Knee Stability and Movement Coordination Impairments: Knee Ligament Sprain: Clinical Practice Guidelines Linked to the International Classification of Functioning, Disability, and Health from the Orthopaedic Section of the American Physical Therapy Association

. Author manuscript; available in PMC: 2011 Aug 21.

Published in final edited form as: J Orthop Sports Phys Ther. 2010 Apr;40(4):A1–A37. doi: 10.2519/jospt.2010.0303

Single-Limb Crossover Hop Test for Distance
ICF category	Measurement of activity limitation, jumping
Description	The distance a patient travels when 3 maximal crossover forward hops are performed.
Measurement method	The patient stands on the uninvolved limb, with the toes on the starting line. The patient performs 3 consecutive maximal hops as far as possible forward and lands on the same limb while alternately crossing over a 15-cm strip on the floor. The distance hopped is measured from the starting line to the point where the patient’s heel landed after the third hop. The patient is given 2 practice trials and 2 recorded trials. The test is repeated on the involved limb. Wearing a functional knee brace is recommended for all patients postinjury or less than 1 year postsurgery.
Nature of variable	Continuous
Units of measurement	Centimeters
Measurement properties	Test-retest reliability Healthy individuals: ICC_2,3 = 0.93, SEM = 17.74 cm, MDC₉₅ = 49.17 cm¹³⁶ Mean distance: 637.40–649.19 cm LSI reliability in patients with ACL reconstruction¹²⁹ ICC_2,1 = 0.84 MDC₉₀ = 12.25% Range of mean LSI at 16 weeks post-ACL reconstruction = 82.2%–84.4% Mean LSI at 22 weeks post-ACL reconstruction = 88.3%