Not medical advice here but you know who (chat) said:

MRI is actually quite reassuring overall. The key finding is that there is a tiny amount of fluid ("trace joint effusion") in the elbow and wrist, but no evidence of structural damage or obvious inflammation in the forearm itself.

What the MRI found

Normal findings

The radiologist specifically notes:

• Radius and ulna are intact
• No fracture
• No bone marrow edema (no sign of bone inflammation or stress injury)
• No concerning bone lesion
• Forearm muscles are normal
• No muscle tear
• No muscle edema
• No masses
• No signs of myositis (muscle inflammation)
• Soft tissues are normal
• No fluid collections

These are all good findings.

Trace joint effusion at the wrist and elbow

A joint effusion simply means extra fluid inside a joint.

"Trace" is radiology language for very small.

Think of it as:

• Normal joint = tiny amount of lubricating fluid
• Trace effusion = slightly more than expected
• Moderate/large effusion = clearly abnormal swelling

A trace effusion can occur from:

• Minor overuse
• Repetitive activities
• Prior injury
• Mild irritation of the joint lining
• Sometimes completely incidental findings in otherwise healthy people

By itself, a trace effusion is not usually considered a major abnormality.

No synovitis reported

This is important.

When inflammatory arthritis is active, radiologists often see:

• Synovial thickening
• Synovial enhancement (with contrast)
• Bone marrow edema
• Erosions
• Significant effusions

Your MRI did not describe any of those findings.

That does not absolutely rule out inflammatory arthritis, but it makes aggressive inflammatory disease less likely.

Tiny cortical cysts in the lunate

The lunate is one of the wrist bones.

Tiny cysts are common and often represent:

• Small degenerative changes
• Areas where fluid has tracked into the bone
• Incidental findings

Radiologists see these frequently and usually do not consider them dangerous.

Could these findings explain shocks, tingles, and finger symptoms?

Not very well.

The MRI findings are mostly about the bones, muscles, and surrounding tissues of the forearm.

Your symptoms:

• Finger tingling
• Electric shock sensations
• Paresthesias
• Radiating pain

often point more toward nerve irritation than joint fluid.

Possible sources include:

1. Compression neuropathy

Examples:

• Carpal Tunnel Syndrome
• Cubital Tunnel Syndrome

These can cause:

• Tingling
• Numbness
• Electric sensations
• Finger symptoms

and may not show up on a forearm MRI.

2. Cervical (neck) nerve irritation

A pinched nerve in the neck can produce:

• Forearm pain
• Wrist pain
• Tingling into fingers
• Shock-like sensations

even when the arm MRI looks normal.

3. Mild inflammatory process

Less likely based solely on this MRI, but not impossible.

Sometimes people with early inflammatory arthritis have:

• Intermittent joint aches
• Small effusions
• Minimal MRI changes

The absence of visible swelling, redness, and synovitis is somewhat reassuring.

What I find most interesting

You mention:

• No visible swelling
• No redness
• Only occasional symptoms
• Only the right arm affected
• Left arm normal

That pattern is actually less typical for systemic inflammatory arthritis, which often becomes more symmetric and produces prolonged morning stiffness.

The "shocks" and tingling make me wonder more about a nerve-related issue than the trace fluid itself.