain and disability. A number of authors have attempted to categorize this progression with classification systems, which take into account both the clinical picture and the radiographic analysis of the joint.
Perhaps the most widely used classification system used for describing hallux limitus is the Regnauld classification described in 1986. This classification system involves grades I-III, and helps to communicate the destruction and limitation involved. Grade I describes a first MPJ that shows a mild limitation of dorsiflexion with a mild dorsal bump, and early evidence of osteoarthritis apparent on x-ray. In grade II hallux limitus, there is evidence of more advanced arthritis development, as well as involvement of the sesamoids apparent on x-ray. There is a greater restriction in motion, and further narrowing of the joint space. Grade III describes severe limitation of motion, extensive development of osteoarthritis include significant osteophyte formation, and possibly loose bodies within the joint known as joint mice.
Conservative treatment should always be attempted before surgical intervention for hallux limitus. Only when conservative therapy has failed does surgery become an option. Conservative therapy may include the use of non-steroidal anti-inflammatory drugs (NSAID’s) in either oral or topical forms. Some doctors will use cortisone injections as well, while others prefer to avoid the use of injectable steroids due to side effects such as atrophy of skin and soft tissues and damage to the surrounding tissues. Orthotics are typically used as well, with a modification known as the Morton’s extension, which serves to protect and accommodate the first MPJ.
Once conservative treatment has failed, surgery may be an option explored by some patients along with the treating physician. A popular option for many foot and ankle surgeons is the cheilectomy. A cheilectomy is the removal of any osteophytes from the joint. Osteophytes develop as a part of cortical hypertrophy, which results from increased pressure through the bone from jamming of the joint. The cheilectomy serves to remove these redundant pieces of bone, which typically block the hallux from moving normally over the first metatarsal head. A cheilectomy will typically double the range of motion of the joint, and serves to alleviate pain as well.
A number of modifications exist for the cheilectomy, including how much to take off of the bone, or to peroform an osteotomy (bone cut) in the first metatarsal to create a larger joint space. Some surgeons will perform a cheilectomy at both ends of the joint, removing osteophytes from the proximal phalanx of the hallux if necessary. With or without these modifications, the cheilectomy has had good results reported for early stages of hallux limitus.

One of the most common symptoms that a podiatrist will hear from their patients is that they are suffering from heel pain. This is often a chronic heel pain, that is unrelenting and not responsive to conservative treatment. Several things can cause this heel pain, including stress fractures of the calcaneus (heel bone), entrapment of a nerve running into the heel, or fractures of a heel spur. Most commonly, however, the complaint is related to plantar fasciitis.
Plantar fasciitis is a term used to describe a painful and inflamed plantar fascia, which is a thick, fibrous band of tissue running along the bottom of the foot. This band of tissue attaches to the calcaneus, which is typically where the pain is located. Pain is often worse in the morning with the first steps out of bed, or after long periods of rest, such as sitting at a desk. After the first few steps, the pain may decrease, but will get worse throughout the day with a lot of activity or standing. These are very typical symptoms of plantar fasciitis.
Because of its chronic nature, plantar fasciitis may also be referred to as plantar fasciosis, indicating the chronicity of the problem. When viewed under a microscope, the plantar fascia will show signs of degeneration and a lack of acute inflammatory cells, which is more consistent with a chronic tendinosis than with an acute inflammatory reaction. The plantar fascia will appear thickened as well. These findings all indicate that the condition is non-inflammatory, and is chronic in nature.
The exact etiology of plantar fasciitis has been the subject of debate for some time. Most evidence points towards increased traction at the calcaneus as being the cause of the pain. This increased traction has been associated with obesity, a difference in limb length, increased pronation of the foot, and many other things that increase the stress on the plantar fascia. Some believe that plantar fasciitis is partially due to periostitis of the calcaneus. The periosteum is a structure that surrounds bones and supplies blood to the bone. When this tissue becomes inflamed, regardless of the cause, it is termed periostitis.
Conservative therapy for plantar fasciitis revolves around trying to relieve the symptoms while at the same time decreasing the stress on the plantar fascia. This usually involves any combination of the following:
· Rest
· Ice
· Stretching
· Orthotics
· Physical Therapy
· Non-steroidal anti-inflammatory drugs (NSAIDs)
· Heel cups
· Night splints
· Taping
· Steroid Injections
· Advanced conservative therapies such as platelet-rich plasma injections and extracorporeal shockwave therapy
Generally speaking, conservative measures are exhausted before surgical intervention is attempted. Surgical intervention today typically involves releasing part of the plantar fascia to relieve the tension on the structure. For a long time, the only option surgically was to make a small incision into the foot and release the plantar fascia. With technological advances, new options have popped up.
One option that has become popular among foot and ankle surgeons over the past few years has been the use of Topaz to address plantar fasciitis. The Topaz procedure involves the use of radiofrequency microdebridement of the plantar fascia. The Topaz equipment is a small, pen-like device that delivers a small amount of radiofrequency to the tissues, which helps to remove some of the thickened, diseased tissue that results from chronic plantar fasciitis.
The device works by stimulating angiogenesis in the chronically diseased plantar fascia. This means that it stimulates the growth of new blood vessels. The formation of new blood vessels allows for inflammatory cells to reach the poorly vascularized plantar fascia. These inflammatory cells essentially “restart” the process from the beginning, allowing the tissues in the plantar fascia to reorganize and decrease the amount of scar tissue in the structure.
The Topaz procedure is designed to be as minimally invasive as possible. Generally, the plantar fascia can be microdebrided through small holes made in the skin with a small pin. The Topaz radiofrequency device can then be inserted into the small holes, and the plantar fascia can thus be reached without opening up the foot. These small holes created surgically are small enough to heal without the use of stitches. A small bandage can be placed onto the skin in the surgical area, and the patients can walk on the foot in a protective shoe within a few days.
Short-term and intermediate-term results of Topaz microdebridement for plantar fasciitis have shown good results, with a high percentage of success. Complications involved with open procedures are effectively eliminated from the post-operative course. Because of the avoidance of open surgery, Topaz is becoming a viable option among foot and ankle surgeons. The device has also gained acceptance for use in Achilles tendonitis.

Tarsal Tunnel Syndrome is a condition of the foot and ankle in which the tibial nerve becomes entrapped along its course. The tibial nerve is a branch of the sciatic nerve, which begins in the distal one-third of the thigh, and courses through the back of the leg underneath the deep muscles. It courses slightly medially through the deep posterior compartment of leg muscles, and enters the foot through the tarsal tunnel. The tarsal tunnel is an organized strip of fascia that has separate canals for the arteries, nerves, veins, and muscles that pass through the area. The tibial nerve divides into three branches; the medial plantar nerve, the lateral plantar nerve, and the medial calcaneal nerve. These divisions are typically found proximal to the tarsal tunnel.
In tarsal tunnel syndrome, there is an entrapment of one or more of the branches of the nerve. The entrapment can be of the tibial nerve before it divides into the three branches, which may lead to more diffuse symptoms through the foot. Tibial nerve entrapment is one of the most common nerve entrapments of the foot and ankle, along with Morton’s Neuroma and an anterior entrapment of the superficial peroneal nerve.
The etiology of tarsal tunnel syndrome is most commonly attributed to repetitive microtrauma of the fascia surrounding the nerve, secondary to a hyper-pronation syndrome. The tissue becomes inflamed, which can entrap the nerve. There may also be varicosities of the posterior tibial veins which also pass through the tarsal tunnel, causing engorgement of the veins through the tunnel, leading to increased pressure on the tibial nerve. Other causes of tarsal tunnel syndrome include direct trauma to the nerve, systemic disease that effects the nerve or the surrounding components, a space-occupying lesion such as a benign tunor of the nerve or nerve sheath, and hypertrophy of the abductor hallucis muscle, which can put additional pressure on the nerve as it enters the foot.
Symptoms of tarsal tunnel syndrome include a burning or tingling sensation in the ball of the foot or the heel, as well as numbness or paresthesia. As the condition progresses, there may be some associated muscle weakness of the intrinsic muscles of the foot. Pain that travels towards the foot or up towards the leg is characteristic of tarsal tunnel syndrome.
Diagnosis is made with clinical symptoms as well as reproducing the symptoms by tapping along the course of the nerve. This may send reproducible pain travelling towards the toes (Tinnel’s sign) or upwards towards the leg (Valleix sign). The pain may also be reproduced by everting the foot in the clinic. Nerve conduction studies may be helpful in the diagnosis and in locating the exact area of impingement, but are not always necessary.
Conservative treatment of tarsal tunnel syndrome includes removing the force that recreates pain. This may involve limiting pronation of the foot through the use of orthotics. These may offer some relief, but will only work when in use. In the case of varicosities being the cause of the problem, some may find relief with the use of compression stockings.
Tarsal tunnel syndrome is more commonly dealt with surgically. A small incision is made in the medial side of the foot, and the nerve is identified. The entrapments of the nerve may be obvious to the surgeon performing the procedure, but in many cases the entrapments are not so apparent. The nerve is freed from any sites that may be entrapped. Most commonly the two sites that are released are the flexor retinaculum and the tarsal canal of the nerves. Additionally, the nerve may become entrapped under the soleus muscle’s retinaculum, the fascia of the abductor hallucis muscle, the intermuscular septum in the foot that the nerve courses under, and the medial band of the plantar fascia. These areas may additionally freed and left open. Post-operatively, a patient undergoing nerve decompression will be non-weight bearing for two-three weeks while the skin and deep tissues heal. During this time they will be able to freely move the foot and ankle when sitting or lying down, but will require an offloading boot when walking.
Tarsal tunnel syndrome can be associated with other conditions of the foot and ankle, and can often mimic other forms of heel pain such as plantar fasciitis. If you feel as though you are experiencing symptoms of tarsal tunnel syndrome, talk to your podiatrist. They will be able to investigate and diagnose the problem.