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Active and Passive Insufficiency.pptx
- 1. Dr Jitendra Sharma Active and Passive Insufficiency DrJitendra Sharma
- 2. Dr Jitendra Sharma • Insufficiency isthe term used for describing the inability of a muscle to generate adequate force bring out a desired action / movement. • In absence of disease process, muscle insufficiency is seen when the length tension relation is altered. • Muscle lengthened = Passive insufficiency • Muscle shortened = Active insufficiency • Active and Passive insufficiency is seen only in two joint or multi-joint muscles.
- 3. Dr Jitendra Sharma • Activeinsufficiency occurs when a multi-joint muscle shortens over BOTH joints simultaneously, and hence, creates so much slack, that muscle tension is almost completely lost. It cannot maintain or generate active tension. • 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. The muscle cannot elongate further.
- 4. Dr Jitendra Sharma • Rectus femoriscauses Hip flexion and Knee extension. It cannot cause full ROM together of hip flexion and knee extension….this is active insufficiency. • Similarly, Flexor Digitorum Profundus loses capability to make a tight fist when the wrist is flexed…….active insufficiency. • When the hip is fully flexed, the knee cannot be extended to fullest without pain or damage…………..passive insufficiency.
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- 7. Dr Jitendra Sharma Relationship between Activeand Passive Insufficiency? • When the agonist is trying to contract, the antagonist is relaxing/ lengthening. • The extensibility of the antagonist therefore is a factor in limiting capability of the agonist……passive insufficiency. • Therefore, the agonist becomes: • Actively insufficient when it is placed in shortened position. • Passively insufficient if the antagonist is tight.
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