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    A peripheral nerve sheath tumor was discovered in a military officer's knee, causing deep medial pain during running. Early physical therapy referral led to diagnosis and treatment of this benign condition.

    Keywords:
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    Area of Science:

    • Orthopedics
    • Sports Medicine
    • Neurology

    Background:

    • Direct access physical therapy is increasingly utilized by military personnel for musculoskeletal complaints.
    • A 26-year-old female military officer presented with a 4-month history of intermittent left medial knee pain exacerbated by running.

    Observation:

    • The patient initially sought physical therapy directly for her knee pain.
    • Following physical therapy, she was referred to her primary care manager for further evaluation.
    • Magnetic resonance imaging (MRI) of the knee was performed.

    Findings:

    • MRI revealed a peripheral nerve sheath tumor with benign features.
    • The tumor was located within the distal gracilis muscle.
    • The tumor was noted to be attached to the saphenous nerve.

    Implications:

    • This case highlights the importance of considering uncommon diagnoses, such as peripheral nerve sheath tumors, in the differential diagnosis of knee pain in active individuals.
    • Early recognition and appropriate imaging can lead to timely diagnosis and management of nerve-related pathologies.
    • Physical therapists play a crucial role in the identification and referral pathway for patients with persistent or unusual symptoms.