Slipped Extensor Tendon, Sagittal Band Rupture
If you suffer from slipped extensor tendon, sagittal band rupture, please Schedule an appointment with one of our orthopedic specialists as soon as possible.
What is Slipped Extensor Tendon, Sagittal Band Rupture?
A slipped extensor tendon, also called a sagittal band rupture, occurs when a tear or injury damages the sagittal band, a structure that helps hold the extensor tendon in place over the knuckle joint. The damaged sagittal band allows the extensor tendon to move away from its normal position, causing the tendon to slip toward one side of the finger during movement. The condition commonly affects the middle finger but can involve other fingers as well. Patients often experience pain, swelling, tenderness around the knuckle, and difficulty fully straightening the affected finger.
A sagittal band rupture can interfere with normal hand function by reducing extensor tendon stability and finger control. The injury may develop after direct trauma, forceful finger bending, repetitive hand movements, or activities that place stress on the knuckle joints. Specialists diagnose the condition through physical examinations and movement tests, then recommend treatment options based on the severity of the tendon displacement and symptoms.
Causes of Slipped Extensor Tendon, Sagittal Band Rupture
A slipped extensor tendon or sagittal band rupture can cause pain, swelling, and changes in finger movement. Damage to the sagittal band affects tendon stability and makes normal finger extension more difficult. Symptoms often appear after an injury or repetitive stress and may worsen during activities that require gripping or straightening the finger.
Symptoms may include:
- Pain or tenderness around the affected knuckle joint
- Swelling over the back of the hand or finger joint
- Extensor tendon shifting or snapping to one side during finger movement
- Difficulty fully straightening the affected finger
- Weakness when extending the finger against resistance
- A feeling of instability or looseness around the knuckle
- Limited finger motion or stiffness
- Clicking, popping, or catching sensations during movement
- Reduced grip strength or difficulty performing hand activities
Treatments Options for Slipped Extensor Tendon, Sagittal Band Rupture
Mild cases of slipped extensor tendon or sagittal band rupture often respond to non-surgical treatments that protect the injured tendon and support healing. Specialists may recommend a custom splint to keep the extensor tendon properly aligned while the sagittal band repairs itself. Patients can also use rest, ice, activity modification, and anti-inflammatory medications to reduce pain and swelling. Physical therapy helps restore finger movement, strength, and coordination as healing progresses.
Severe cases may require surgical treatment when the tendon continues to slip, the injury causes significant instability, or conservative treatments fail. Surgeons repair or reconstruct the damaged sagittal band to stabilize the extensor tendon and restore normal finger function. After surgery, patients follow a rehabilitation program that includes gradual motion exercises and strengthening activities. Proper treatment helps improve hand function and reduces the risk of long-term stiffness, weakness, and tendon instability.
If you would like to speak to a Hand Specialist Fort Worth or Dallas, give us a call at 817-697-4038, or contact us online. Telemedicine appointments are also available.
