Bennett's Fracture
A Bennett’s fracture is a break at the base of the thumb metacarpal bone that extends into the carpometacarpal (CMC) joint. It often results from a fall onto an outstretched hand or trauma such as punching or sports injuries. Because this fracture involves the joint surface, it can cause significant pain, swelling, and long-term thumb instability if not properly treated. Physical therapy is critical to restore grip strength, thumb mobility, and hand function after immobilization or surgery.
Diagnosis of Bennett's Fracture
Bennett’s fractures are diagnosed with:
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Medical history review (mechanism of injury, symptoms, hand dominance).
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Physical exam for swelling, tenderness at the base of the thumb, and reduced motion.
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Imaging:
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X-rays to confirm the fracture and joint involvement.
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CT scans may be used for surgical planning in complex cases.
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Treatment for Bennett's Fracture
Because Bennett’s fractures involve the thumb joint, treatment often requires careful management to restore function. Physical therapy after immobilization or surgery may include:
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Edema management with massage, compression, or elevation
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Manual therapy to restore thumb joint mobility and reduce stiffness
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Range of motion exercises for the thumb, wrist, and hand
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Strengthening exercises for grip, pinch, and fine motor control
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Scar management if surgery was performed
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Functional training for activities such as writing, gripping, or tool use
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Education on hand protection and safe activity modification
Symptoms of Bennett's Fracture
Typical signs of a Bennett’s fracture include:
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Sudden pain at the base of the thumb after trauma
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Swelling and bruising around the thumb and wrist
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Limited ability to pinch or grip
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Weakness in hand function
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Visible deformity in severe cases
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Pain with thumb or wrist movement
Prevention of Bennett's Fracture
To reduce the risk of thumb fractures and improve long-term joint health:
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Use protective gear during contact sports and high-risk activities
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Avoid punching or bracing falls with an open hand when possible
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Strengthen hand and forearm muscles for better joint support
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Practice safe fall techniques to reduce trauma risk
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Address thumb pain or swelling early before complications develop