A nurse is caring for a 68-year-old client with osteoarthritis of the knees. Which nursing intervention should be the priority to help manage the client's pain and maintain joint function?

Gentle range-of-motion exercises maintain joint flexibility, reduce stiffness, and prevent muscle atrophy, effectively managing osteoarthritis pain and function. Other options like bed rest or excessive NSAIDs can worsen symptoms or cause harm.

Understanding the Priority: Exercise as First-Line Management
For a client with knee osteoarthritis (OA), the priority nursing intervention is to teach and encourage gentle range-of-motion exercises. This is not merely a suggestion for general wellness; it is the cornerstone of conservative, non-pharmacological management as supported by high-level evidence. A Cochrane systematic review confirms that land-based therapeutic exercise provides significant benefits for people with knee OA, specifically in reducing joint pain and improving physical function ^[2][4]. The goal is to break the pain-inactivity cycle, where pain leads to reduced movement, which in turn causes muscle weakness and joint stiffness, ultimately worsening pain.

Why the Other Options Are Incorrect
- Option 1 (Complete bed rest) is contraindicated. Immobilization leads to muscle atrophy and joint stiffness, which destabilizes the knee and increases long-term disability. The evidence strongly favors active movement to maintain function ^[2][4].
- Option 3 (Ice packs for 30 minutes every hour) is an inappropriate application of cryotherapy. While cold therapy can temporarily relieve acute inflammation, applying ice for 30 minutes every hour poses a risk for skin and nerve damage. This intervention does not address the underlying need to maintain joint mobility and muscle strength.
- Option 4 (Advise OTC NSAIDs without consulting a physician) is outside the scope of nursing practice and unsafe. A nurse cannot advise a client to initiate a new medication regimen without a provider's order, especially in an older adult who may have contraindications such as renal impairment or gastrointestinal bleeding risk. Pain management is multimodal, but pharmacologic advice requires a prescriber.

The Physiologic Basis for Exercise in OA
The therapeutic effect of exercise is grounded in joint physiology. Articular cartilage is avascular and relies on the compression and decompression of movement to receive nutrients from synovial fluid and expel metabolic waste. Gentle range-of-motion exercises facilitate this process, nourishing the cartilage and maintaining its health. Furthermore, strengthening the quadriceps and hamstring muscles through isometric or low-impact exercise offloads the knee joint. A recent study on elderly patients with knee OA demonstrated that an isometric exercise intervention directly reduced knee pain perception, highlighting the link between muscle conditioning and analgesia . Stronger periarticular muscles act as shock absorbers, decreasing the mechanical stress placed directly on the damaged cartilage.

Translating Evidence to Nursing Practice
The priority nursing action is client education on a safe, daily exercise regimen. This aligns with international guidelines that identify exercise therapy as a dominant non-pharmacological intervention for knee OA ^[4]. A scoping review of randomized controlled trials reinforces that non-pharmacological approaches, including structured exercise, are central to managing chronic degenerative joint disorders like knee OA . The nurse must translate this evidence by teaching the client specific, low-impact activities such as straight-leg raises, quadriceps sets, or seated knee extensions. The focus is on consistency and proper technique to avoid overloading the joint, with the goal of reducing pain and preserving functional independence.