Hand Anatomy

The [blank_start]extensor indicis[blank_end] can be surgically transferred into the thumb by wrapping it around the ulnar side to the palmar aspect of digit 1 to enable thumb opposition

If the extensor digiti minimi tendon is missing, as it is in about 30% of the population, it is generally replaced by a [blank_start]junctura tendinum[blank_end], or intertendinous connection.

The extensor digiti minimi is absent in about 30% of the population. If your client was part of that 30%, what structure might they have instead?

Rheumatoid arthritis is a common cause of [blank_start]subluxed[blank_end] extensor tendons at the metacarpal head

What three tendons make up the anatomical snuffbox?

The palmaris longus muscle attaches primarily into the [blank_start]palmar aponeurosis[blank_end]

Linburg-Comstock Syndrome is a connection between two tendons in the wrist, due to a common evolutionary tendon. On each hand, label one of the tendons that is involved in this connection.

The function of the transverse retinacular ligaments is to limit the dorsal movement of sagittal bands at the heads of the proximal phalynx.

What type of splint is appropriate for this deformity? Drag the splint name to the joint it would be worn on.

To cause a Boutonniere Deformity, the lateral bands must fall to the [blank_start]palmar[blank_end] aspect of the PIP joint

Parents often swing young children by the arms while walking or playing. This movement is risky for children under age 4 because the [blank_start]annular ligament[blank_end] is stretchy and the head of the [blank_start]radius[blank_end] can dislocate.

The ulnar nerve is exposed in the cubital tunnel of the elbow.

After a wrist injury, supination is more difficult to compensate for than pronation.

Which structure sits distal to the ulnar head and supports the distal radio-ulnar joint?

When wrist is flexed, fingers passively [blank_start]extend[blank_end]. When wrist is extended, fingers passively [blank_start]flex[blank_end].

This injury is called...

Instability in the interphalangeal (IP) joint or Metacarpophalangeal (MCP) joint of the thumb can lead to arthritis. Hyperextension of the IP joint leads to pain in the [blank_start]MCP[blank_end]. Hyperextension of the MCP leads to pain in the [blank_start]CMC[blank_end].

Label the arches of the hand

Injury to the radial nerve causes loss of active wrist [blank_start]extension[blank_end], as all radial-innervated muscles would lose innervation, except for the lumbricals and interossei.

The earliest sensation to return after a nerve injury is: