What Does a Knee Specialist Treat?

A knee specialist is an orthopaedic doctor or surgeon who assesses and manages conditions affecting the knee joint. These may include knee pain, swelling, stiffness, arthritis, ligament injuries, meniscus tears, cartilage damage, fractures, kneecap problems and sports-related injuries.

Knee problems can affect people of different ages. Some patients develop knee pain gradually due to wear and tear, while others experience sudden pain after a fall, twist, sports injury, or accident. Not every knee condition needs surgery, but persistent or worsening symptoms should be assessed so that the cause can be identified and treated appropriately.

What Is a Knee Specialist?

A knee specialist is usually an orthopaedic specialist with experience in diagnosing and managing knee conditions. This may include non-surgical treatment, rehabilitation planning, injections in selected cases and surgery where needed.

A knee specialist may assess problems involving the:

Knee bones
Cartilage
Meniscus
Ligaments
Tendons
Kneecap
Joint lining
Muscles around the knee
Nerves and soft tissues around the knee

The goal of assessment is to identify the source of symptoms and recommend treatment based on the patient’s condition, age, activity level and daily needs.

When Should You See a Knee Specialist?

You may consider seeing a knee specialist if knee symptoms are persistent, recurrent, worsening, or affecting daily activities.

Medical review may be helpful if you have:

Knee pain that does not improve
Knee swelling
Knee stiffness
Difficulty walking
Pain when climbing stairs
Knee locking or catching
Knee clicking with pain
Knee giving way
Pain after a sports injury
Pain after a fall or accident
Reduced range of motion
Difficulty squatting or kneeling
Knee pain that affects sleep
Pain despite rest, medication, or physiotherapy
Previous knee injury with ongoing symptoms

A knee specialist can help determine whether the symptoms are due to injury, inflammation, arthritis, cartilage damage, ligament instability, or another cause.

1. Knee Pain

Knee pain is one of the most common reasons patients see a knee specialist. The pain may be sharp, dull, aching, burning, or pressure-like. It may occur at the front, back, inner side, outer side, or deep inside the knee.

Possible causes of knee pain include:

Osteoarthritis
Meniscus tear
Ligament injury
Tendon inflammation
Cartilage damage
Patellofemoral pain
Bursitis
Fracture
Overuse injury
Referred pain from the hip or back

A knee specialist will assess the location of pain, how it started, what makes it worse and whether there are associated symptoms such as swelling, instability, locking, or stiffness.

2. Knee Osteoarthritis

Knee osteoarthritis occurs when the cartilage in the knee joint gradually wears down. It is more common with ageing, previous injury, excess joint loading, family history and certain lifestyle or occupational factors.

Symptoms may include:

Knee pain during walking or stairs
Morning stiffness
Pain after prolonged standing
Swelling
Reduced movement
Grinding or creaking sensation
Difficulty squatting
Bowing or deformity in more severe cases

Treatment may include exercise therapy, weight management where relevant, medication, physiotherapy, injections, walking aids, or knee replacement surgery in selected patients with severe symptoms.

3. Meniscus Tears

The meniscus is a C-shaped piece of cartilage that helps cushion and stabilise the knee. Meniscus tears may happen after a twisting injury, sports movement, deep squat, fall, or gradual degeneration.

Symptoms may include:

Pain along the joint line
Swelling
Clicking
Catching
Locking
Difficulty fully straightening the knee
Pain when squatting or twisting
Knee giving way

Some meniscus tears may be managed without surgery, while others may need arthroscopic surgery if symptoms such as locking, persistent pain, or mechanical catching continue.

4. ACL Injuries

The anterior cruciate ligament, or ACL, helps stabilise the knee during twisting, pivoting and sudden direction changes. ACL injuries are common in sports such as football, basketball, netball and skiing.

Symptoms may include:

A popping sensation during injury
Sudden swelling
Knee instability
Difficulty continuing sport
Pain with pivoting
Knee giving way
Loss of confidence during movement

Treatment depends on the patient’s activity level, instability, associated injuries and goals. Some patients may manage with rehabilitation, while others may discuss ACL reconstruction.

5. Other Knee Ligament Injuries

Apart from the ACL, the knee has other important ligaments, including the posterior cruciate ligament, medial collateral ligament and lateral collateral ligament. These may be injured during sports, falls, road accidents, or direct blows to the knee.

Symptoms may include:

Pain on one side of the knee
Swelling
Bruising
Instability
Difficulty bearing weight
Pain with side-to-side movement
Reduced confidence when walking

Ligament injuries are assessed based on severity. Mild injuries may heal with bracing and physiotherapy, while more severe or combined ligament injuries may need further treatment.

6. Cartilage Damage

Cartilage covers the ends of bones inside the knee joint and helps the joint move smoothly. Cartilage damage may occur after injury, repeated loading, or wear and tear.

Symptoms may include:

Deep knee pain
Swelling after activity
Catching or locking
Reduced movement
Pain during stairs or squats
Ongoing discomfort after injury

Treatment depends on the size, location and severity of cartilage damage. Options may include physiotherapy, activity changes, injections, arthroscopy, or cartilage procedures in selected cases.

7. Kneecap Problems

The kneecap, or patella, moves in a groove at the front of the knee. Problems can occur if the kneecap does not track smoothly, becomes unstable, or is affected by cartilage irritation.

A knee specialist may assess:

Patellofemoral pain syndrome
Kneecap instability
Recurrent kneecap dislocation
Chondromalacia patellae
Patellar tendinopathy
Pain when climbing stairs
Pain when sitting for long periods
Pain during squats

Treatment may include physiotherapy, strengthening, taping, bracing, activity changes, or surgery in selected cases of recurrent instability.

8. Knee Swelling

Knee swelling can occur after injury or due to inflammation inside the joint. Swelling may develop quickly after a ligament injury or fracture, or gradually due to arthritis, overuse, infection, or other causes.

Seek medical review if swelling is:

Sudden
Significant
Painful
Associated with injury
Associated with fever
Associated with redness or warmth
Recurrent
Preventing movement
Making weight-bearing difficult

A knee specialist may arrange imaging or fluid testing in selected cases to identify the cause.

9. Knee Locking, Catching, or Giving Way

Mechanical symptoms can suggest a structural problem inside the knee. Locking may feel like the knee is stuck and cannot fully bend or straighten. Catching may feel like something is moving or blocking inside the joint. Giving way may suggest instability, weakness, pain inhibition, or ligament injury.

These symptoms may be linked to:

Meniscus tear
Loose body
Cartilage injury
ACL injury
Kneecap instability
Severe arthritis
Muscle weakness

Persistent locking or giving way should be assessed because it may affect safety and mobility.

10. Sports Knee Injuries

Knee specialists commonly assess sports-related knee injuries. These may happen during sudden twisting, landing, sprinting, tackling, jumping, or changes in direction.

Common sports knee injuries include:

ACL tears
Meniscus tears
MCL injuries
Patellar dislocation
Cartilage injuries
Tendon injuries
Runner’s knee
Jumper’s knee
Knee bursitis

The goal of treatment is not only pain relief, but also safe return to sport, prevention of reinjury and restoration of strength and control.

11. Tendon Problems Around the Knee

Tendons connect muscles to bones. Tendon problems around the knee can occur due to overuse, sports loading, jumping, running, or sudden injury.

Common tendon-related conditions include:

Patellar tendinopathy
Quadriceps tendinopathy
Patellar tendon rupture
Quadriceps tendon rupture
Iliotibial band-related pain
Pes anserine tendon irritation

Treatment may involve rest from aggravating activity, physiotherapy, strengthening, load management, injections in selected cases, or surgery for complete tendon rupture.

12. Knee Fractures

Fractures around the knee may involve the kneecap, thigh bone, shin bone, or smaller bones around the joint. They may occur after falls, road accidents, sports injuries, or trauma.

Symptoms may include:

Severe pain
Swelling
Bruising
Inability to bear weight
Deformity
Tenderness over bone
Difficulty moving the knee

Some fractures can be treated with bracing or casting, while others may need surgery to restore alignment and joint stability.

13. Knee Problems in Older Adults

Older adults may develop knee symptoms due to osteoarthritis, previous injuries, reduced muscle strength, balance problems, or fractures after falls.

A knee specialist may assess:

Chronic knee pain
Knee stiffness
Swelling
Reduced walking ability
Falls linked to knee weakness
Severe arthritis
Knee deformity
Need for walking aids
Suitability for knee replacement

Treatment should consider general health, mobility, independence and personal goals.

14. Knee Problems in Active Adults

Active adults may develop knee pain from sports, running, gym training, hiking, cycling, or occupational demands.

Common concerns include:

Runner’s knee
Meniscus injury
Ligament injury
Tendon pain
Cartilage irritation
Overuse injury
Training-related pain
Pain after returning to exercise

A knee specialist can help identify whether the issue is due to training load, movement pattern, structural injury, or underlying joint changes.

15. Knee Pain in Children and Teenagers

Children and teenagers can also develop knee problems, especially during growth and sports participation.

Possible causes include:

Osgood-Schlatter disease
Patellar instability
Sports injuries
Meniscus tears
Ligament injuries
Overuse pain
Growth-related knee pain
Infection or inflammation in selected cases

Persistent pain, swelling, limping, night pain, fever, or inability to bear weight should be assessed promptly.

How Does a Knee Specialist Diagnose Knee Problems?

Diagnosis usually begins with a detailed history and physical examination. The specialist may ask when the pain started, whether there was an injury, where the pain is located and what activities make it worse.

Assessment may include:

Walking and gait assessment
Range of motion check
Swelling assessment
Joint tenderness testing
Ligament stability tests
Meniscus tests
Kneecap tracking assessment
Muscle strength assessment
X-ray
MRI in selected cases
CT scan in selected cases
Ultrasound in selected soft tissue conditions
Blood tests if infection or inflammation is suspected

Not every patient needs MRI. The type of imaging depends on symptoms, examination findings and suspected diagnosis.

Treatment Options a Knee Specialist May Discuss

Treatment depends on the diagnosis, severity and patient goals. Many knee conditions can be managed without surgery, especially in the early stages.

Non-surgical treatment may include:

Rest or activity modification
Physiotherapy
Strengthening exercises
Pain relief medication
Anti-inflammatory medication where suitable
Bracing or taping
Weight management where relevant
Injections in selected cases
Footwear or orthotic advice
Return-to-sport rehabilitation

Surgery may be discussed if symptoms are severe, structural damage is significant, instability persists, or non-surgical treatment has not helped.

Surgical options may include:

Knee arthroscopy
Meniscus repair or trimming
ACL reconstruction
Cartilage procedures
Ligament reconstruction
Fracture fixation
Kneecap stabilisation surgery
Partial knee replacement
Total knee replacement

The specialist should explain the reason for each treatment option, expected recovery and possible risks.

When Is Knee Surgery Considered?

Knee surgery may be considered when symptoms are severe, persistent, or linked to structural problems that are unlikely to improve with non-surgical care.

Surgery may be discussed for:

Locked knee from a meniscus tear
ACL tear with instability
Recurrent kneecap dislocation
Severe knee arthritis
Displaced fracture
Persistent mechanical symptoms
Major tendon rupture
Cartilage injury in selected cases
Failed conservative treatment

Surgery is not always needed. The decision should be based on diagnosis, imaging, symptoms, activity needs and patient preference.

A knee specialist treats conditions affecting the knee joint, including knee pain, arthritis, meniscus tears, ligament injuries, cartilage damage, kneecap problems, swelling, instability, fractures and sports-related injuries. The specialist may recommend non-surgical treatment, rehabilitation, injections, or surgery depending on the diagnosis and severity.

Patients should consider seeing a knee specialist if symptoms are persistent, worsening, recurrent, or affecting walking, stairs, work, exercise, sleep, or daily activities. Prompt review is also important after a significant injury, sudden swelling, inability to bear weight, knee locking, or repeated giving way.

A proper assessment can help identify the cause of knee symptoms and guide a treatment plan that supports pain relief, movement, stability and long-term knee function.