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Active insufficiency occurs when a multi-joint muscle reaches a shortened length where it can no longer apply a good effective force. Passive Insufficiency. When a muscle cannot stretch anymore, occurs with the antagonist.Click to see full answer. Also, what is the difference between passive and active insufficiency?Active insufficiency reflects the inability of a multijoint muscle to apply an adequate force in all degrees of motion. Passive Insufficiency refers to the inability of a multi-joint muscle to lengthen to a degree that allows full range of motion of all the joints it crosses simultaneously.Also, what does passive insufficiency mean? Passive insufficiency occurs when the multi-joint muscle is lengthened to its fullest extent at both joints, but also preventing the full ROM of each joint it crosses. In respect to this, what type of muscle is affected by active insufficiency? A muscle of the quadriceps, known as the rectus femoris, enters active insufficiency in this position. It shortens at both the hip and the knee. This can occur with the leg curl as well, as too much hip extension with knee flexion will harm the hamstrings.What are two joint muscles?Two Joint Muscles or TJM’s are muscles that cross two joints of the body and therefore perform more than one joint function. For example, the Rectus Femoris (considered one of the quads) actually crosses both the hip and knee joints and performs hip flexion and knee extension. It both lifts and straightens your leg.

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