Interphalangeal Joints of the Hand
(Redirected from Interphalangeal joint of thumb)
Description
Name
- Interphalangeal Joint
- Distal Interphalangeal Joint (DIPJ)
- Proximal Interphalangeal Joint (PIPJ)
General
- Interphalangeal Joints of the hand are synovial hinge joints
- Span the proximal, middle and distal phalanx of the hand
Nomenclature
- Digits 2-5
- Proximal Interphalangeal Joint (PIPJ): located between the proximal and middle phalanx
- Distal Interphalangeal Joint (DIPJ): located between the middle and distal phalanx
- Thumb: Only has two phalanges, so it is termed the interphalangeal joint
Articular surfaces
- Head of proximal phalanx
- Base of middle phalanx
- Head of middle phalanx
- Base of distal phalanx
Ligaments
- Medial collateral ligament
- Lateral collateral ligament
Actions
- Permit fine motor movements of the dingers
- Facilitate movement only in flexion and extension
Vascular Supply
- Proper palmer digital arteries
Innervation
- Proper palmer digital nerves
Clinical Significance
- Finger Arthritis
- Phalanx Fractures Hand
- Proximal Interphalangeal Joint Dislocation
- Distal Interphalangeal Joint Dislocation
- Boutonniere Deformity
- Swan Neck Deformity
- Rheumatoid Arthritis
- Osteoarthritis Main