Peninsula Foot and Ankle Clinic

What Is Osteoarthritis? Osteoarthritis is a condition characterized by the breakdown and eventual loss of cartilage in one or more joints. Cartilage (the connective tissue found at the end of the bones in the joints) protects and cushions the bones during movement. When cartilage deteriorates or is

What is the Os Trigonum?  The os trigonum is an extra (accessory) bone that sometimes develops behind the ankle bone (talus). It is connected to the talus by a fibrous band. The presence of an os trigonum in one or both feet is congenital (present at birth). It becomes evident during adolescence when

The Lisfranc Joint The Lisfranc joint is the point at which the metatarsal bones (long bones that lead up to the toes) and the tarsal bones (bones in the arch) connect. The Lisfranc ligament is a tough band of tissue that joins two of these bones. This is important for maintaining proper alignment and

What is a Fifth Metatarsal Fracture? Fractures (breaks) are common in the fifth metatarsal – the long bone on the outside of the foot that connects to the little toe. Two types of fractures that often occur in the fifth metatarsal are:   Avulsion fracture. In an avulsion fracture, a small

The foot contains 26 bones and more than 30 joints. The body’s natural response to any type of joint injury is to increase blood flow to the affected area. This results in an accumulation of fluid in the tissues in and around the joint, resulting in swelling. Depending on the cause of the injury, joint

Intoeing (pigeon toes) is a condition in which the feet point inward when walking. It is commonly seen in children and may resolve in very early childhood with no treatment or intervention.  The child should be examined by a foot and ankle surgeon if the intoeing is causing significant tripping, difficulty

What is Cavus Foot? Cavus foot is a condition in which the foot has a very high arch. Because of this high arch, an excessive amount of weight is placed on the ball and heel of the foot when walking or standing. Cavus foot can lead to a variety of signs and symptoms, such as pain and instability. It

What Is Hammertoe? Hammertoe is a contracture (bending) of one or both joints of the second, third, fourth, or fifth (little) toes. This abnormal bending can put pressure on the toe when wearing shoes, causing problems to develop.   Hammertoes usually start out as mild deformities and get progressively

What Is Hallux Rigidus? Hallux rigidus is a disorder of the joint located at the base of the big toe. It causes pain and stiffness in the joint, and with time it gets increasingly harder to bend the toe.  ‘Hallux” refers to the big toe, while “rigidus” indicates that the toe is rigid and cannot

What Is Haglund's Deformity? Haglund’s deformity is a bony enlargement on the back of the heel. The soft tissue near the Achilles tendon becomes irritated when the bony enlargement rubs against shoes.  This often leads to painful bursitis, which is an inflammation of the bursa (a fluid-filled sac