Purvi shah anatomy of fibula ppt

Anatomy of fibula
LL bone part-5
fibula details, side determination, ossification and it's clinical anatomy. fibula is lateral and smaller bone.
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1. Anatomy Of Fibula LL Bone Part-5 BY PURVI SHAH B.P.T

2. Fibula

3. Fibula It is the lateral and smaller bone of the leg. It is very thin as compared to the tibia. It is homologous with the ulna of the upper limb.

4. Side Determination Upper end and head is expanded in all directions. Lower end or lateral malleolus is expanded AP direction and flattened from side to side. Medial side of lower end bears a triangular articular facet anteriorly and a deep or malleolar fossa posteriorly.

5. Features Fibula has an upper end, shaft and lower end. UPPER END : Expanded Superior surfaces bears a circular articulate facet; which articulate with lateral condyle of tibia. The Apex of head styloid process projects upwards from its posterolateral aspect . Constriction below head is known as neck of the fibula.

6. Features SHAFT : Three Borders 1.Anterior 2.posterior 3.interosseous Three Surfaces 1.Medial (it is very narrow measuring 1 mm or less) 2.Lateral 3.Posterior

7. Features LOWER END : The tips of lateral malleolus is 0.5cm lower than medial malleolus . Anterior surface is 1.5 cm posterior to the that of the medial malleolus. It has four surfaces: Anterior (rough) Posterior Lateral (subcutaneous) Medial ( bears triangular articular facets)

8. Functions The fibula's role is to act as and attachment for muscles, as well as providing stability of the ankle joint. The fibula is a non-weight-bearing bone .

9. Attachments Proximally, Extensor digitorum longus Superior 3/4 of medial border of fibula, Extensor hallucis longus  Middle of anterior surface Fibularis tertius  Inferior 1/3 of anterior surface Fibularis  longus Fibular head and superior 2/3 of lateral surface

10. Fibularis brevis  Inferior 2/3 of lateral surface Soleus Fibular head (posterior) and superior 1/4 of posterior surface Flexor hallucis longus:  Inferior 2/3 of posterior surface Flexor digitorum longus Via tendon Tibialis posterior   Posterior surface Attachments

11. Attachments

12. Blood Supply Peroneal artery gives off nutrient artery for fibula, which enters bone on its posterior surface.

13. Articulations Proximal tibiofibular joint Distal tibiofibular joint

14. Ossifications The fibula ossifies from the one primary and two secondary centres. The primary centre for the shaft appears during 8 th week of intrauterine life. A secondary centre for lower end appears during first year and fuse with shaft by about 16 years.

15. Clinical Anatomy The upper and lower ends of the fibula are subcutaneous and palpable Common peroneal nerve can be rolled against the neck of fibula ; this nerve commonly injured here. It leads of foot drop The fibula is an ideal spare bone for a bone graft.

16. The most common area for fibula fractures are 2-6 cm proximal to distal end of fibula. It is associated with ankle fracture.

17. Thank You