Easy Hand Blast Injury Physiotherapy Exercise to Get back to job early

Last updated on May 19th, 2024 at 12:18 pm

After the plastic surgery reconstruction of the hand blast injury, the biggest challenge is to regain wrist and finger range of motion. Physiotherapy plays a crucial role in rehabilitating the cracker blast-in-hand injury sufferer back to the job.

This article will discuss everything related to hand injury due to blast. We will especially focus on physiotherapy treatment and exercises.

Hand blast injury case study

The research has revealed the most common causes of blast injuries are firecrackers, homemade bombs and bottle bombs. The involvement of hands in such injuries is due predominantly to:

1. Accidental blast during the hurling of a bomb, and,
2. The injury sustained when a person tries to shield himself from a bomb being hurled at him with his hands¹.

The most common injury pattern is ¹:

1. Damage to the muscles in the space between the thumb and index finger.
2. The thumb joint can dislocate towards the back, and injuries to the bones in the hand near the thumb might also occur.

Before proceeding to the exercise, let us start with the case of a 28-year-old male I dealt with at our physiotherapy centre.

A 28-year-old male with a postoperative case of hand blast injury came to our department for physiotherapy. Here’s the history of his injury. When a firecracker accidentally blasted into his hand, he was having fun with crackers. Immediately, He was shifted to the local hospital by his friends and family members. The doctors ruled out any finger or wrist bone fracture; they performed primary debridement by primary closure.

It was a blast injury of the hand when a firecracker blasted on his hand. An X-ray ruled out any involvement in the bone fracture. There was only involvement of the soft tissue. After stitch removal, he was referred to physiotherapy for postoperative physiotherapy.

Rehabilitation exercise after blast injury of the hand

Stiffness in wrist and finger joints is a very common issue after surgical treatment. For this, the range-of-motion exercise program should be started as early as possible. Post-operatively, hand blast injury rehabilitation can be categorised into three phases.

1. Acute Phase
2. Sub-acute Phase
3. Rehabilitative Phase.

The degree and intensity of exercises depend on this phase. So, let’s start with the acute phase.

Acute phase

The acute phase is the initial stage after surgery and is characterised by swelling and pain. Physiotherapy’s aim during this phase is to control swelling (oedema) and manage pain.

Swelling (oedema) control

a) Elevation: keep the hand in an elevated position while sleeping by using a pillow (see figure)

b) Movement: In an elevated position, slight finger and wrist movement is started within a pain-free range.
c) Compression: Using crepe bandages or compressive garments, optimum pressure is applied. 

Pain Control

• Heat therapy.
• Ultrasonic therapy: Its micro-massage effect is beneficial for both swelling and pain.
• Interferential therapy benefits pain because of its stimulatory effect, which contracts the muscle and helps relieve swelling.  

Strengthening of muscle around wrist and hand

During the acute phase, the slightest movement is painful. So, for muscle strengthening, Faradic Stimulation is given. It stimulates the muscle, which contracts and relaxes the muscle like normal muscles. Wrist extensors and finger extensors are mainly concentrated.

Sub-acute phase

The sub-acute phase is characterised by reduced acute pain and swelling. The surgical wound is healed, and the surgical scar mark is left over. During this phase, the aim of physiotherapy would be

1. Gaining range of motion of wrist and finger joints.
2. Softening of scar mark.
3. Strengthening of muscle around wrist and fingers.
4. Taking care of the swelling.  

Wrist flexion-extension

Stabilize your forearm on a table or any flat surface. To perform the flexion-extension exercise,

1. Start by moving your wrist into flexion. For this, move your wrist joint forward, as if you were trying to touch the inside of your wrist to your forearm and
2. Then, perform wrist extension. To do this, move your hand backwards as if you were trying to touch the back of your hand to your forearm.
3. Perform this alternate flexion and extension smoothly and slowly.
4. Repeat this for a minimum of 20 to 30 times in a session.

Wrist radial and ulnar deviation

To perform the radial-ulnar deviation exercise:

1. Start by extending your arm in front of you with your palm facing down. Then, move your wrist sideways towards your thumb as far as is comfortable. This motion is called radial deviation.
2. Then, slowly move your wrist sideways towards your little finger.
3. Perform this alternate radial and ulnar deviation slowly and smoothly.
4. Repeat this movement at least 20 to 30 times in a session.

Finger range of motion exercise

This exercise is aimed at gaining the range of motion of the small joints of the finger. Observe the steps on the figure and follow the steps below:

• Step 1: Start by spreading your fingers as wide as possible.
• Step 2: Bend your fingers so your fingertips touch your palm’s top.
• Step 3: Straighten your fingers.
• Step 4: Bend your fingers again to touch the middle of your palm.Step 5: Open your fingers wide.Step 6: Bring your fingertips to touch the bottom of your palm.
• Step 7: Bring your thumb to touch each fingertip, one at a time.

Bring your thumb to touch different places on your palm. Do 3 sets twice a day.

Wrist stretching exercises

Our next exercise is meant to stretch the stiff and tight muscles of the wrist joint. First, try to learn the exercise, and then you can increase the intensity of the stretch.

1. Start by placing your arm on the table in front of you with your forearm vertical.
2. Use your opposite hand to gently press down on the back of the hand to stretch the wrist flexors.
3. Hold this position for at least 30 seconds, feeling a gentle stretch in the forearm.
4. Then, switch to the other side and repeat the exercise, this time with your palm facing up and your fingers pointing towards the floor.
5. Gently press down on the back of the hand to stretch the wrist extensors, and hold for at least 30 seconds.
6. Repeat this for 3 to 4 times in a session.

Softening of scar mark

A scar mark adheres to the lower structure, and when the scar is not soft, any stretching causes pain. Both factors together restrict joint movement. Therefore, softening scars is so important. Your physiotherapist will apply the following procedure for it.

1. DTMF (Deep Transverse Friction Massage) over the scar mark.
2. Ultrasonic Therapy.  
3. Strengthening: a) Resisted exercises. b) Grip strengthening exercise.

Pain

• Interferential Therapy.
• Heat therapy.  

Contrast bath for swelling

A contrast bath or alternate cold and hot bath effectively manages hand and finger swelling. It involves dipping hands alternately in cold and hot water.

Do the contrast bath twice daily, and you will find instant relief from swelling and pain.

Rehabilitation phase

In this phase, the patient is prepared to return to work as before. According to their needs, fine finger movement is taught, particularly thumb movement. All the exercises done in the subacute phase are repeated but done more aggressively.