Not So Sweet Nutcracker Fracture
The cuboid bone is a cube-shaped bone located on the outer side of the midfoot. It plays a critical role in connecting the foot to the ankle and providing stability during walking and weight bearing. The cuboid is the only bone in the midfoot that supports the lateral column of the foot, which helps maintain proper alignment and function of the foot.
The lateral column includes the heel bone (calcaneus), cuboid, fourth and fifth metatarsals, and the bones of the two smallest toes, along with supporting soft tissues. Because of this important role, injuries to the cuboid can significantly impact foot mechanics and mobility.
What Is a Cuboid Fracture?
A cuboid fracture is a rare but potentially serious midfoot injury. These fractures account for approximately 1.8 out of every 100,000 fractures each year. While a cuboid fracture can occur on its own, it often happens alongside other midfoot injuries.
Cuboid fractures are commonly caused by:
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Direct trauma to the outer foot
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High-energy crush injuries
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Compression between surrounding bones, often called a “nutcracker fracture”
Symptoms of a Cuboid Fracture
Symptoms may develop immediately after injury and can include:
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Bruising and swelling on the outer side of the foot
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Tenderness and pain along the lateral midfoot
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Difficulty bearing weight
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Foot instability
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Changes in foot shape or arch alignment
Because cuboid fractures can lead to deformity of the foot arch and lateral column, prompt medical evaluation is essential.
How Is a Cuboid Fracture Diagnosed?
A DOC orthopedic surgeon will perform a thorough examination of the foot following injury. X-ray imaging is typically used to confirm the diagnosis and evaluate the alignment of the bone. Advanced imaging may be used in complex cases.
Cuboid fractures are classified based on:
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Stable vs. unstable fractures
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Simple vs. comminuted (multiple fragments)
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Intra-articular vs. extra-articular involvement
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Displaced vs. non-displaced fractures
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Crush injuries
Accurate classification helps guide the most effective treatment plan.
Treatment Options for Cuboid Fractures
Treatment depends on fracture severity and alignment.
Non-Surgical Treatment
Non-displaced cuboid fractures are typically treated with:
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Activity modification and rest
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Protective walking boot with arch support
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Weight bearing as tolerated
Immobilization usually lasts four to six weeks, depending on healing progress.
Surgical Treatment
Displaced or unstable cuboid fractures may require surgery to restore proper alignment and length of the lateral column. Surgical treatment may involve:
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Internal fixation with plates, screws, or wires
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Bone grafting to restore bone length
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Cast immobilization during healing
Recovery and Rehabilitation After a Cuboid Fracture
Recovery time varies depending on the severity of the fracture and treatment method. DOC physical therapy plays an important role in restoring strength, mobility, and proper foot mechanics.
Because the cuboid is essential to the function of the entire foot, untreated or improperly managed fractures can lead to long-term pain and gait problems. Following your treatment plan closely and attending follow-up visits are key to a successful recovery.
Get Expert Care for Foot Fractures at Direct Orthopedic Care
If you’ve experienced an injury to the outer foot or are having difficulty bearing weight, Direct Orthopedic Care provides prompt diagnosis and personalized treatment for cuboid fractures and other foot injuries.
Find a DOC location near you and book an appointment today for expert orthopedic foot and ankle care.
