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Many people assume stiffness is simply a normal part of ageing, but persistent symptoms often indicate an underlying issue that can be treated. Understanding the cause is the first step towards finding the right treatment for stiff knees and preventing further loss of joint mobility.
Common Causes of Stiff Knees and Hip Stiffness
Joint stiffness can develop for several reasons, ranging from age-related wear and tear to inflammatory conditions and previous injuries.
Some of the most common causes include:
- Osteoarthritis – Osteoarthritis is one of the leading causes of knee and hip stiffness. As the protective cartilage within the joint gradually wears away, movement can become painful and restricted. Many people experience stiffness first thing in the morning or after periods of inactivity.
- Inflammatory Arthritis – Conditions such as rheumatoid arthritis can cause ongoing inflammation inside the joint. This inflammation may lead to swelling, discomfort, and progressive loss of joint mobility if left untreated.
- Previous Injuries – Meniscus tears in the knee or labral tears in the hip can affect how the joint moves. Even after the initial injury has healed, stiffness may persist if scar tissue develops or movement patterns change.
- Muscle Tightness and Inactivity – Long periods of sitting can contribute to tight muscles around the hips and knees. Over time, this may lead to loss of flexibility in the hips and reduced movement throughout the lower body.
- Bursitis and Other Inflammatory Conditions – Inflammation of the fluid-filled sacs around the joints, known as bursitis, can cause pain and stiffness that limit comfortable movement.
How Hip Mobility Affects Your Knees
The hips and knees work together whenever you walk, bend, squat, or climb stairs. When one joint is not moving properly, the other often compensates.
Loss of hip mobility can place additional stress on the knees, increasing the risk of stiffness, discomfort, and abnormal joint loading. Similarly, a loss of flexibility in the hips may alter the way you move, creating extra strain throughout the lower body.
For this reason, effective treatment often involves assessing both the hips and knees rather than focusing on a single joint. Addressing loss of hip mobility can help restore more natural movement patterns and reduce pressure on the knees.
Treatment Options for Stiff Knees
The most appropriate treatment for stiff knees depends on the underlying cause of your symptoms, your activity level, and how much the stiffness affects your daily life.
Physiotherapy and Exercise
Targeted exercises can help improve flexibility, strengthen supporting muscles, and restore joint function. Physiotherapy is often one of the first recommendations for patients experiencing stiffness and reduced mobility.
Medication and Joint Injections
Anti-inflammatory medications and corticosteroid injections may help reduce pain and inflammation, making movement more comfortable for some patients.
Regenerative Treatments
For suitable patients, regenerative treatments may provide an alternative to simply managing symptoms.
Platelet-rich plasma (PRP) therapy uses a concentration of the patient’s own platelets to support the body’s natural healing processes. Stem cell therapy may also be considered in certain cases to help improve pain, mobility, and overall joint function.
Arthrosamid injections are another treatment option for patients with knee osteoarthritis, helping to provide cushioning within the joint and potentially long-lasting symptom relief.
Lifestyle Changes
Maintaining a healthy weight, staying physically active, and avoiding prolonged periods of inactivity can all support joint health. Even regular walking and gentle stretching can help reduce stiffness and improve mobility over time.
When Should You Seek Professional Advice?
Occasional stiffness after exercise or long periods of sitting is common. However, it is important to seek professional assessment if you experience:
- Persistent stiffness lasting several weeks
- Swelling, redness, or warmth around a joint
- Reduced range of motion
- Locking or instability in the knee
- Ongoing loss of joint mobility affecting daily activities
- Pain that interrupts your sleep
Early assessment may help identify the cause of your symptoms and allow treatment to begin before stiffness becomes more difficult to manage.
Taking the Next Step Towards Better Mobility
Persistent knee or hip stiffness should not be ignored. Whether symptoms are caused by osteoarthritis, injury, inflammation, or inactivity, early intervention can help preserve movement and reduce discomfort.
The right treatment for stiff knees can improve function, restore confidence in movement, and help you return to everyday activities with greater comfort. If you are experiencing ongoing stiffness, speaking with a specialist can help you understand your options and create a treatment plan tailored to your needs.
If you are struggling with persistent stiffness, pain, or reduced mobility, contact Regenesis today to discuss your symptoms and find out which treatment options may be suitable for you.