The ‘Saddle Bone Deformity’ is the lay terms that gets occasionally used to describe a dorsal metatarsocuneiform exostosis.
Saddle bone deformity, also known as a metatarsal cuneiform exostosis, is a condition that affects the foot. It involves the formation of a bony prominence or bump on the top surface of the foot, specifically at the base of the first metatarsal bone where it meets the cuneiform bones.
Location: The deformity typically occurs at the joint between the first metatarsal bone and the medial (first) cuneiform bone. This area is located on the top surface of the foot, just behind the base of the big toe.
Appearance: Saddle bone deformity appears as a visible and palpable bony prominence or bump on the top of the foot. It may have a saddle-like shape, hence the name. The size and prominence of the bump can vary from person to person.
Cause: The exact cause of saddle bone deformity is not fully understood. However, it is often associated with repetitive stress or pressure on the foot, such as from activities that involve running, jumping, or high-impact movements. It can also be related to foot biomechanical abnormalities, foot structure, or certain foot conditions.
Symptoms: Saddle bone deformity can cause pain and discomfort, particularly when pressure is applied to the area, such as during walking, running, or wearing tight-fitting shoes. The pain may be localized to the site of the bump or can radiate to the surrounding area.
Diagnosis: A healthcare professional, such as a podiatrist or orthopedic specialist, can diagnose saddle bone deformity through a physical examination of the foot, assessing the location, size, and tenderness of the bony prominence. X-rays or other imaging tests may be ordered to confirm the diagnosis and evaluate the extent of the deformity.
Treatment: Treatment for saddle bone deformity aims to relieve pain and reduce pressure on the affected area. Non-surgical treatment options may include wearing shoes with a wider toe box or custom orthotic inserts to offload pressure from the bump. Padding or cushioning may also be used to provide additional support and reduce friction. In some cases, surgical intervention may be necessary to remove or reduce the size of the bony prominence.