Exam 4 part 3 Bones of the lower leg Flashcards Preview

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Flashcards in Exam 4 part 3 Bones of the lower leg Deck (19):
1

The tibia articulates with:

Condyles of the femur & the head of the fibula (proximally)
With the talus & distal end of the fibula (distally)

2

The ossification of the tibia:

- Primary for the shaft
- 3 secondary ossification centers for the proximal end, distal end & the tibial tuberosity

3

Order of ossification of the tibia

Shaft- 7- 8th week of development
Proximal end - just before birth
Distal end
Tibial tuberosity
Distal end fuses
Proximal end fuses

4

Articulation of the fibula

Ankle joint
Proximal & distal tibiofibular joints

5

Ossification of the fibula

- Primary for the shaft
- Secondary ossification centers for the distal & proximal ends of the bone

6

Order of ossification of the fibula

Shaft - primary
Distal end & proximal end - 2nd
Proximal end fuses
Distal end fuses

7

Bones of the foot

- 7 tarsal bones
- 5 metatarsals
- 14 phalanges

8

- Strongest of the tarsal bones
- Number of important muscles & ligaments attach to the bone
- Articulates superiorly w/ the talus & anteriorly w/ the cuboid

Calcaneus

9

_______ ______ is the large prominence & allows among others for the insertion of the tendon calcaneus (Achilles tendon)

Calcaneal Tuberosity

10

_______ _______, found on the lateral side of the bone & separates the tendons of the fibularis longus & brevis from each other

Fibular trochlear (of calcaneus)

11

Prominent "ledge" on the medial aspect of the calcaneus that has articular facets associated with it.

Sustentaculum tali

12

Deep groove which separates the articular facets of the calcaneus

Calcaneal sulcus

13

- Only tarsal bone that articulates with the tibia & fibula to form the ankle joint
- Articulates inferiorly w/ the calcaneus to form the subtalar joint
- Consist of a head, neck & body
- Articulates anteriorly w/ the navicular

Talus

14

- Found on the medial side of the foot
- Has projection on its medial side which is very palpable
- Bone articulates posteriorly w/ the talus, anteriorly w/ the 3 cuneiform bones & laterally w/ the cuboid

Navicular

15

- Named because of its shape
- Found on the lateral border of the foot
- Articulates posteriorly w/ calcaneus, anteriorly w/ the 5th metatarsal & medially w/ the lateral cuneiform & navicular

Cuboid

16

- 3
- Named medial, intermediate & lateral

Cuneiforms

17

Ossification of the tarsal bones

- begin to ossify before birth
- Normally has a single center of ossification, except the calcaneus which has a 2nd center for the calcaneal tuberosity

18

Order of ossification of tarsal bones

- Calcaneus
- Talus
- Cuboid
- 1st Cuneiform
-2nd cuneiform
- 3rd cuneiform & navicular
- Completely ossified by puberty

19

- The 5th metatarsal has a prominent tubercle on its base, which is for the attachment of the:

fibularis brevis & fibularis tertius