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Medical Condition Guide

Knee Injury

Knee injuries are one of the most frequently litigated orthopedic conditions in personal injury cases, occurring in vehicle accidents from dashboard impact or airbag deployment, pedestrian knockdowns, falls, and workplace incidents. The knee is a complex joint stabilized by four major ligaments — the ACL, PCL, MCL, and LCL — as well as two cartilage cushions (menisci) and the kneecap. Common injury patterns include ACL tears from sudden twisting or impact, meniscus tears from compression or rotation, patellar fractures from direct impact, and multiligament injuries in high-energy trauma. Knee injuries can be immediately debilitating and, if inadequately treated, lead to chronic instability, progressive cartilage loss, and early-onset osteoarthritis requiring eventual joint replacement. Surgical intervention — particularly ACL reconstruction and meniscectomy — is common, with rehabilitation spanning many months. Insurance companies frequently argue that knee injuries reflect pre-existing degenerative changes rather than accident-related trauma. MRI evidence taken shortly after the accident, combined with a medical causation opinion from an orthopedic surgeon, is critical to defeating pre-existing condition defenses.

For informational purposes only. Not legal advice. Consult a licensed attorney.

Symptoms

The following symptoms are commonly reported by accident victims diagnosed with Knee Injury. Symptoms should be reported to your treating physician at every appointment to ensure they are documented in your medical record.

  • 1Immediate pain and rapid swelling (effusion) within hours of injury
  • 2A popping or tearing sensation at the moment of impact
  • 3Instability — a feeling that the knee "gives way" when walking
  • 4Limited range of motion and inability to fully straighten or bend the knee
  • 5Locking or clicking sensations (meniscus involvement)
  • 6Inability to bear weight on the affected leg

Treatment & Recovery

Typical Treatment

RICE protocol initially, arthroscopic surgery (ACL reconstruction, meniscectomy, cartilage repair), physical therapy for 4–9 months post-surgery, and eventual joint replacement for end-stage arthritis.

Recovery Timeframe

ACL reconstruction: 9–12 months to full activity. Meniscectomy: 4–6 weeks. Total knee replacement (future): 3–6 months.

Legal Documentation Tip

Get an MRI within days of the accident to establish the injury pattern and timing before insurers claim degeneration. Request a narrative causation letter from your orthopedic surgeon directly linking the specific injury findings to the accident mechanism. If arthritis develops years later, a future medical cost opinion from your surgeon should be part of the original damages claim, as post-traumatic arthritis is a known sequela of traumatic knee injuries.

For informational purposes only. Not legal advice. Consult a licensed attorney.

Estimated Medical Cost Range

$25,000 – $100,000 for surgery and rehabilitation; total knee replacement adds $40,000–$60,000

Cost estimates reflect typical treatment pathways in the United States and vary significantly based on injury severity, geographic location, insurance coverage, and whether surgical intervention is required. These figures are general ranges only and are not a guarantee of costs in any individual case.