Knee Joint Disorders: Diagnosis and Modern
Treatment Approaches
The knee is one of the largest and most heavily loaded joints in the human body. It is subjected to
significant stress during everyday activities such as walking, running, climbing stairs, and
exercising. Pain, swelling, and restricted mobility may result not only from injuries but also from
inflammatory, degenerative, and other pathological conditions.
Common Knee Joint Disorders
• Knee Osteoarthritis (Gonarthrosis) — A chronic degenerative joint disease affecting
the articular cartilage, subchondral bone, and other joint structures. It may cause pain,
stiffness, and progressive limitations in mobility.
• Meniscal Injuries — Traumatic or degenerative changes affecting the menisci, which
may lead to pain, swelling, clicking sensations, and impaired joint function.
• Synovitis — Inflammation of the synovial membrane, often associated with fluid
accumulation within the joint, swelling, and discomfort.
• Ligament Injuries — Partial or complete ligament tears that may result in pain, joint
instability, and restricted movement.
• Tendinopathies and Bursitis — Disorders affecting the tendons and periarticular bursae,
frequently associated with repetitive stress, injuries, or inflammatory processes.
When Should You Consult an Orthopedic Specialist?
Persistent or recurrent knee pain, swelling, restricted flexion or extension, a sensation of
instability, painful clicking, or episodes of joint locking are important reasons to seek an
orthopedic evaluation.
Timely medical attention is particularly important when symptoms develop following an injury
or progressively worsen, interfering with daily activities.
Severe pain, inability to bear weight, or a hot and markedly swollen joint, particularly when
accompanied by fever, requires urgent medical assessment.
Modern Approaches to Diagnosis and Treatment
Diagnosis begins with a comprehensive clinical examination, including an assessment of joint
mobility, stability, and the characteristics of the patient's pain.
When clinically indicated, additional diagnostic investigations may include X-rays, ultrasound,
or magnetic resonance imaging (MRI).
Modern orthopedic care emphasizes an individualized approach, preservation of joint
function, and the use of evidence-based treatment methods.
Depending on the diagnosis, treatment may include medication, therapeutic exercise,
individually selected orthopedic braces, intra-articular injections, and comprehensive
rehabilitation.
In certain cases, particularly when specific structural injuries are present or conservative
treatment proves insufficient, surgical intervention may be considered.
It is important to understand that not every meniscal tear requires surgery, and a diagnosis
of osteoarthritis does not necessarily mean that joint replacement will be needed.
Treatment decisions are based on the nature of the condition, severity of symptoms, functional
requirements, and individual patient characteristics.
The Primary Goal of Treatment
The objective of orthopedic treatment extends beyond temporary pain relief. It is to restore
mobility as much as possible, improve quality of life, preserve knee joint function, and prevent
complications.
Early diagnosis and an appropriately selected treatment plan can often help control symptoms
and maintain the patient's usual level of physical activity.
Medical References
This article is based on clinical guidelines and publications from internationally recognized
professional medical organizations.
United States
1. 2. Europe
3. 4. American Academy of Orthopaedic Surgeons (AAOS) — Arthritis of the Knee —
Diagnosis and management of knee arthritis.
AAOS — Management of Acute Isolated Meniscal Pathology (2024) — Clinical
recommendations for the diagnosis and treatment of meniscal injuries.
National Institute for Health and Care Excellence (NICE) — Osteoarthritis in Over 16s:
Diagnosis and Management — UK clinical guidelines for osteoarthritis management.
European Society of Sports Traumatology, Knee Surgery and Arthroscopy (ESSKA) —
EU–US Meniscus Rehabilitation Consensus (2025) — International consensus on
nonoperative treatment and rehabilitation following meniscal injuries.
Russia
5. 6. Russian Ministry of Health — Clinical Guidelines on Knee Osteoarthritis (Gonarthrosis),
2024 — National clinical recommendations developed with the participation of Russian
orthopedic and rheumatology associations.
Clinical Guidelines on Articular Cartilage Injuries of the Knee (2024) —
Recommendations for the diagnosis and treatment of knee cartilage injuries.