This patient is rehabbing an anterior cruciate ligament (ACL) tear. At the time of this video, he was fifteen weeks out from re-tearing his left ACL. He was functioning very well because his left leg strength and dynamic knee stability showed no significant deficits.
The quarter-turn jump on an unstable platform is a great way to relearn dynamic stability for the knee. The platform moves forward and back, side to side, and up and down. To increase the challenge for level two, he is wearing strobe eyewear. It is noticeably more difficult for him to maintain balance because of the disruption in vision and proprioception. This exercise progression with the strobe eyewear helps to improve dynamic joint stability by training the sensorimotor system to enhance proprioception.
Most research and clinical commentary on strobe eyewear for knee rehabilitation has been with ACL patients. The research has been investigating neuroplasticity for visual-motor training.
The clinical reasoning is
❌ Disrupted afferent input
❌ Altered proprioception
❌ Altered efferent output
❌ Change in postural control
❌ Change in movement control
The change in movement control relies on visual feedback to maintain neuromuscular control. Treatment with strobe eyewear is utilized for visual-motor training with criterion-based exercise progressions.
As always — train both legs!
Effective and efficient rehab is criterion-based, not time-based.
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Evolve Physical Therapy
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Evolve Physical Therapy
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Always consult your physician before beginning any exercise program. STOP exercising if you experience any symptoms of weakness, unsteadiness, light-headedness/dizziness, chest pain or pressure, nausea, or shortness of breath.
Performing these exercises should not cause pain. If you experience pain while exercising, decrease the speed of your movement. If the pain persists - STOP. Mild soreness after exercising may be experienced after beginning a new exercise.
