Also called the shin, the inner and thicker of the 2 long bones in the lower leg. The tibia runs parallel to the fibula, the narrower bone to which it is attached by ligaments. The upper end articulates with the femur to form the knee joint; the lower end articulates with the talus to form part of the ankle joint. On the inside of the ankle, the tibia is widened and protrudes to form a bony prominence that is known as the medial malleolus.
The larger of the two bones in the leg. One surface of the tibia lies immediately beneath the skin in front, forming the shin; fractures of this bone are usually compound ones. The thigh bone abuts on the larger upper end of the tibia at the knee-joint, whilst below, the tibia and ?bula together enter into the ankle-joint, the two bosses or malleoli at the ankle belonging, the inner to the tibia, the outer to the ?bula.
n. the shin bone: the inner and larger bone of the lower leg (see illustration). It articulates with the *femur above, with the *talus below, and with the *fibula to the side (at both ends); at the lower end is a projection, the medial *malleolus, forming part of the articulation with the talus. —tibial adj.
The term applied by athletes to a condition characterised by pain over the inner border of the shin, which occurs in most runners and sometimes in joggers. The syndrome, also known as shin splints, is due to muscular swelling resulting in inadequate blood supply in the muscle: hence the pain. The disorder may be the result of compartment syndrome (build-up of pressure in the muscles), TENDINITIS, muscle or bone in?ammation, or damage to the muscle. It usually disappears within a few weeks, responding to rest and PHYSIOTHERAPY, with or without injections. In some cases, however, it becomes chronic and so severe that it occurs even at rest. If the cause is the compartment syndrome, relief is usually obtained by a simple operation to relieve the pressure in the affected muscles.... medial tibial syndrome
n. either of two muscles in the leg, extending from the tibia to the metatarsal bones of the foot. The tibialis anterior turns the foot inwards and flexes the toes backwards. Situated behind it, the tibialis posterior extends the toes and inverts the foot.... tibialis
a normal variation in posture in which there is an *in-toe gait due to mild internal rotation of the tibia. The condition is often apparent in infancy when the child starts walking and resolves spontaneously with time. Usually symmetrical, it is associated with normal mobility and is pain-free.... tibial torsion
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