T84.032

Clinical Causes: Wear and tear of the prosthetic materials over time Bone resorption around the implant, weakening the bond Incorrect surgical placement or fixation of the prosthesis Infection leading to loosening of the implant Trauma or injury affecting the knee after surgery Poor bone quality or osteoporosis Mechanical stress or overuse of the joint

Key Symptoms: Persistent knee pain, especially during movement A feeling of instability or wobbliness in the knee Reduced range of motion or stiffness Swelling or inflammation around the joint Locking or catching sensations within the knee Decrease in overall function or difficulty walking Possible visible or palpable looseness of the prosthesis

Diagnosis Path: Diagnosis of mechanical loosening involves a combination of clinical evaluation and imaging studies. Healthcare professionals may perform a physical exam to assess joint stability and look for signs of swelling or tenderness. Imaging techniques such as X-rays are essential to visualize the position of the implant, detect gaps, or signs of bone loss. In some cases, additional diagnostic tools like CT scans or bone scans are used for thorough assessment. The diagnosis confirms the presence of loosening and helps determine the severity and suitable management plan.

Treatment Protocols: Managing mechanical loosening typically requires surgical intervention. The primary approach involves revision surgery to replace the loosened prosthetic components and restore joint stability. The specific procedures may include removing the old implant, addressing any bone defects, and implanting new prosthetic parts. Postoperative care includes physical therapy to regain strength and mobility, along with medications to manage pain and prevent infection. In some cases, conservative measures like physical therapy and activity modification may help alleviate symptoms temporarily, but revision surgery is often necessary for long-term resolution.