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To investigate the association between grip strength and preoperative pain threshold as measured by pressure algometer and validated pain outcome surveys.
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A minimum of 200 patients, 100 hip and 100 knee arthroplasty participants, will be recruited for this study. Preoperatively, patient pain threshold will be recorded both objectively (Pressure algometer) and subjectively (brief pain inventory). In terms of location, objectively this will be tested during the preoperative visit in clinic by the approved, trained research staff, as well as the subjective brief pain inventory.
Objective pain measure: Pressure algometer will be obtained in the standard fashion as follows: the probe is applied at a 90 degree angle to the skin at a constant rate of 10kPa/s to minimize the impact of the examiner's reaction time on recorded pain thresholds. The participant is instructed by the measurer to say "stop" when the sensation of pressure became the very first sensation of pain. There will be three spots to test patients, one for familiarity of the testing and the other 2 for data collection.
Subjectively, the brief pain inventory is a validated pain outcome measure which will be filled out by the participant during their preoperative clinic visit.
Postoperative, the study team will ask the participant at the 6 week mark:
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