IraRiegler's diary

I do my thing and you do yours. I am not present in this planet to live up to your dreams, so you're not in this world to live up to mine. You're you and I'm I, and just in case by chance we find one another, its glorious. If it is not, it can't be helped

Fallen Arches What To Look For

Overview

Flat Feet

Fallen arches, also called flat feet or pes planus, is a condition in which the entire bottom of the foot touches the ground when a person is standing. A normal foot has an arch between the heel and the ball of the foot. Fallen arches are typically an acquired condition, though flat feet may be present from childhood if the arch never developed in the first place. In some cases, usually those in which the arch never developed, flat feet are not a cause for concern. If they develop in adulthood, however, causing a rigid flat foot, the condition is usually accompanied by pain and can cause serious health issues.

Causes

Over-pronation is a common biomechanical problem that occurs when the arches collapse while walking or standing. This condition hampers our natural walking pattern, causing an imbalance, and leading to wear and tear in other parts of the body with every step we take. Whether you suffer from over-pronation like most of the population, or you have a true flat foot, in both cases your poor walking pattern may contribute to a range of different complaints. As we age, poor aligment of the feet causes very common conditions such as heel pain or knee pain. Over-pronation has different causes. Obesity, pregnancy, age or repetitive pounding on a hard surface can weaken the arch, leading to over-pronation. Over-pronation is also very common with athletes, especially runners, who most of them nowadays use orthotics inside their shoes.

Symptoms

Some people have fallen arches, and they aren?t even aware of it, fallen arches are sometimes asymptomatic and do not always cause pain. However, for others, the following symptoms may be present. Foot pain, particularly in the arches or heels, leg or back pain, feet feel tired quickly, swelling in the feet and difficulty moving the feet.

Diagnosis

Many medical professionals can diagnose a flat foot by examining the patient standing or just looking at them. On going up onto tip toe the deformity will correct when this is a flexible flat foot in a child with lax joints. Such correction is not seen in the adult with a rigid flat foot. An easy and traditional home diagnosis is the "wet footprint" test, performed by wetting the feet in water and then standing on a smooth, level surface such as smooth concrete or thin cardboard or heavy paper. Usually, the more the sole of the foot that makes contact (leaves a footprint), the flatter the foot. In more extreme cases, known as a kinked flatfoot, the entire inner edge of the footprint may actually bulge outward, where in a normal to high arch this part of the sole of the foot does not make contact with the ground at all.

Can you fix a fallen arch?

Non Surgical Treatment

Treatment often consists of giving the affected foot support from underneath so that the strain is taken off it (by the use of insoles or support pads) and so symptoms are relieved. A specialist in this problem is known as a podiatrist and these do work in the NHS - ask you father's doctor whether his condition is bad enough to warrant a referral to such a specialist.

Surgical Treatment

Adult Acquired Flat Foot

Surgery for flat feet is separated into three kinds: soft tissue procedures, bone cuts, and bone fusions. Depending on the severity of the flat foot, a person?s age, and whether or not the foot is stiff determines just how the foot can be fixed. In most cases a combination of procedures are performed. With flexible flat feet, surgery is geared at maintaining the motion of the foot and recreating the arch. Commonly this may involve tendon repairs along the inside of the foot to reinforce the main tendon that lifts the arch. When the bone collapse is significant, bone procedures are included to physically rebuild the arch, and realign the heel. The presence of bunions with flat feet is often contributing to the collapse and in most situations requires correction. With rigid flat feet, surgery is focused on restoring the shape of the foot through procedures that eliminate motion. In this case, motion does not exist pre-operatively, so realigning the foot is of utmost importance. The exception, are rigid flat feet due to tarsal coalition (fused segment of bone) in the back of the foot where freeing the blockage can restore function.

Prevention

Sit up straight in a chair with your feet flat on the ground. Scrunch up the toes of one foot as if you are trying to grab hold of the floor then use your toes to drag your foot a small distance forwards. Do this a couple of times on each foot, but don?t use your leg muscles to push your foot forward -- the movement should come solely from the muscles in your feet. Sit in a chair and place a cleaning cloth, towel or small ball on the floor at your feet. Use the toes of one foot to grasp the object and lift it off the floor. This action will require you to clench your toes and contract your arch. Once you have lifted the object a little way off the floor, try to throw it in the air and catch it by stretching your toes and arch out and upwards. Repeat the exercise several times on both feet. Sit on the floor with your legs straight out in front of you then bend your knees out to either side and place the soles of your feet together so your legs form a diamond. Hold on to your ankles and, keeping your heels together at all times, separate your feet so your toes point out to either side. Open and close your feet in this way several times, making sure your little toes stay in contact with the floor throughout the exercise. Starting in the same position, try separating your heels, keeping your toes together at all times.

What Are The Major Causes Of Heel Serious Pain

Overview

Heel Pain

The heel is a padded cushion of fatty tissue around the heel bone (the calcaneus) that holds its shape despite the pressure of body weight and movement. It serves to protect the structures of the foot, including the calcaneus, muscles and ligaments. Heel pain is a very common foot complaint. Anyone can suffer from heel pain, but certain groups seem to be at increased risk, including Middle-aged men and women, Physically active people, People who are overweight or obese, People who are on their feet for long periods of time, Children aged between eight and 13 years (particularly boys), Women during pregnancy.

Causes

The two major causes of heel pain are plantar fasciitis and achilles tendinitis. The easiest way to figure out which one is causing your pain is by location. Generally speaking, if the pain is under your heel bone it is likely plantar fasciitis. If the pain is found at the back of the heel, in the achilles or toward the base of the achilles (the long cord that extends from your calf to your heel bone), then it is likely achilles tendinitis.

Symptoms

The heel can be painful in many different ways, depending on the cause. Plantar fasciitis commonly causes intense heel pain along the bottom of the foot during the first few steps after getting out of bed in the morning. This heel pain often goes away once you start to walk around, but it may return in the late afternoon or evening. Although X-ray evidence suggests that about 10% of the general population has heels spurs, many of these people do not have any symptoms. In others, heel spurs cause pain and tenderness on the undersurface of the heel that worsen over several months. In a child, this condition causes pain and tenderness at the lower back portion of the heel. The affected heel is often sore to the touch but not obviously swollen. Bursitis involving the heel causes pain in the middle of the undersurface of the heel that worsens with prolonged standing and pain at the back of the heel that worsens if you bend your foot up or down. Pump bump, this condition causes a painful enlargement at the back of the heel, especially when wearing shoes that press against the back of the heel. Heel bruises, like bruises elsewhere in the body, may cause pain, mild swelling, soreness and a black-and-blue discoloration of the skin. Achilles tendonitis, this condition causes pain at the back of the heel where the Achilles tendon attaches to the heel. The pain typically becomes worse if you exercise or play sports, and it often is followed by soreness, stiffness and mild swelling. A trapped nerve can cause pain, numbness or tingling almost anywhere at the back, inside or undersurface of the heel. In addition, there are often other symptoms, such as swelling or discoloration - if the trapped nerve was caused by a sprain, fracture or other injury.

Diagnosis

A podiatrist (doctor who specializes in the evaluation and treatment of foot diseases) will carry out a physical examination, and ask pertinent questions about the pain. The doctor will also ask the patient how much walking and standing the patient does, what type of footwear is worn, and details of the his/her medical history. Often this is enough to make a diagnosis. Sometimes further diagnostic tests are needed, such as blood tests and imaging scans.

Non Surgical Treatment

When consulting a doctor about heel pain, a patient can expect to be questioned about their level of pain, how long they?ve been experiencing it, and which activities aggravate or alleviate the condition. The doctor may order x-rays, a physical therapy regimen, or refer the afflicted individual to an orthopedic specialist for further examination. The doctor may attempt to recreate conditions that cause the heel pain to flare up in order to study reaction and cause in the patient, but this will be temporary and the doctor will stop this test at the request of the patient. A patient with heel pain may also be fitted with special inserts for their shoes to help correct arch and heel problems that cause pain. Heel problems can range from the mildly irritating to the nearly devastating, but proper prevention in care will help keep each step pain free. Advanced orthopedics, pain management, and technologically-honed surgical techniques ensure that no patient needs to suffer with the discomfort of heel pain and the restrictions it imposes on an active lifestyle.

Surgical Treatment

Although most patients with plantar fasciitis respond to non-surgical treatment, a small percentage of patients may require surgery. If, after several months of non-surgical treatment, you continue to have heel pain, surgery will be considered. Your foot and ankle surgeon will discuss the surgical options with you and determine which approach would be most beneficial for you. No matter what kind of treatment you undergo for plantar fasciitis, the underlying causes that led to this condition may remain. Therefore, you will need to continue with preventive measures. Wearing supportive shoes, stretching, and using custom orthotic devices are the mainstay of long-term treatment for plantar fasciitis.

bone spur on back of heel

Prevention

Foot Pain

Wearing real good, supportive shoes are a great way to avoid heel pain. Usually, New Balance is a good shoe to wear, just for everyday shoe gear. By wearing proper footwear and performing thorough stretches, athletes can help prevent frequent heel pain. If you are starting to get a little discomfort or pain in the feet or heel, know that pain is not normal. So if you are having pain, you should be proactive and visit our office. If you let heel pain get out of control you could run into several other problems. It is always suggested to visit a podiatrist whenever you are experiencing pain.

Shoe Raise For Leg Length Discrepancy

Overview

Surgery to shorten the longer leg. This is less involved than lengthening the shorter leg. Shortening may be done in one of two ways. Closing the growth plate of the long leg 2-3 years before growth ends (around age 11-13), letting the short leg catch up. This procedure is called an epiphysiodesis. Taking some bone from the longer leg once growth is complete to even out leg lengths. Surgery to lengthen the shorter leg. This surgery is more involved than surgery to shorten a leg. During this surgery, cuts are made in the leg bone. An external metal frame and bar are attached to the leg bone. This frame and bar slowly pull on the leg bone, lengthening it. The frame and bar must be worn constantly for months to years. When the frame and bar are removed, a leg cast is required for several months. This surgery requires careful and continued follow-up with the surgeon to be sure that healing is going well.Leg Length Discrepancy

Causes

Limb-length conditions can result from congenital disorders of the bones, muscles or joints, disuse or overuse of the bones, muscles or joints caused by illness or disease, diseases, such as bone cancer, Issues of the spine, shoulder or hip, traumatic injuries, such as severe fractures that damage growth plates.

Symptoms

The symptoms of limb deformity can range from a mild difference in the appearance of a leg or arm to major loss of function of the use of an extremity. For instance, you may notice that your child has a significant limp. If there is deformity in the extremity, the patient may develop arthritis as he or she gets older, especially if the lower extremities are involved. Patients often present due to the appearance of the extremity (it looks different from the other side).

Diagnosis

Asymmetry is a clue that a LLD is present. The center of gravity will shift to the short limb side and patients will try to compensate, displaying indications such as pelvic tilt, lumbar scoliosis, knee flexion, or unilateral foot pronation. Asking simple questions such as, "Do you favor one leg over the other?" or, "Do you find it uncomfortable to stand?" may also provide some valuable information. Performing a gait analysis will yield some clues as to how the patient compensates during ambulation. Using plantar pressure plates can indicate load pressure differences between the feet. It is helpful if the gait analysis can be video-recorded and played back in slow motion to catch the subtle aspects of movement.

Non Surgical Treatment

The way in which we would treat a LLD would depend on whether we have an anatomical or functional difference. To determine which one is causing the LLD you will need to get your legs measured. This is the easiest way to determine if it is anatomical or functional. With a functional LLD we must first determine the cause and treat the cause. Should the cause be one that is not correctable then we may need to treat the LLD as if it were an anatomical or may have to treat the opposite leg to improve one's gait. As for the anatomical LLD, we may start off with a heel lift only in the shoe and follow up to see if we will need to put the lift full sole on the bottom of the shoe. This is determined by the affects that a heel lift in one shoe may have on that knee. Should the LLD be more than 1/4 inch we usually recommend starting between 1/8 inch to 1/4 inch less than the actual amount and let the body adjust to the change and then raise up to the measured amount later.

LLL Shoe Insoles

height increase exercises

Surgical Treatment

Surgical lengthening of the shorter extremity (upper or lower) is another treatment option. The bone is lengthened by surgically applying an external fixator to the extremity in the operating room. The external fixator, a scaffold-like frame, is connected to the bone with wires, pins or both. A small crack is made in the bone and tension is created by the frame when it is "distracted" by the patient or family member who turns an affixed dial several times daily. The lengthening process begins approximately five to ten days after surgery. The bone may lengthen one millimeter per day, or approximately one inch per month. Lengthening may be slower in adults overall and in a bone that has been previously injured or undergone prior surgery. Bones in patients with potential blood vessel abnormalities (i.e., cigarette smokers) may also lengthen more slowly. The external fixator is worn until the bone is strong enough to support the patient safely, approximately three months per inch of lengthening. This may vary, however, due to factors such as age, health, smoking, participation in rehabilitation, etc. Risks of this procedure include infection at the site of wires and pins, stiffness of the adjacent joints and slight over or under correction of the bone?s length. Lengthening requires regular follow up visits to the physician?s office, meticulous hygiene of the pins and wires, diligent adjustment of the frame several times daily and rehabilitation as prescribed by your physician.

Leg Length Discrepancy Shoe Lifts

Overview

Having one leg shorter than the other is a common physical condition. It has two primary causes--structural or functional problems. Structural differences in length can be the result of growth defect, previous injuries or surgeries. Functional differences in length can result from altered mechanics of the feet, knee, hip and/or pelvis. These altered mechanics from functional leg length discrepancy often stem from having an unbalanced foundation.Leg Length Discrepancy

Causes

Leg length discrepancies can be caused by: hip and knee replacements, lower limb injuries, bone diseases, neuromuscular issues and congenital problems. Although discrepancies of 2 cm or less are most common, discrepancies can be greater than 6 cm. People who have LLD tend to make up for the difference by over bending their longer leg or standing on the toes of their shorter leg. This compensation leads to an inefficient, up and down gait, which is quite tiring and over time can result in posture problems as well as pain in the back, hips, knees and ankles.

Symptoms

The most common symptom of all forms of LLD is chronic backache. In structural LLD the sufferer may also experience arthritis within the knee and hip are, flank pain, plantar fasciitis and metatarsalgia all on the side that is longer. Functional LLD sufferers will see similar conditions on the shorter side.

Diagnosis

Leg length discrepancy may be diagnosed during infancy or later in childhood, depending on the cause. Conditions such as hemihypertrophy or hemiatrophy are often diagnosed following standard newborn or infant examinations by a pediatrician, or anatomical asymmetries may be noticed by a child's parents. For young children with hemihypertophy as the cause of their LLD, it is important that they receive an abdominal ultrasound of the kidneys to insure that Wilm's tumor, which can lead to hypertrophy in the leg on the same side, is not present. In older children, LLD is frequently first suspected due to the emergence of a progressive limp, warranting a referral to a pediatric orthopaedic surgeon. The standard workup for LLD is a thorough physical examination, including a series of measurements of the different portions of the lower extremities with the child in various positions, such as sitting and standing. The orthopaedic surgeon will observe the child while walking and performing other simple movements or tasks, such as stepping onto a block. In addition, a number of x-rays of the legs will be taken, so as to make a definitive diagnosis and to assist with identification of the possible etiology (cause) of LLD. Orthopaedic surgeons will compare x-rays of the two legs to the child's age, so as to assess his/her skeletal age and to obtain a baseline for the possibility of excessive growth rate as a cause. A growth chart, which compares leg length to skeletal age, is a simple but essential tool used over time to track the progress of the condition, both before and after treatment. Occasionally, a CT scan or MRI is required to further investigate suspected causes or to get more sophisticated radiological pictures of bone or soft tissue.

Non Surgical Treatment

In order to measure for correction, use a series of blocks or sheets of firm material (cork or neoprene) of varying thickness, e.g., 1/8", 1/4", and 1/2". Place them under the short limb, either under the heel or the entire foot, depending on the pathology, until the patient feels most balanced. Usually you will not be able to correct for the full amount of the imbalance at the outset. The longer a patient has had the LLD, the less likely he or she will be able to tolerate a full correction immediately. This is a process of incremental improvements. 2 inch External Platform Lift Bear in mind that the initial lift may need to be augmented as the patient's musculoskeletal system begins to adjust. It is often recommended that the initial buildup should be 50 percent of the total. After a suitable break-in period, one month say, another 25 percent can be added. If warranted, the final 25 percent can be added a month later. Once you determine how much lift the patient can handle, you then need to decide how to best apply it. There are certain advantages and disadvantages to using either internal or external heel lifts.

Leg Length

shoe lifts for uneven legs

Surgical Treatment

Surgery to shorten the longer leg. This is less involved than lengthening the shorter leg. Shortening may be done in one of two ways. Closing the growth plate of the long leg 2-3 years before growth ends (around age 11-13), letting the short leg catch up. This procedure is called an epiphysiodesis. Taking some bone from the longer leg once growth is complete to even out leg lengths. Surgery to lengthen the shorter leg. This surgery is more involved than surgery to shorten a leg. During this surgery, cuts are made in the leg bone. An external metal frame and bar are attached to the leg bone. This frame and bar slowly pull on the leg bone, lengthening it. The frame and bar must be worn constantly for months to years. When the frame and bar are removed, a leg cast is required for several months. This surgery requires careful and continued follow-up with the surgeon to be sure that healing is going well.

What Is Mortons Neuroma

Overview

intermetatarsal neuromaMorton?s neuroma is inflammation, thickening, or enlargement of the nerve between the bones of the toes (metatarsal bones). The condition is also called intermetatarsal neuroma. The thickening is usually found between bones of the third and fourth toes of the foot, but sometimes it may develop between the second and third toes. It occurs when the medial plantar nerve near the bones of those toes becomes compressed or irritated, possibly because the metatarsal bones press against the nerve in the narrow gap between the toes. If left untreated, Morton?s neuroma can cause a sharp, burning, or shooting pain that often gets worse over time. The pain becomes worse when a person walks or stands on the ball of the foot. Sometimes the pain reaches the toes next to the neuroma and a sensation of tingling or numbness is felt.

Causes

A Morton's neuroma commonly occurs due to repetitive weight bearing activity (such as walking or running) particularly when combined with tight fitting shoes or excessive pronation of the feet (i.e. "flat-feet"). The condition is also more common in patients with an unstable forefoot allowing excessive movement between the metatarsal bones. A Morton's neuroma can also occur due to certain foot deformities, trauma to the foot, or the presence of a ganglion or inflamed bursa in the region which may place compressive forces on the nerve.

Symptoms

Symptoms associated with a neuroma include a dull burning sensation radiating towards the toes, a cramping feeling, or even a stinging, tingling sensation that can be described as being similar to an electric shock. It is often worse when wearing shoes with most people finding the pain disappears when removing their shoes.

Diagnosis

To diagnose Morton's neuroma the podiatrist commonly palpates the area to elicit pain, squeezing the toes from the side. Next he or she may try to feel the neuroma by pressing a thumb into the third interspace. The podiatrist then tries to elicit Mulder's sign, by palpating the affected interspace with one hand and squeezing the entire foot at the same time with the other hand. In many cases of Morton's neuroma, this causes an audible click, known as Mulder's sign. An x-ray should be taken to ensure that there is not a fracture. X-rays also can be used to examine the joints and bone density, ruling out arthritis (particularly rheumatoid arthritis and osteoarthritis).

Non Surgical Treatment

Sclerosing alcohol injections are an increasingly available treatment alternative if the above management approaches fail. Dilute alcohol (4%) is injected directly into the area of the neuroma, causing toxicity to the fibrous nerve tissue. Frequently, treatment must be performed 2-4 times, with 1-3 weeks between interventions. An 60-80% success rate has been achieved in clinical studies, equal to or exceeding the success rate for surgical neurectomy with fewer risks and less significant recovery. If done with more concentrated alcohol under ultrasound guidance, the success rate is considerably higher and fewer repeat procedures are needed. Radio Frequency Ablation is also used in the treatment of Morton's Neuroma The outcomes appear to be equally or more reliable than alcohol injections especially if the procedure is done under ultrasound guidance.interdigital neuroma

Surgical Treatment

The above measures are often sufficient to resolve Morton?s Neuroma. Should the condition persist or worsen despite these efforts, surgery may be recommended to remove the Neuroma. The surgery requires only a short recovery period, though permanent numbness in the affected toes can result, so such surgery is generally used as a last resort.

Prevention

Although the exact causes of neuromas are not completely known, the following preventive steps may help. Make sure your exercise shoes have enough room in the front part of the shoe and that your toes are not excessively compressed. Wear shoes with adequate padding in the ball of the foot. Avoid prolonged time in shoes with a narrow toe box or excessive heel height (greater than two inches).

Leg Length Discrepancy And Shoe Lifts

There are two different types of leg length discrepancies, congenital and acquired. Congenital implies you are born with it. One leg is anatomically shorter than the other. Through developmental periods of aging, the human brain picks up on the walking pattern and recognizes some difference. The body typically adapts by dipping one shoulder to the "short" side. A difference of less than a quarter inch is not blatantly excessive, require Shoe Lifts to compensate and ordinarily doesn't have a profound effect over a lifetime.

Shoe Lifts

Leg length inequality goes typically undiscovered on a daily basis, yet this condition is very easily corrected, and can reduce a number of incidents of back pain.

Treatment for leg length inequality commonly consists of Shoe Lifts. Many are economical, generally being under twenty dollars, in comparison to a custom orthotic of $200 or more. When the amount of leg length inequality begins to exceed half an inch, a whole sole lift is generally the better choice than a heel lift. This prevents the foot from being unnecessarily stressed in an abnormal position.

Back pain is the most widespread ailment afflicting men and women today. Over 80 million people are affected by back pain at some point in their life. It's a problem that costs businesses vast amounts of money each year as a result of lost time and output. Fresh and more effective treatment methods are constantly sought after in the hope of reducing the economic influence this condition causes.

Leg Length Discrepancy Shoe Lift

People from all corners of the earth experience foot ache due to leg length discrepancy. In a lot of these situations Shoe Lifts might be of very helpful. The lifts are capable of alleviating any discomfort and pain in the feet. Shoe Lifts are recommended by countless experienced orthopaedic practitioners".

So as to support the body in a healthy and balanced fashion, feet have a significant part to play. In spite of that, it is sometimes the most neglected region in the body. Many people have flat-feet meaning there may be unequal force placed on the feet. This causes other areas of the body like knees, ankles and backs to be affected too. Shoe Lifts ensure that the right posture and balance are restored.

Guidelines On How To Identify Heel Spur

Inferior Calcaneal Spur

Overview

Bone spurs (retrocalcaneal spur, or exostosis) can develop not only on the back of the heel, but also on the toes, mainly around the fifth (small) toe. Most often, they occur next to the toenail on the outside of the toe; on the inside of the toe near the tip, where the fifth toe presses against the fourth toe; and on the inside of the base of the toe. Bone spurs can also occur on the sides of the toes. This is usually due to wearing shoes that are too tight in the toe box, which causes the toes to press against each other. Bone spurs may also develop in the arch area of the top of the foot; this area becomes painful when you tie your shoelaces tightly or exert other pressure on that part of the foot. Formation of spurs in this area is often associated with arthritis.

Causes

Diseases such as arthritis may lead to chronic inflammation in the tissue surrounding the heel and over time this can lead to the accumulation of calcium deposits. Ankylosing spondylitis, for example, is one particular form of arthritis that frequently develops along with heel spurs. This condition can damage bones all over the body and even lead to the fusion of spinal vertebrae.

Inferior Calcaneal Spur

Symptoms

Major symptoms consist of pain in the region surrounding the spur, which typically increases in intensity after prolonged periods of rest. Patients may report heel pain to be more severe when waking up in the morning. Patients may not be able to bear weight on the afflicted heel comfortably. Running, walking, or lifting heavy weight may exacerbate the issue.

Diagnosis

The proper diagnosis of a heel spur often requires an X-ray. To make this process as convenient for his patients as possible, most clinics have an on-site digital X-ray and diagnostic ultrasound machines. This can make it unnecessary for patients to visit diagnostic imaging centers, allowing patients to receive more expedient treatment.

Non Surgical Treatment

The key for the proper treatment of heel spurs is determining what is causing the excessive stretching of the plantar fascia. When the cause is over-pronation (flat feet), an orthotic with rearfoot posting and longitudinal arch support is an effective device to reduce the over-pronation, and allow the condition to heal. Other common treatments include stretching exercises, losing weight, wearing shoes that have a cushioned heel that absorbs shock, and elevating the heel with the use of a heel cradle, heel cup, or orthotic. Heel cradles and heel cups provide extra comfort and cushion to the heel, and reduce the amount of shock and shear forces experienced from everyday activities.

Surgical Treatment

Surgery, which is a more radical treatment, can be a permanent correction to remove the spur itself. If your doctor believes that surgery is indicated, he will recommend an operation - but only after establishing that less drastic methods of treatment are not successful.