Fractures

The two main bones of the forearm are the radius and the ulna (see illustration at left). Broken bones occur when there is a sudden, acute pressure, such as a fall on an outstretched wrist. The most common break usually involves the end of the radius and a portion of the ulna bone known as the ulnar styloid (see illustration). Pieces of the broken bone are displaced out of their normal position. The force causing the break in bones is quite significant, and naturally that force also can tear the ligament connections between the bones (see illustration).

Treatment of most fractures consists of realigning the bones in their normal position. Most commonly this is done without the necessity of surgery. It is held in position by using a cast to immobilize the wrist, hand, and forearm - usually for 6-8 weeks.

Ligament Damage

During the healing process, scar tissue forms in ligament connections, and this new, out-of-place tissue increases distortion and wrist pain. Scar tissue is actually a normal human response to injury, but nevertheless can cause distortion and contribute to wrist pain. This scarring and distortion inevitably results in some degree of wrist pain and stiffness.