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Arthritis of left knee joint

Last edited: 4/15/2026

Overview

Arthritis of the left knee joint encompasses various inflammatory and degenerative conditions affecting the knee's articular cartilage, synovial membrane, and supporting structures, leading to pain, stiffness, and reduced function 1.

Diagnosis

  • Key Diagnostic Criteria: Presence of knee pain, swelling, and functional impairment.
  • Recommended Tests: MRI for detailed imaging, though limitations exist for certain lesions.
  • Gold Standard: Arthroscopy for definitive diagnosis of chondral lesions, meniscal tears, and atypical synovial pathologies 1.
  • In-Office Needle Arthroscopy (IONA): Considered for outpatient settings when MRI is inconclusive, performed by interventional musculoskeletal radiologists 1.
  • Management

  • First-Line Treatments: Nonsteroidal anti-inflammatory drugs (NSAIDs) for pain and inflammation.
  • Physical Therapy: Strengthening and flexibility exercises tailored to individual needs.
  • Adjunctive Treatments: Intra-articular corticosteroid injections for symptom relief 1.
  • Advanced Interventions: Arthroscopic debridement or repair for structural issues identified 1.
  • Special Populations

  • Pregnancy: Limited specific guidance; NSAIDs use should be cautious due to potential fetal risks 1.
  • Elderly: Emphasis on conservative management with physical therapy and minimal invasive interventions to avoid complications 1.
  • Key Recommendations

  • Utilize MRI as the primary imaging modality but consider In-Office Needle Arthroscopy (IONA) when MRI findings are inconclusive for definitive diagnosis of intra-articular knee pathologies (Evidence: Moderate) 1.
  • Employ NSAIDs and physical therapy as initial management strategies for pain and functional improvement (Evidence: Moderate) 1.
  • Consider intra-articular corticosteroid injections for acute exacerbations of knee arthritis symptoms (Evidence: Moderate) 1.
  • References

    1 Arrigoni F, Mazzoleni MG, Calvisi V, Masciocchi C. In-Office Needle Arthroscopy (IONA): may a traditionally orthopedic procedure enter the portfolio of interventional radiology?. La Radiologia medica 2022. link

    Original source

    1. [1]

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