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Dr
Jitendra
Sharma
Active and Passive
Insufficiency
Dr Jitendra Sharma
Dr
Jitendra
Sharma
• Insufficiency is the 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.
Dr
Jitendra
Sharma • Active insufficiency 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.
Dr
Jitendra
Sharma
• Rectus femoris causes 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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healthcareeducationhealth
Dr
Jitendra
Sharma
PASSIVE INSUFFICIENCY
NORMAL
ACTIVE INSUFFICIENCY
Dr
Jitendra
Sharma
Length Tension Relationship
Dr
Jitendra
Sharma
Relationship between Active and 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.
Dr
Jitendra
Sharma
QUESTIONS??

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Active and Passive Insufficiency.pptx

  • 2. Dr Jitendra Sharma • Insufficiency is the 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 • Active insufficiency 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 femoris causes 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.
  • 7. Dr Jitendra Sharma Relationship between Active and 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.