An exploratory study into the effects of a 20 minute crushed ice application on knee joint position sense during a small knee bend

Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine
Jill AlexanderKaren May

Abstract

The effect of cryotherapy on joint positioning presents conflicting debates as to whether individuals are at an increased risk of injury when returning to play or activity immediately following cryotherapy application at the knee. The aim of this study was to investigate whether a 20 min application of crushed ice at the knee immediately affects knee joint position sense during a small knee bend. Pre- and post-intervention. University movement analysis laboratory. Eleven healthy male participants. Kinematics of the knee were measured during a weight bearing functional task pre and post cryotherapy intervention using three-dimensional motion analysis (Qualisys Medical AB Gothenburg, Sweden). Tissue cooling was measured via a digital thermometer at the knee. Results demonstrated significant reductions in the ability to accurately replicate knee joint positioning in both sagittal (P = .035) and coronal (P = .011) planes during the descent phase of a small knee bend following cryotherapy. In conclusion a 20 min application of crushed ice to the knee has an adverse effect on knee joint repositioning. Team doctors, clinicians, therapists and athletes should consider these findings when deciding to return an athlete to functional weig...Continue Reading

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