Knee pain is one of the most common musculoskeletal problems and can affect people of different ages and activity levels. It may interfere with walking, standing, climbing stairs, squatting, getting up from a chair, exercising or participating in sports.
Some knee problems develop gradually because of repeated loading, changes in physical activity, age-related joint changes or muscle weakness. Others begin suddenly after twisting, landing, falling, collision or another traumatic injury. Depending on the underlying condition, knee pain may occur together with swelling, stiffness, weakness, clicking, locking or a feeling that the knee is unstable.
The knee is a major weight-bearing joint connecting the hip and ankle during movement. Bones, cartilage, menisci, ligaments, muscles, tendons and other soft tissues all contribute to normal knee function. Because several structures can produce similar symptoms, not every person with knee pain has the same condition or requires the same rehabilitation approach.
At Asia Digital Physiotherapy & Orthopedic Rehabilitation Center (ADPORC), knee rehabilitation is planned according to the patient's clinical assessment, pain pattern, movement limitations, strength, stability, functional difficulties and underlying condition. Management may include activity and load modification, therapeutic exercise, mobility training, progressive strengthening, balance and proprioception training, gait or movement retraining, manual therapy and other physiotherapy interventions according to clinical need.
Understanding Knee Pain: A Structural Perspective
Knee pain refers to discomfort arising from the knee joint or the structures surrounding it. Pain may be felt at the front, inner side, outer side or back of the knee. Some patients experience more generalized joint pain rather than pain at one specific location.
The knee region contains several clinically important structures:
- Femur
- Tibia
- Patella
- Articular cartilage
- Medial and lateral menisci
- Anterior and posterior cruciate ligaments
- Medial and lateral collateral ligaments
- Quadriceps and patellar tendons
- Hamstring and surrounding tendons
- Joint capsule, synovium and bursae
- Muscles controlling the hip, knee and lower leg
Depending on the condition, knee problems may produce pain, stiffness, swelling, tenderness, weakness, reduced range of motion, instability, clicking, catching or locking.
The location and behaviour of symptoms can provide useful clues about the possible source of knee pain, but they cannot confirm a diagnosis by themselves.
Common Locations of Knee Pain and What They May Mean
The location of knee pain can help identify which structures or conditions may require further assessment.
-
Front of the Knee Pain:
Pain around or behind the kneecap is commonly associated with Patellofemoral Pain Syndrome.Symptoms may become more noticeable when climbing or descending stairs, squatting, running, jumping or sitting for a long time with the knee bent.
Patellar tendon problems, quadriceps tendon problems and some cases of knee osteoarthritis may also produce anterior knee pain.
-
Inner Side of the Knee Pain:
Pain around the medial or inner side of the knee may be associated with:- Medial meniscus injury
- Medial collateral ligament injury
- Knee osteoarthritis
- Pes anserine-related pain
- Other medial joint or tendon problems
The exact symptom pattern and mechanism of injury are important for differentiating these conditions.
-
Outer Side of the Knee Pain:
Lateral or outer knee pain may occur with Iliotibial Band Syndrome, lateral meniscus injury, lateral collateral ligament injury or other lateral knee structures.IT Band Syndrome is particularly associated with repetitive activities such as running and may cause pain around the outer side of the knee during activity.
-
Back of the Knee Pain:
Pain behind the knee may arise from several structures.Possible causes include joint swelling, Baker's cyst, hamstring or gastrocnemius-related problems and other posterior knee conditions.
Persistent swelling or a new lump behind the knee should be appropriately assessed rather than self-diagnosed.
-
Pain Below the Kneecap:
Pain around the patellar tendon below the kneecap may occur with Patellar Tendinopathy, particularly in people involved in jumping, running or repetitive high-load activities.Symptoms commonly increase with jumping, landing, squatting or other activities that heavily load the knee extensor mechanism.
-
Generalized Knee Pain With Stiffness:
A more diffuse aching pain with stiffness and reduced movement may occur with Knee Osteoarthritis or other joint-related conditions.Symptoms may be more noticeable during prolonged walking, stair climbing, standing or after periods of inactivity.
-
Knee Pain With Locking or Catching:
Locking, catching or difficulty fully straightening the knee may occur with meniscal injury or other mechanical joint problems.A knee that becomes truly locked and cannot move normally requires appropriate medical assessment.
-
Knee Pain With Instability or Giving Way:
A feeling that the knee buckles or gives way can occur following ligament injury, significant muscle weakness or other problems affecting knee stability.ACL injury is an important consideration after a twisting sports injury accompanied by swelling and instability.
Common Causes of Knee Pain
Knee pain may originate from the joint surfaces, menisci, ligaments, muscles, tendons, bursae or surrounding structures. The following are some of the important causes.
-
Knee Osteoarthritis:
Knee Osteoarthritis is a joint condition involving structural and functional changes within the knee that can contribute to pain, stiffness and reduced mobility.Symptoms often develop gradually and may include aching pain, morning or post-rest stiffness, reduced knee movement and difficulty walking, climbing stairs or rising from a chair.
Muscle weakness, reduced activity tolerance and changes in movement can further affect function.
Related guide: Knee Osteoarthritis: Causes, Symptoms & Physiotherapy Treatment
-
Patellofemoral Pain Syndrome:
Patellofemoral Pain Syndrome commonly produces pain around or behind the kneecap.Pain may increase during:
- Stair climbing
- Squatting
- Running
- Jumping
- Prolonged sitting
- Repeated knee bending
Hip and knee muscle capacity, training load and movement patterns may all need to be considered during assessment and rehabilitation.
-
Meniscus Injury:
The medial and lateral menisci are fibrocartilage structures that contribute to load distribution and joint function within the knee.Meniscus injuries may occur after twisting or pivoting movements, but degenerative meniscal changes can also develop gradually.
Symptoms may include joint-line pain, swelling, catching, clicking or restriction of movement. Not every meniscal problem produces true locking.
-
ACL Injury:
The Anterior Cruciate Ligament (ACL) is an important stabilizing ligament within the knee.ACL injuries commonly occur during sudden deceleration, pivoting, cutting, awkward landing or direct sporting trauma. Symptoms may include a popping sensation, rapid swelling, pain, reduced motion and a feeling that the knee is unstable or gives way.
Related guide: ACL Injury: Causes, Symptoms & Physiotherapy Treatment
-
MCL Injury:
The Medial Collateral Ligament (MCL) helps stabilize the inner side of the knee.It can be injured when force pushes the knee inward, during sports, falls or other traumatic events.
Patients may experience inner-knee pain, tenderness, swelling and a feeling of instability depending on the severity of injury.
-
PCL Injury:
The Posterior Cruciate Ligament (PCL) contributes to knee stability by limiting excessive backward movement of the tibia relative to the femur.PCL injury may occur after direct force to the front of a bent knee, such as during sports or road traffic trauma.
Pain, swelling and instability may occur, although the presentation can differ from ACL injury.
-
Patellar Tendinopathy:
Patellar Tendinopathy affects the tendon connecting the patella to the tibia.It is commonly associated with repeated high-load activities such as jumping, landing, sprinting or rapid changes in training volume.
Pain is generally felt below the kneecap and may initially occur only during activity before becoming more persistent if loading continues to exceed tissue capacity.
-
Iliotibial Band Syndrome:
Iliotibial Band Syndrome (ITBS) is a common source of lateral knee pain, particularly among runners and other endurance athletes.Symptoms typically occur on the outer side of the knee during repetitive flexion and extension activities.
Training load, hip muscle function and lower-limb movement patterns may be considered during rehabilitation.
-
Knee Bursitis:
Several bursae around the knee help reduce friction between nearby tissues.When irritated, they may cause localized pain, swelling and tenderness.
Different bursae can be involved, including prepatellar and pes anserine bursae, so the exact location of swelling is important during assessment.
-
Baker's Cyst:
A Baker's cyst is a fluid-filled swelling that forms behind the knee and is often associated with increased fluid within the knee joint.Some people have little or no symptoms, while others experience posterior fullness, tightness or discomfort.
Because other conditions can also cause swelling behind the knee or calf, a new or painful swelling should be appropriately assessed.
-
Post-Traumatic or Post-Surgical Knee Pain:
Fractures, ligament injuries, meniscal injuries and knee surgery may be followed by pain, swelling, stiffness, weakness or reduced confidence using the leg.Structured rehabilitation may be required to restore mobility, strength, balance, gait and functional activities.
-
Referred Pain:
Not every pain felt around the knee originates directly from the knee.Hip, lumbar spine or neural problems may occasionally produce symptoms around the knee or thigh.
Assessment of neighbouring regions may therefore be appropriate when the symptom pattern does not clearly match a local knee disorder.
Risk Factors for Developing Knee Pain
Several factors may increase mechanical demand on the knee or contribute to particular knee conditions:
- Sudden increase in walking, running or training load
- Repetitive squatting, stair climbing or jumping
- Sports involving cutting, pivoting or landing
- Previous knee injury or surgery
- Reduced quadriceps or hip muscle capacity
- Poor balance or neuromuscular control
- Inadequate recovery between high-load activities
- Age-related joint changes
- Higher body weight increasing knee joint loading
- Repetitive occupational or sporting demands
Having one or more risk factors does not establish a diagnosis. Symptoms need to be interpreted together with the patient's history, functional demands and clinical examination.
Symptoms of Knee Pain
The exact symptoms depend on the underlying condition. Common complaints include:
- Pain at the front, inner side, outer side or back of the knee
- Pain while walking or climbing stairs
- Difficulty squatting or getting up from a chair
- Knee stiffness or reduced range of motion
- Swelling around the knee
- Weakness during standing or walking
- Clicking or catching
- Locking or difficulty fully straightening the knee
- Instability or a feeling that the knee may give way
- Difficulty running, jumping or participating in sport
Knee Pain Symptoms That Should Not Be Ignored
Some knee symptoms require medical assessment rather than routine self-management alone.
Seek appropriate professional care if you experience:
- Severe pain after a significant fall, collision or twisting injury
- Visible deformity
- Inability to bear weight after an injury
- Rapid or substantial swelling following trauma
- A knee that becomes locked and cannot move normally
- Repeated major instability or giving way
- Increasing redness, warmth or fever
- Significant calf swelling or pain, particularly after surgery or immobilization
- Progressive weakness, numbness or neurological symptoms
- Persistent severe pain without a clear mechanical pattern
Sudden shortness of breath or chest pain associated with leg or calf swelling requires urgent medical attention.
How Knee Pain Is Diagnosed
Accurate assessment is important because osteoarthritis, ligament injury, meniscal injury, patellofemoral pain and tendon disorders can produce overlapping symptoms.
Clinical assessment may include:
- History of when and how symptoms began
- Location and behaviour of pain
- Mechanism of injury when trauma occurred
- Swelling and joint appearance
- Knee range of motion
- Quadriceps, hamstring and hip muscle strength
- Gait and lower-limb alignment
- Squat, step or other functional movement assessment
- Ligament stability testing when indicated
- Meniscal or patellofemoral assessment when clinically relevant
- Balance and proprioception
- Hip, ankle or lumbar assessment when referred symptoms are suspected
Imaging is not required for every person with knee pain.
When clinically indicated, investigations may include:
- X-ray
- MRI
- Musculoskeletal ultrasound
- Other medical investigations according to the suspected condition
The decision to use imaging should depend on the clinical presentation rather than being routine for every knee problem.
Physiotherapy Treatment for Knee Pain
There is no single physiotherapy treatment or exercise program suitable for every type of knee pain.
Rehabilitation depends on the underlying condition, severity and duration of symptoms, mobility, muscle capacity, joint stability and the patient's functional goals.
-
Education and Load Modification:
Activities that repeatedly aggravate symptoms should first be identified.Temporary modification of running, jumping, deep squatting, stair climbing, heavy lifting or high-load sports training may help manage symptoms while appropriate activity is maintained.
The aim is usually to modify excessive load rather than unnecessarily stopping all movement.
-
Pain and Swelling Management:
Acute injury or an irritated joint may require strategies to help manage pain and swelling.These may include appropriate activity modification, positioning, movement, compression or other interventions depending on the condition.
Persistent or rapidly increasing swelling requires assessment of the underlying cause.
-
Mobility and Range-of-Motion Training:
Pain, swelling, osteoarthritis, trauma or surgery may reduce knee flexion or extension.Mobility training may therefore focus on restoring:
- Knee flexion
- Knee extension
- Patellar mobility when indicated
- Related hip and ankle mobility
The intensity of exercise should match the condition and stage of recovery.
-
Progressive Strengthening:
Strengthening is an important component of rehabilitation for many knee conditions.Depending on the diagnosis, treatment may focus on:
- Quadriceps
- Hamstrings
- Hip abductors and extensors
- Calf muscles
- Functional lower-limb strength
-
Balance and Proprioception Training:
Ligament injuries and other knee conditions may affect joint control and confidence.Balance and proprioception training can be progressed from simple controlled tasks toward dynamic and sport-specific activities when appropriate.
-
Movement and Gait Retraining:
Some patients develop compensatory walking, stair or squat patterns because of pain, weakness or fear of movement.Rehabilitation may address:
- Walking pattern
- Stair climbing
- Sit-to-stand
- Squatting
- Landing and jumping mechanics
- Running or cutting technique when relevant
-
Manual Therapy:
Joint mobilization and other manual therapy techniques may be used in selected patients with pain or mobility restriction.Manual therapy should generally support, rather than replace, therapeutic exercise and active rehabilitation.
-
Sports and Return-to-Activity Rehabilitation:
For patients recovering from ACL, meniscus, ligament or other sports injuries, rehabilitation may eventually include:- Progressive running
- Jumping and landing
- Agility drills
- Change-of-direction training
- Sport-specific tasks
- Strength and functional testing
Return to sport should depend on recovery criteria and functional capacity rather than time alone.
-
Post-Surgical Rehabilitation:
Following procedures such as ACL reconstruction, meniscus surgery or other knee operations, rehabilitation may focus on:- Swelling control
- Restoring range of motion
- Muscle activation
- Progressive strength
- Balance and proprioception
- Gait retraining
- Return to work, daily activity or sport
The exact progression depends on the surgical procedure and the treating team's rehabilitation protocol.
-
Electrotherapy and Other Adjuncts:
Electrotherapy or other physical modalities may be used for selected patients when clinically indicated.These interventions should support, rather than replace, education, progressive exercise, load management and functional rehabilitation.
Why Early Assessment Matters
Persistent knee pain can gradually change the way a person walks, climbs stairs, squats or loads the affected leg.
Reduced activity may contribute to loss of strength and confidence, while compensatory movement may place additional demand on other parts of the lower limb.
Appropriate assessment helps determine whether symptoms are primarily related to joint changes, a ligament, meniscus, tendon, muscle, movement pattern or another structure.
Physiotherapy can then be directed toward the patient's actual impairments and functional goals instead of treating every type of knee pain in the same way.
When Should You See a Physiotherapist for Knee Pain?
Consider physiotherapy assessment if:
- Knee pain is interfering with walking or daily activities
- Stair climbing or squatting has become difficult
- Knee stiffness or movement restriction is developing
- Swelling keeps recurring
- The knee feels weak or unstable
- Pain repeatedly returns when activity increases
- You are recovering from a knee injury
- You are recovering after immobilization or knee surgery
If symptoms suggest fracture, infection, major ligament injury, a locked knee or another condition requiring medical investigation, appropriate medical assessment may be required before or alongside physiotherapy.
Why Asia Digital Physiotherapy & Orthopedic Rehabilitation Center (ADPORC) Is a Trusted Physiotherapy Center in Dhaka
ADPORC focuses on evidence-based physiotherapy for musculoskeletal, neurological and sports-related conditions.
- Expert Care by Dr. Saddam Hossain, PT
Structured rehabilitation under experienced clinical supervision. - Condition-Specific Physiotherapy Programs
Treatment plans designed according to assessment, pain stage and functional goals. - Advanced Electrotherapy and Rehabilitation Equipment
Modalities used only when clinically indicated. - One-on-One Supervised Sessions
Direct supervision supports safe and individualized rehabilitation. - Accessible Location in Jatrabari, Dhaka
Serving patients from Jatrabari, Dholaipar, Shonir Akhra, Doyagonj, Puran Dhaka, Keraniganj, Narayanganj and surrounding areas.
If you are looking for reliable physiotherapy for knee pain in Dhaka, ADPORC provides structured rehabilitation based on clinical assessment, movement limitations, strength, stability and individual functional goals.
Book Your Appointment Today
Do not let persistent knee pain continue to interfere with walking, climbing stairs, work, exercise or everyday activities. Appropriate assessment can help identify the likely source of symptoms and determine a suitable rehabilitation plan.
Visit ADPORC for professional physiotherapy assessment and rehabilitation for knee pain and related lower-limb conditions.
- Location: 270/1 Dholaipar, South Jatrabari, Dhaka-1204
- Call: 01950-935236
- Website: adporc.com
Asia Digital Physiotherapy & Orthopedic Rehabilitation Center