Author: Courtney Taum, MD
Co Author #1: Megan Kuba, MD
Co Author #2: Jennifer King, DO
Co Author #3: Justin Young, MD
Senior Editor: Carolyn Landsberg, MD
Editor: Jason Blackham, MD
Patient Presentation:
A 9-year-old previously healthy female presented to her PCP at an outpatient clinic with left knee pain, swelling, and inability to bear weight.
History:
Six days prior to presentation, she injured her left knee while jumping in a bounce house. She jumped from a mound to the floor on a soft surface and landed on her left knee, which was fully flexed. She immediately felt pain to the medial part of her knee and a popping sensation at the time of the landing. The knee became swollen with no obvious deformity. Following the injury, she was unable to bear weight on her left leg. It was managed at home with ice and ibuprofen over the next few days. Massage resulted in more swelling, and pain began to migrate to the lateral part of the knee. Due to persistent swelling, pain, and inability to bear weight, she was brought to the PCP for evaluation.
She was referred to a nearby injury walk-in clinic the same day for imaging.
Physical Exam:
Vitals were stable. She was awake, alert, and arrived being pulled in a cart with both knees slightly flexed without acute distress. There was a large left knee effusion with limited flexion and extension. She had pain with palpation over the lateral joint line. There was negative anterior drawer and Lachman tests. Sensation over the left knee and leg were intact, and she was able to move her toes without difficulty. She was unable to bear weight on left leg.
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