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"Fight-bite": not just a hand problem.

C P T Jay B Cook1, Maj Jeffrey B Knox, Robert L Wimberly

  • 1*Tripler Army Medical Center, Orthopedic Surgery Service, Honolulu, HI †Department of Orthopedics, Texas Scottish Rite Hospital for Children and Children's Medical Center, Dallas, TX.

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Summary
This summary is machine-generated.

Human bites to the knee can cause serious septic arthritis, often missed initially. Prompt recognition and treatment are crucial for these challenging joint infections.

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Area of Science:

  • Orthopedics
  • Infectious Diseases
  • Traumatology

Background:

  • Human bite wounds to the knee are uncommon but can lead to severe joint infections.
  • The 'fight bite' phenomenon, well-known in hand injuries, can also occur at the knee.

Observation:

  • Two cases of polymicrobial septic arthritis of the knee following human bites are presented.
  • Diagnosis was delayed as the intra-articular nature of the bite wound was initially unrecognized.
  • Knee flexion during injury allowed tooth penetration of the quadriceps tendon, inoculating the joint.

Findings:

  • Septic arthritis presented 72 hours post-injury in both cases.
  • Infections were polymicrobial and challenging to treat.
  • Treatment required multiple surgical interventions and extended antibiotic therapy.

Implications:

  • Human knee bites necessitate urgent evaluation, similar to hand fight bites.
  • Delayed diagnosis can lead to severe joint morbidity.
  • Increased awareness of this injury pattern is needed for timely management.