![]() ![]() Like other bones, a navicular fracture can occur following a traumatic accident. Innersoles are used to correct any biomechanical abnormalities in the feet.The navicular bone is one of the largest bones in the foot. Strengthening exercises, using proper techniques and equipment, sports massage and correcting lower limb biomechanics are all important factors in preventing navicular stress fractures. It provides quick healing and may also be performed if an athlete requires quick healing to return to sports activities. Surgery involves fixing the fractured bone using bone screws and/or placing bone grafts. If the immobilization treatment does not work, or if the fracture is diagnosed late and/or is displaced, surgery is required. If there is no tenderness the person can start with physiotherapy and gradually return to normal activity levels. Once the cast is removed, it is imperative to check the N spot for any tenderness or pain every two weeks for about two months. If the N spot is still tender, the cast is reapplied for a further two weeks. The cast is applied for a 6 week-period and the area is examined for tenderness afterwards. The more delayed the treatment is, the more time will be required for the fracture to heal properly.įor non-displaced stress fractures, use of non-weight-bearing casts is a very effective treatment that works in about 86% of cases. Treatment:Įarly treatment gives best results. ![]() A bone scan is useful in detecting the early changes, however, a CT scan or MRI is required to get accurate details and establish a treatment plan. X-rays are no help in the initial stages. The main hurdle in navicular stress fracture management is that these are hard to diagnose early on. The area over the navicular bone (N spot) becomes tender to the touch, there may also be a mild swelling.Over time, pain sets in early with activity (even walking may initiate pain) and lasts longer (even at rest).Pain initiates with activity and diminishes at rest.It starts as a diffuse dull pain on the upper surface of the mid foot, which may spread to the inner side of the food along the arch. For this reason, an undue stress or excessive strain leads to the formation of stress fractures (micro fractures) in the bone structure. The central portion of the bone takes the greatest stress and, because of the relatively limited blood supply to this area, its remodelling or healing capacity is also limited. As we walk or run, the navicular bone gets compressed between the talus bone at its back and the other tarsal bones located in front. Along with this, the anatomical location of the navicular bone predisposes it to increased stress. The tibialis posterior muscle is attached to the navicular bone and exerts a pulling force on the bone every time it contracts. Football players, basketball players and persons involved in vigorous physical activities (jumping, sprinting etc.) are also at higher risk of developing navicular stress fractures. More than half of these fractures are seen in track and field athletes. In 1980, navicular stress fractures accounted for 1–2 percent of total stress fractures, while in studies conducted in the late 90s, the ratio increased to 14-35 percent. In the case of the navicular bone, the incidence of stress fractures has increased over the past few decades. Excessive repeated stress on the bone that exceeds its normal remodelling capacity leads to the formation of micro fractures known as stress fractures. ![]()
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