The meniscus is a crescent-shaped cartilage pad cushioning the knee joint and absorbing shocks between the femur and tibia. Meniscal tears cause pain, catching sensations and swelling. Concurrent arthritis further complicates rehabilitation in middle-aged and older patients. This article outlines an integrated treatment approach for this challenging combination of knee pathologies based on UK protocols.
Understanding the link
- Older adults often have underlying osteoarthritis causing cartilage thinning even pre-symptomatically
- Knee meniscus tears then occur through minor trauma from daily activities more easily due to the fragile degenerative joints
- These complex tears fail to heal well due to poor blood supply and can accelerate arthritis progression through increased instability and bone-on-bone pressures
So, optimal treatment should address both pathologies simultaneously.
Initial conservative management
The NHS recommends starting with:
- Activity modification – Avoid impact exercise initially
- Physiotherapy exercises – Improve leg/core strength and flexibility
- Anti-inflammatory medications – Relieve pain and swelling
- Weight loss support – Takes pressure off damaged knee joint
- Orthoses/bracing – To reduce symptoms
These strategies reduce instability and mechanical stresses through the damaged meniscus to provide the best natural healing environment possible.
Second-line injection therapy
If the above efforts provide insufficient relief after 6 weeks, UK guidelines support considering:
- Corticosteroid injections – Potent anti-inflammatory effects
- Viscosupplement injections – Lubricates arthritic joint
- Platelet-rich plasma – Encourages tissue regeneration
These can dampen inflammation and offer symptom relief when other measures plateau. Choices are individualised based on arthritis severity and meniscus tear type.
When is surgery indicated?
Referral for arthroscopic meniscectomy keyhole surgery is typical if:
- Persistent catching/locking sensations in knee – Rim instability
- Failure to regain stability/strength with thorough non-operative rehabilitation
- Increasing pain/swelling refractory to conservative measures
This trims damaged unstable flaps to smooth the meniscus contour preventing further catching. Simultaneously, arthroscopic debridement can smooth areas of arthritic cartilage damage and wash out inflammatory mediators. Supporting recovery with structured physiotherapy improves long term outcomes from surgery.
Case study examples
Below are typical UK treatment pathways for different patients with arthritis and meniscus tears:
55 year old, obese, office worker – A complex degenerative meniscus tear with mild arthritis responded well to weight loss, physiotherapy and using a knee brace for 9 months allowing return to normal functioning.
62 year old retired builder – Existing advanced osteoarthritis with new large meniscus tear and mechanical symptoms failed to improve after cortisone injections and intensive conservative rehabilitation. Arthroscopic partial meniscectomy and debridement provided effective pain relief and resumed previous activity at 8 months.
This demonstrates a spectrum of approaches tailored to individual cases.
Conclusion
In summary, conservatively treating arthritis and meniscal tears concurrently is the first-line to provide opportunity for small tears to heal while alleviating arthritic pressures. Stepped-up injection therapies relieve recalcitrant inflammation. If mechanical deficits persist despite rigorous rehabilitation efforts, a combined arthroscopic clean-up procedure reliably reduces instability and long term morbidity. This integrated approach maximises the possibility of restoring normal knee function in this complex patient group.
References
- NHS (2024). Torn meniscus. https://www.nhs.uk/conditions/meniscus-tear/
- Patient.info. (2024). Meniscal Tears. https://patient.info/bones-joints-muscles/sports-injuries/meniscal-tears-knee-cartilage-injuries
