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Wrist: scaphoid pseudarthrosis (SNAC)

Introduction to scaphoid pseudarthrosis

Scaphoid pseudarthrosis with progressive collapse (SNAC-Wrist) is a degenerative condition that occurs when an untreated or improperly healed scaphoid fracture leads to chronic instability. The scaphoid is a crucial bone for the stability and function of the wrist.

If a fracture does not heal, it causes persistent pain, instability and eventually osteoarthritis. Fortunately, modern surgical techniques such as bone grafting and arthrodesis offer effective treatment options to restore function and relieve pain.

Wrist: scaphoid pseudarthrosis

Definition and stages of scaphoid pseudarthrosis

Definition of

Scaphoid pseudarthrosis occurs when a scaphoid fracture does not heal properly, leaving a permanent gap or misalignment between the bone fragments. Without treatment, this condition can lead to SNAC wrist, characterized by osteoarthritis and structural deterioration of the wrist.

Stages of SNAC-Wrist

The disease develops in three defined stages:

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Causes and risk factors

Various factors contribute to the development of scaphoid pseudarthrosis, including

A wrist prosthesis involves replacing the damaged joint with an artificial implant. This method is particularly suitable for patients who want to maintain their wrist mobility.

Symptoms and diagnosis

Symptoms

Patients with SNAC-Wrist often show

Diagnosis

The following imaging procedures are used for diagnosis:

Treatment options for scaphoid pseudarthrosis

Bone grafting

Bone grafting is a surgical procedure to restore bone continuity and promote healing. There are two main types:

Arthrodesis (joint fusion)

In advanced cases, a wrist fusion (arthrodesis) can eliminate pain and stabilize the wrist. This procedure includes

Advantages of these treatment methods compared to alternatives

Who can benefit from these processes?

Patients who can benefit from a bone graft or arthrodesis:

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Success rates and case studies

Studies show a high success rate for the treatment of scaphoid pseudarthrosis:

Frequently asked questions

Persistent wrist pain, reduced grip strength, swelling and restricted movement are typical symptoms.

X-rays, MRI or CT are used to assess the healing status of the bone and the progression of osteoarthritis.

Full recovery usually takes 3-6 months, depending on the severity of the disease and postoperative rehabilitation.

Yes, an arthrodesis stiffens the wrist permanently, but eliminates the pain and provides stability.

I offer advanced treatments for SNAC-Wrist in Vienna. Please contact me for a consultation.

Contact information and next steps

If you suffer from wrist pain and suspect scaphoid pseudarthrosis, arrange a consultation at my practice in Vienna. Early treatment can prevent further damage and improve your quality of life.