What is the base of the proximal phalanx?
What is the base of the proximal phalanx?
The base end of the proximal phalanx is concave in shape where it connects to the metatarsal bone. The head of the proximal phalanx connects to the intermediate phalanx in a trochlear fashion that allows for articulation.
Does a proximal phalanx fracture need surgery?
If a proximal phalanx fracture is displaced or if the fracture pattern is unstable it is likely that surgery will be recommended. If you need surgery it is best that this be performed within 2 weeks of your fracture. Displaced fractures are likely to heal with shortening, or angulation, or rotation.
Where is proximal phalanx of finger?
The proximal phalanx of the fingers is the proximal, or first bone, in the fingers when counting from the hand to the tip of the finger. There are three phalanges in each finger. The proximal phalanx is the largest of the three bones in each finger; it has joints with the metacarpal and with the middle phalanx.
How do you know if proximal phalanx is broken?
Other symptoms of a fractured finger bone include:
- Swelling.
- Bruising.
- Stiffening in the finger or joints.
- Swelling and pain extends beyond the injured area.
- Numbness.
- Bruising and swelling underneath the fingernail, as well as the fingertip.
What type of bone is the proximal phalanx?
The phalanges of the hand are the group of small bones that comprise the bony core of the digits (fingers) of the hand. Even though the phalanges are small in size, they are classified as long bones because of their structural characteristics; each phalanx consists of a shaft, distal head and a proximal base.
Where is the proximal bone?
The proximal phalanges (hand) are the bones that are found at the bottom of the finger. They are named proximal because they are the closest phalanges to the metacarpals. There are fourteen phalanges in each hand. Three are located in each long finger, and two are located in the thumb.
How long does it take for a proximal phalanx fracture of the foot to heal?
Most fractures heal without any problems in about six weeks. However, it may take three to six months for your symptoms to settle completely – these can include pain or discomfort, stiffness, decreased strength, and swelling. The bones may take longer to heal if you suffer from diabetes or if you smoke.
How do you manage a proximal phalanx fracture?
Immobilization in an “intrinsic-plus” position through metacarpophalangeal (MCP) joint flexion reduces the displacing force of the interossei and also shifts the extensor tendon distally so that two-thirds of the proximal phalanx is embraced by the extensor mechanism, adding to the overall fracture stabilization.
What does the proximal phalanx do?
It is largest proximally and tapers to the distal end. The proximal part of the phalanx presents a broad base for articulation with the middle phalanx, and an expanded distal extremity for the support of the nail and end of the toe.
How long does it take for a proximal phalanx to heal?
Many stable phalanx fractures can be treated nonoperatively through close monitoring until clinical healing is noted. Proximal phalanx fractures will often be clinically healed 4 weeks status post injury, at which time it is unlikely that the fracture will displace.
Why does my proximal phalanx great toe hurt?
Pain in your big toe joint can be caused by injuries like turf toe, problems with how your foot moves, or diseases like osteoarthritis and gout. The treatment you receive depends on what is causing your big toe joint pain. In some cases, you may be able to heal your big toe joint with rest, ice, and sometimes crutches.
What is the proximal phalanx of the hand?
Surfaces and Joints of the Proximal Phalanx. However, the thumb is an exception, as it doesn’t have a middle phalanx, so the proximal phalanx head directly articulates with the distal phalanx [4]. On the palmar side of the hand, the crease in the base of each finger (right where the fingers are attached to the palm) is the PIP joint.
What are the K-wire fixation methods for proximal phalanx fracture?
Kirschner wire (K-wire) fixation methods for proximal phalanx fracture. (a) Transarticular technique where the K-wire crosses the metacarpophalangeal joint prior to crossing the fracture site. (b) Periarticular technique where the pins start radial and ulnar from the base of the proximal phalanx and cross the fracture site.
What are the treatment options for base fractures in the phalanx?
Treatment of base fractures in the proximal phalanx depends on the fracture type, the degree of displacement, and whether fracture reduction is stable or not. In this chapter, intervention options are reviewed focusing on restoration of finger function and to a lesser extent on exact reposition of the fractured digit.
Why do lateral bands cloak the proximal phalanx?
In the proximal third, the lateral bands cloak the proximal phalanx so much so that retained hardware in these locations invariably results in friction with the extensor mechanism, limiting achievement of full range of motion.
