Malunion
Malunion
Malunion (pronounced: mal-union) is a medical term that refers to the improper healing of a broken bone. This condition occurs when the bone heals in an incorrect position or alignment, which can lead to functional impairment and deformity.
Etymology
The term "malunion" is derived from the Latin words "malus" meaning bad, and "unio" meaning union or joining. It literally translates to "bad joining", referring to the improper alignment of the healed bone.
Definition
A malunion is defined as a healed fracture that has united in a position of deformity. This can occur due to inadequate reduction, improper immobilization, or premature weight-bearing. The deformity may be angular, rotational, or a combination of both. Malunions can occur in any bone but are most common in the long bones of the arms and legs.
Symptoms
Symptoms of a malunion can vary depending on the location and severity of the deformity. Common symptoms include pain, decreased range of motion, functional impairment, and visible deformity. In severe cases, a malunion can lead to arthritis and other long-term complications.
Treatment
Treatment for a malunion typically involves surgery to correct the deformity. This may include osteotomy, where the bone is cut and realigned, or bone grafting, where new bone is added to help correct the deformity. In some cases, physical therapy may also be recommended to improve function and mobility.
Related Terms
- Fracture: A break in the continuity of the bone.
- Nonunion: A condition where the broken bone fails to heal.
- Osteotomy: A surgical procedure that involves cutting and realigning the bone.
- Bone graft: A procedure where new bone is added to help correct a deformity or promote healing.
External links
- Medical encyclopedia article on Malunion
- Wikipedia's article - Malunion
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