Ulnar variance is the length difference between the ulna and the radius at the wrist joint.

Positive ulnar variance means the ulna is longer than the radius.

Negative ulnar variance means the ulna is shorter than the radius.

Causes can be birth defects, old fractures, growth issues, or wrist instability.

Symptoms may include wrist pain, trouble moving the wrist, and weak grip.

Ulnar variance is measured using an X-ray of the wrist, usually with the arm in a neutral position.

Abnormal ulnar variance can lead to joint stress and soft tissue issues, like ulnar impaction syndrome.

Yes, they may raise the risk of arthritis in the wrist over time.

Diagnosis includes a clinical exam, patient history, and imaging tests, mainly X-rays.

It can put extra pressure on the ulnar side, resulting in tears of the triangular fibrocartilage complex (TFCC) and possible impaction syndrome.

Negative variance can lead to abnormal stress on the lunate bone, possibly causing Kienböck's disease.

Yes, treatments include rest, splinting, physical therapy, and possibly surgery for shortening or lengthening the ulna.

Surgery is looked at when other treatments do not help with pain or function.

This condition occurs when a longer ulna presses against the carpal bones, causing pain and joint damage.

Many with mild variance live normally with little to no symptoms, needing only monitoring or basic management.

It is a surgery to shorten the ulna to relieve wrist pressure caused by positive ulnar variance.

Risks include infection, nerve damage, nonunion of bones, and return of symptoms.

Recovery may take several weeks to months, gradually returning to activities based on the surgeon’s advice.

TFCC is a cartilage in the wrist; positive ulnar variance can tear it, causing pain and instability.

Prevention isn’t always possible because some issues are congenital or due to injury, but protecting the wrist can help reduce injury chances.

Abnormal variance can change joint loading, leading to joint issues. and discomfort.

The variance itself usually isn’t painful or problematic, but it can be concerning with wrist pain or issues.

They might influence one wrist or both, based on the cause.

Yes, especially if they have growth issues or congenital reasons.

It is the death of the lunate bone due to lack of blood, and is more common with negative ulnar variance from uneven load.

Physical therapy can strengthen wrist muscles, enhance movement, and reduce symptoms.

If neglected and severe, they can cause significant problems, but early treatment often leads to positive results.

Using wrist support during tasks, changing activities that hurt, and doing suggested exercises can manage symptoms.

Mainly X-rays are used, but MRIs or CT scans may provide detailed images of soft tissues and bones.

Some cases may be hereditary, but not all forms are.

Non-surgical fixes aren’t available, but symptoms can often be managed with conservative methods.

Many athletes manage their condition with treatment, but should seek advice from health experts for tailored guidance.

With proper care, many people have a good quality of life with few limitations.