This document discusses arthrokinematics, or accessory motions that occur between adjacent joint surfaces. It defines the main types of motions as roll, slide, spin, compression, and traction. A key concept covered is the convex-concave rule, which states that convex joint surfaces generally roll and glide in opposite directions, while concave surfaces roll and slide in the same direction. The document also addresses joint play and how it allows for freedom of movement between articular surfaces.

1. ARTHROKINEMATICS
Shweta kulkarni
For 2nd year B.P.Th
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2. OBJECTIVES
TYPES OF MOTIONS
CONVEX-CONCAVE RULE
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3. Arthrokinematics (accessory motions) is
used to refer movement between adjacent
joint surfaces.
Arthrokinematics or accessory motions
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4. JOINT
SHAPES
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5. TYPES OF
MOTIONS
ROLL
SLIDE
SPIN
COMPRESSION
TRACTION
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6. ARTHROKINEMATICS
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7. ARTHROKINEMATICS
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8. Convex-concave
rule
Convex joint surfaces generally roll and glides
in opposite directions ,whereas concave joint
surfaces generally roll and slide in same
direction
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9. Applied
aspect
 Joint play- It is the give in the articular surfaces to be free
to move in the appropriate direction
 The freedom of movement of one articular surface on
another can be tested by an examiner when the joint is in
loose pack position
 If the supporting joint structures are excessively lax , the
joint may have too much play and become unstable or
vice versa
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10. 10
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11. Q&A
 Arthrokinematics can be voluntarily isolated under normal conditions ? True
or false
 In spin there is rotation of a segment about a stationary mechanical axis ?
True or false
 _______ is the decrease in the joint space between bony partners.
 _________ is the longitudinal pull .
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12. ARTHROKINEMATICS
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