Physical Features of Arthritis in Fingers

Introduction

Arthritis affects the tissues in the joints. It can impact the lining of the joint or the cartilage, the smooth layer at the ends of the bones. Over time, the cartilage can wear down, exposing the bone ends, which then rub against each other and deteriorate. Since the hands have many joints, they are often affected by arthritis. The joints in the fingers, especially the knuckles, are among the most sensitive in the body. They usually function smoothly together, allowing a person to carry out everyday tasks. However, if a person gets arthritis, they might notice changes in the shape of their joints and a reduction in how well their fingers work.

What Is Arthritis of the Hand?

Arthritis can impact different areas of the hand and wrist and has various causes. The hand and wrist have many small joints that allow movement, including fine motor skills. When arthritis affects these joints, simple daily activities can become difficult. Over time, the shape of the affected joints may change, causing pain and limiting movement. Arthritis of the hands usually results in pain, stiffness, swelling, and changes in shape. As this worsens, using the hands for daily activities becomes harder than it used to be.

What Types of Arthritis Affect the Hands?

The usual types of arthritis that can impact the fingers are:

• Osteoarthritis (OA) - Caused by degenerative changes in the cartilage.

• Rheumatoid Arthritis (RA) - An autoimmune disease that leads to joint inflammation.

• Psoriatic Arthritis (PsA) - Associated with psoriasis (an autoimmune skin condition).

What Is the Etiology of Arthritis in Fingers?

Rheumatoid arthritis has a complex etiology. The accepted pathogenic theories are based on the interaction of several genetic risk factors, environmental factors, and aberrant immunological responses. Some genetic risk factors include HLA-DRB1-shared epitopes, non-HLA genetic risk factors, epigenetic modification, and the production of antigenic epitopes. Female sex, smoking, microbiota, stress, infections, environmental variables, and certain ethnicities are all non-genetic risk factors. Developing new antigenic epitopes due to an environmental trigger that causes epigenetic change and autoimmunity is one of the immuno-pathogenic explanations for rheumatoid arthritis.

What Is the Epidemiology of Arthritis in Fingers?

One of the most prevalent inflammatory arthritis is rheumatoid arthritis. The most recent prevalence rates, which vary by area and range from 0.5 % to 1 % globally, still need to be more well documented. With 24 to 36 cases per 100,000 people, Northern Europe and North America have been reported to have a higher incidence. The peak prevalence is seen between the ages of 30 and 50 (although it can happen at any age), with males reporting a later age of onset. The condition affects women more frequently than men, with a female-to-male ratio of 2:1 to 3:1. In monozygotic twins and fraternal twins, the concordance rates for RA are 12 % to 15 % and 2 % to 3 %, respectively.

What Are the Symptoms of Arthritis That Affect the Hands?

• Joint discomfort may manifest as a dull or burning sensation, typically emerging several hours or a day after increased hand usage.

• Individuals may experience morning pain and stiffness (in one or both hands).

• The nature of the pain can fluctuate, transitioning from a dull ache to a sharp sensation.

• The pain can disrupt sleep at night. This discomfort may necessitate alterations in the way one utilizes one's hands.

• The tissue surrounding the affected joint may exhibit redness and tenderness upon touch.

• Individuals may also notice grating, grinding, cracking, or clicking sounds (crepitus) when bending their fingers.

• Full opening and closing of the fingers may be hindered. Additionally, small bony nodules may develop on the middle joints of the fingers or at the distal joints.

• Over time, the finger joints may become enlarged, deformed, and abnormally bent, resulting in weakened hands that struggle to perform daily activities.

How Is Arthritis in the Hands Diagnosed?

Healthcare professionals can diagnose hand arthritis through a physical examination and X-ray imaging. X-rays can reveal the deterioration of cartilage and the development of bone spurs. Additionally, a blood test for rheumatoid factor and other indicators can assist in identifying whether rheumatoid arthritis is the underlying cause.

The blood tests for rheumatoid arthritis (RA) and psoriatic arthritis (PsA) will assess several markers, including:

• Anti-cyclic citrullinated peptide.

• Rheumatoid factor.

• Antinuclear antibodies.

• C-reactive protein.

• Erythrocyte sedimentation rate (ESR).

How Is Arthritis in the Hands Treated?

The primary objectives of treatment for arthritis in the hands are to:

• Alleviate joint pain and stiffness.

• Enhance mobility and functionality.

• Improve overall quality of life.

• In cases of rheumatoid or psoriatic arthritis, to mitigate the disease's progression.

Treatment modalities may encompass splinting or bracing, pharmacological interventions, injections, non-pharmacological strategies, and surgical options.

• Splinting and Bracing: They serve to support and safeguard the joint. Splinting and bracing will help to enhance stability and promote correct alignment.

• Medications: The doctor may recommend medications for arthritis in the fingers (joint pain and swelling). The options vary depending on the severity and type of hand arthritis. For osteoarthritis, only nonsteroidal anti-inflammatory drugs are advised for symptom relief.

• Steroid Injections: Steroid injections are effective in decreasing inflammation and pain. They are generally administered when alternative medications fail to manage inflammation or when only a limited number of joints are involved. The injections are delivered directly into the affected joint. Due to the potential for steroids to weaken tendons and ligaments, the frequency of these injections is restricted.

• Other Management Strategies: These include exercises (strengthening and stretching). They will help relieve the symptoms and restore functionality. Cold therapy may help reduce pain and swelling. Heat therapy may help relieve stiffness, and applying it for no more than 20 minutes at a time is recommended. Maintaining proper nutrition and careful management of blood sugar and cholesterol are also important. Quit smoking, as that may increase your risk of having arthritis.

Conclusion

There have been notable advancements in RA management over the past few years, particularly with the introduction of DMARDs (biological disease-modifying antirheumatic medications). The American College of Rheumatology suggests using a treat-to-target approach to achieve and sustain total remission. Important objectives include preventing extra-articular illness, radiographic progression, joint abnormalities, and early detection and care of these conditions.