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Chinese Trigger Finger
Addressing the Root Cause, Not Just the Symptoms
Prime Rehabilitation Services: Resolving Trigger Finger from the Root Cause
Trigger finger, medically known as Tenosynovitis or Stenosing Tenosynovitis, is a very common hand condition in Hong Kong. It gets its local name, Daan Gung Sau (彈弓手), because when you try to straighten your finger after bending it, it feels "stuck" or "locked," requiring extra force to suddenly snap or "trigger" open, often with a distinct "pop" sound. Many patients also experience simultaneous finger numbness or pain.
This condition occurs when the tendon that controls the bending of the finger becomes inflamed or swollen. This swelling prevents the tendon from smoothly gliding through the narrow tunnel-like structure called the tendon sheath that surrounds it.
What is "Trigger Finger"? A Sign of Finger Numbness
Depending on the location affected, trigger finger can be categorized into several types:
Thumb Trigger Finger
The most common type, affecting the flexor tendon of the thumb.
Index/Middle Finger Trigger Finger
Often occurs in the fingers used most frequently for strong gripping.
Ring/Little Finger Trigger Finger
Less common, but still affects the finger's mobility.
Causes and Symptoms: Why is My Finger "Stuck"?
Common Causes:
Trigger finger is typically caused by chronic overuse and strain from prolonged, repetitive movements of the fingers and wrist:
- Repetitive Gripping Actions: Such as extended use of scissors, screwdrivers, gardening tools, or lifting heavy objects.
- "Mobile Phone Users" and "Keyboard Hands": Prolonged scrolling on a phone or excessive use of a computer mouse and keyboard leads to repeated bending and straightening of the finger tendons.
- Sports Activities: Sports that require a tight or firm grip, such as Climbing, Golf, or Tennis, can stress the tendons.
- Specific Medical Conditions: Conditions like diabetes or rheumatoid arthritis may increase the risk of developing trigger finger.
- Age and Gender: It is more frequently observed in women between the ages of 40 and 60.
Common Symptoms:
If you have trigger finger, you may experience the following symptoms:
- Finger Catching or Locking: The finger is difficult to straighten after bending, often worse in the morning or after rest.
- "Popping" Sensation: The finger snaps or makes a "click" or "pop" sound when forced open, usually accompanied by pain.
- Pain at the Base: Tenderness or the presence of a small nodule or bump at the base of the affected finger (near the palm).
- Finger Numbness: Severe inflammation or compression can irritate surrounding nerves, causing finger numbness or weakness.
- Restricted Movement: Inability to fully bend or straighten the digit.
Treatment and Rehabilitation: Saying Goodbye to Trigger Finger and Finger Numbness
Immediate Treatment After Injury
If you notice手指pain or a "catching" sensation in your finger, you should immediately take the following steps:
- Rest: Avoid all activities that aggravate the pain or involve repetitive gripping.
- Ice: Apply ice to the painful area for about 10–15 minutes per session to help reduce inflammation and swelling.
- Professional Care: Seek assistance from a professional Physiotherapist as soon as possible.
At Prime Rehabilitation Services (迅康復康治療中心), our physiotherapists will conduct a detailed assessment and provide a personalized treatment plan, which may include:
- Shockwave Therapy: Targets tendon inflammation and nodules to promote tissue healing.
- Manual Therapy: Techniques to release tight muscles in the hand and forearm.
- Ultrasound or Electrotherapy: Helps to reduce inflammation and relieve pain.
1. Stretching Exercises
Wrist and Finger Extensor Stretch:
Extend your arm forward, palm facing down. Use your other hand to gently press your fingers and hand downwards until you feel a mild stretch in your forearm. Hold for 15–20 seconds, and repeat 3–5 times.
Finger Flexor Stretch:
Extend your arm forward, palm facing up. Gently pull the affected finger(s) back towards your body until you feel a stretch in your palm and forearm. Hold for 15–20 seconds, and repeat 3–5 times.
2. Strengthening Exercises
Stress Ball Squeeze:
Gently squeeze a soft stress ball or sponge, hold for 5 seconds, and then relax. Repeat 10–15 times to gradually strengthen the forearm and finger muscles.
Rubber Band Finger Abduction:
Place a rubber band around all your fingers (excluding the thumb). Try to open and spread your fingers wide, working against the resistance of the band. Repeat 10–15 times.
Important Note: If you experience increased pain while performing any exercise, stop immediately and seek assistance from a professional physiotherapist.
Our Services
Prime Rehabilitation Services provides professional physiotherapy and rehabilitation services. Our expert team will develop the most suitable treatment and training plan for your specific condition, helping you resolve your pain from the source and restore your best state.
If you have pain issues, contact us immediately and let our professional team provide you with a personalized treatment plan.