Scaphoid Fracture: How It Occurs and Heals

Individuals who have fractured their scaphoid bone may experience pain and swelling in the wrist just below the thumb. Can immobilization with a cast and physical therapy help?

Scaphoid Fracture

A scaphoid fracture is a break in one of the wrist’s small or carpal bones. This type of fracture occurs most often after a fall onto an outstretched hand. Symptoms typically include swelling and pain in the wrist just below the base of the thumb. These fractures can be difficult to diagnose since they don’t always appear on an X-ray. If the X-ray is negative and the healthcare provider suspects a scaphoid fracture, an MRI may be necessary. Surgery may be required in more severe cases or when the injury is not healing correctly. (American Academy of Orthopaedic Surgeons, 2023)

A Break In The – Navicular Bone

The scaphoid is one of eight carpal bones in the wrist. It is located just below the thumb’s base and is shaped like a kidney bean. This bone can be identified by holding a thumbs-up position and feeling for the hollow between the two tendons below your thumb. The scaphoid is located at the base of the hollow. A break in the scaphoid bone most commonly occurs in the middle of the bone but can also happen at either end. A scaphoid fracture can be displaced or non-displaced (American Academy of Orthopaedic Surgeons, 2023)

Displaced Fracture

• It is when the bone fragments have moved out of alignment.

Non-displaced Fracture

• It is when the fragments are still in their normal location in the hand.

The scaphoid’s blood supply comes from a small vessel that enters the most distant part of the bone and flows back through the bone. Because of this one small blood supply, a fracture in the center can stop the circulation to the proximal portion of the bone. Because of this, scaphoid fractures need immediate diagnosis and treatment.

Symptoms

Pain or deep aching on the thumb-side of the wrist, typically after a fall on an outstretched arm, could be a scaphoid fracture. Other symptoms experienced include: (American Academy of Orthopaedic Surgeons, 2023)

• Tenderness at the base of the hollow area.
• Pain at the base of the hollow area.
• Swelling in the wrist
• Difficulty gripping objects

Pain can become worse from: (American Academy of Orthopaedic Surgeons, 2023)

• Grasping
• Pulling
• Pushing
• Pinching

Diagnosis

A healthcare provider will evaluate the hand for tenderness and pain in the hollow and/or the bone. If a break is suspected, they will order an X-ray. (Clementson M., Björkman A., & Thomsen N. O. B. 2020) Many patients are diagnosed with a wrist sprain when they have a fracture. Diagnosis can be difficult because the fracture often doesn’t appear on X-rays until weeks after the healing process starts. Physicians commonly treat a wrist injury as a scaphoid fracture initially and then repeat X-rays within two weeks. (American Academy of Orthopaedic Surgeons, 2023) If the injury doesn’t show on an X-ray, the provider may order an MRI, as these fractures can be easier to see on an MRI. An MRI can help ensure appropriate treatment immediately. (Wong S. B. S., & Peh W. C. G. 2019)

Treatment

If a wrist fracture is diagnosed, the wrist will be immobilized in a cast. However, a healthcare provider may also put the wrist in a cast if the X-ray is negative but they suspect a fracture. This will stabilize the injury until an MRI can be performed. With immobilization and follow-up treatment, scaphoid fractures often heal without surgery. Repeat X-rays are taken over several weeks or months so the provider can make sure the injury is healing correctly. If it is not healing correctly, surgery may be recommended. (Clementson M., Björkman A., & Thomsen N. O. B. 2020) If the fracture is displaced, healing correctly may be a challenge. In this case, a physician may recommend initial surgery to reposition the bones. (Clementson M., Björkman A., & Thomsen N. O. B. 2020) This type of surgery involves pinning the bone in place with screws.

Healing Time

• With treatment, non-displaced fractures can heal in 6 weeks, while most displaced fractures take 10 to 12 weeks. (Clementson M., Björkman A., & Thomsen N. O. B. 2020)
• Scaphoid fractures can take longer than this, and sometimes, they don’t heal. (American Academy of Orthopaedic Surgeons, 2023)

Recovery

With the wrist in a cast, individuals will be instructed on activities to avoid placing even a small amount of strain (American Academy of Orthopaedic Surgeons, 2023)

• Lifting
• Pushing
• Pulling objects that weigh more than one pound.
• Sports activities
• Throwing
• Climbing
• Using tools or machinery that vibrate.

Rehabilitation is an important part of healing because immobilization takes a long time. Wrist range-of-motion exercises can be started, followed by strengthening exercises for the wrist flexors and extensors. Supination, pronation, and grip exercises are also part of physical therapy.

Complications

Scaphoid fractures can lead to serious complications, especially when not properly treated. These include: (American Academy of Orthopaedic Surgeons, 2023) (Almigdad A. et al., 2024)

Nonunion

• This describes a fracture that fails to heal.

Carpal Collapse

• This is a form of degenerative arthritis.

Osteoarthritis

• This condition causes degeneration of the cartilage in the joint.

Avascular Necrosis

• This is when the blood supply to the bone is reduced or cut off, causing the bone to die.

Injury Medical Chiropractic and Functional Medicine Clinic

Injury Medical Chiropractic and Functional Medicine Clinic works with primary healthcare providers and specialists to build optimal health and wellness solutions. We focus on what works for you to relieve pain, restore function, prevent injury, and mitigate issues through adjustments that help the body realign itself. The clinic can also work with other medical professionals to integrate a treatment plan to resolve musculoskeletal problems.

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References

American Academy of Orthopaedic Surgeons. (2023). Scaphoid fracture of the wrist. orthoinfo.aaos.org/en/diseases–conditions/scaphoid-fracture-of-the-wrist

Clementson, M., Björkman, A., & Thomsen, N. O. B. (2020). Acute scaphoid fractures: guidelines for diagnosis and treatment. EFORT open reviews, 5(2), 96–103. doi.org/10.1302/2058-5241.5.190025

Wong, S. B. S., & Peh, W. C. G. (2019). The role of magnetic resonance imaging in the evaluation of scaphoid fractures. Journal of Medical Radiation Sciences, 66(1), 3–4. doi.org/10.1002/jmrs.316

Almigdad, A., Al-Zoubi, A., Mustafa, A., Al-Qasaimeh, M., Azzam, E., Mestarihi, S., Khair, Y., & Almanasier, G. (2024). A review of scaphoid fracture, treatment outcomes, and consequences. International orthopaedics, 48(2), 529–536. doi.org/10.1007/s00264-023-06014-2