Guidelines

What movements are possible at the thumb?

What movements are possible at the thumb?

The thumbs actions are flexion, extension, abduction(palmar and radial), adduction and opposition. Abduction is defined as motion away from second metacarpal and adduction is motion towards second metacarpal. It occurs at the carpometocarpal joint.

How many movements are in the thumb?

The muscles of the thumb are nine skeletal muscles located in the hand and forearm. The muscles allow for flexion, extension, adduction, abduction and opposition of the thumb.

What is normal thumb range of motion?

Normal Range of Motion Reference Values

Typical Range of Motion
Elbow Extension/Flexion 0/145
Thumb basal joint Radial Adduction/Abduction Contact/60
Thumb Interphalangeal Hyperextension/Flexion 15H/80
Thumb Metacarpophalangeal Hyperextension/Flexion 10/55

What is normal thumb flexion?

Results: The average flexion angle was 59.5 degrees (from 16 to 90). The average extension angle was 7.9 degrees (from -32 to 58).

What is reposition movement?

Opposition and Reposition Opposition is the thumb movement that brings the tip of the thumb in contact with the tip of a finger. This movement is produced at the first carpometacarpal joint, which is a saddle joint formed between the trapezium carpal bone and the first metacarpal bone.

What is normal thumb MCP flexion?

Results: The volunteer population mean thumb MCP maximum flexion was 77 degrees range, 40 degrees -126 degrees ). Range of motion in hyperextension varied from 0 degrees to 72 degrees, with a mean of 35 degrees. Total ROM was from 55 degrees to 176 degrees, with a mean of 110 degrees.

What muscles are in the thumb?

The thenar muscle group is found at the base of the thumb, forming the muscle bulk on the thumb side of the hand. It is comprised of three muscles: the abductor pollicis brevis, the flexor pollicis brevis, and the opponens pollicis.

What is normal range of motion for thumb abduction?

Thumb Carpometacarpal Joint Abduction

Test Position Normal Range
Subject sitting with forearm resting on table Wrist neutral Forearm neutral Stabilize carpals to prevent wrist motion 70° (American Academy of Orthopedic Surgeons)
Goniometer Alignment Normal End Feel

What are the muscles called that move the thumb?

Longer thumb relative to the fingers.

  • Enlarged thenar muscles (the three muscles,Abductor Pollicis Brevis (APB),Flexor Pollicis Brevis (FPB),and Opponenes Pollicis (OP)) that contribute to thumb’s opposition movement and hand’s dexterity (Figure 4 ).
  • Joint orientations among the trapezium,metacarpal,and capitate (Figure 5 ).

    • What is is the movement called in the thumb?

    Circumduction is the technical term for “moving around in a circle”. This motion occurs at the carpometacarpal joint of the thumb, at the thumb base. This joint is commonly affected by arthritis. Abduction and adduction are used to describe the thumb’s motion out of and into the palm, respectively.

    Imaeda et al (1992) stated that IP flexion in the normal thumb is up to 80 Greene and Heckman (1994) stated that MP flexion was on average 50and the average IP flexion was 65 Joseph (1951) radiographically examined 90 men and 54 women and reported that the mean MP flexion in men was 53on the right and 52on the left.

    What is the movement of the fingers called?

    Athetosis is a symptom characterized by slow, involuntary, convoluted, writhing movements of the fingers, hands, toes, and feet and in some cases, arms, legs, neck and tongue. Movements typical of athetosis are sometimes called athetoid movements.