This is a study in 3 phases that will assess the feasibility and utility of handheld home ultrasound (HHUS) in a patient's home to assess whether a painful episode in the elbow, knee or ankle is a bleed or not.
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Outcome 1.1: Participant understanding of basic ultrasound transducer concepts and ability to perform basic positioning maneuvers.
Timeframe: 3 months
Outcome 1.2: Participating subjects are able to perform basic transducer positions and identify basic structures of the elbow, knee and ankle.
Timeframe: 3 months
Outcome 1.3: Participating subjects can perform what they learned during their training at the HTC in outcome 1.1 and outcome 1.2 at home and transmit images to the HTC.
Timeframe: 3 months
Outcome 2.1: Subjects will be able to attain and transmit images of their joint spaces to the HTC via telemedicine utilizing the HHUS technology they learned in phase 1 and React App.
Timeframe: 6 months
Outcome 2.2: Accuracy of the assignment of "bleed" vs. "non-bleed" will be determined on the stationary GE LS8 Logiq Pro in the HTC.
Timeframe: 6 months
Outcome 3.1: To establish how accurate patient reported bleeding is compared to HHUS utilizing tele-ultrasound.
Timeframe: 3 years
Outcome 3.2: To establish more accurate bleeding data for the EmiMSKUS study.
Timeframe: 3 years