This document summarizes the anatomy of the fibula bone. It identifies the fibula and describes its parts including the head, neck, shaft, and lower end. It discusses the borders and surfaces of the fibula and how to determine its side. The document outlines the attachments of ligaments and muscles to the fibula including the peroneal muscles. It also provides clinical notes on fractures to the fibula neck damaging the common peroneal nerve and resulting in foot drop.

1. Presented by – Presented to -
Kamlesh Nishad Vd. Sachin
Ravan
Kunal Yadav Vd. Gaurav
Sharma
Gulshan Rawat
Soaib
Parth Priyadarshi

2.  Identify fibula.
 Demonstrate the different parts, borders and surfaces of fibula.
 Determine the side of the fibula
 Hold the fibula in its anatomical position.
 Demonstrate attachment of joint capsule ,ligaments and muscles on
the fibula.

3.  Lies laterally
 Is smaller bone of leg.
 Homologous to ulna of upper limb
 Very thin bone compared to ulna.
 Is not a weight bearing bone.

4. Side Determination
Upper End – Expanded in All Directions
Lower End – Expanded In Anteroposteriorly
Flattened from Side to Side
On Medial Side of Lower End--Triangular Articular
Facet(Anteriorly)
Malleolar Fossa(Posteriorly)

5. Upper end/Head-
 Neck – Constriction below the head.
 Shaft-
 Lower end-
Expanded in all direction, circular
articular facet(for lateral condyle of tibia),
styloid process.
3 Borders & 3 Surfaces
4 Surfaces-
Anterior Posterior Medial &
Lateral

7.  1.Anterior border -
 Above –just below ant. Aspect of head.
 Below-
divide to enclose triangular
area(cont. lateral surface of lateral
malleolus
 2.Posterior border -
 Above-
in line with styloid process.
 Below-
continue with medial margin of
groove on back of lateral malleolus.

8.  2.Medial/Interosseous border -
 Lies just medial to ant.Border.
 Terminates-
below at roughened area
above talar facet.
 Upper 2/3rd–lies very
close(indistinguishable ) to ant.Border.

9.  Medial surface
 Lateral surface
 Posterior surface
LIESBETWEENAND
FEATURES
ANTERIOR AND MEDIAL BORDER
ITS UPPER 2/3RD VERY NARROW (1MM OR LESS)
ANTERIOR AND POSTERIOR BORDER
TWISTED BACKWARD IN LOWER PART
INTEROSSEOUS AND POST.BORDER
UPPER 2/3RD DIVIDE BY VERTICAL RIDGE
CALLED MEDIAL CREST.

10. 1.Anterior surface - rough and rounded
2.Posterior surface- have a groove.
3.Lateral surface - subcutaneous.
4.Medial surface - have Triangular facet for talus(Anteriorly)
& Malleolar fossa (Posteriorly)

11. Special features of lateral malleolus-
 Tip of lateral malleolus 0.5 cm lower then that of medial malleolus.
 Ant.Surface of lateral malleolus 1.5 cm posterior to that of medial malleolus

12. Surfaces and borders Attachments and relations
Medial surface Extensor digitorum longus-From
Upper 1/4(Whole)
Middle 2/4(Anterior)
Extensor hallucis longus-from
Middle 2/4(posterior)
Peroneus tertius-From
Lower 1/4 (Whole)

13. Surfaces and borders Attachments and relations
Lateral surface Peroneus longus-From
Upper 1/3(whole)
Middle 1/3(Posterior)
Peroneus Brevis-from
Lower 1/3(whole)
Middle 1/3(anterior)

14. Surfaces and borders Attachments and relations
Posterolateral surface B/W medial crest and
post. Border
Soleus (upper 1/4th),
flexor hallucis
longus(lower 3/4th)
B/W medial crest and
interosseous border
Tibialis posterior
Posteromedial surface

16. Head  Biceps femoris(Insertion C-shaped)
 Fibular collateral ligament(within C-shaped area)
 Capsular ligament of the superior tibiofibular
joint(is attached around articular facet)
Anterior border  Ant. intermuscular septum
Sup. Extensor Retinaculum
Sup. Peroneal Retinaculum
Posterior border  Post. intermuscular septum
Interosseous border  Interosseous membrane
 Gap(at upper end )-Ant. tibial vessels
Gap(at lower end) -perforating branch of
peroneal artery.

19. Triangular area above medial surface
of Lateral malleolus
 Interosseous tibiofibular(L)
 Ant.Tibiofibular(L)
 Post.Tibiofibular(L)
Lateral malleolus  Ant. Talofibular(L)
 post. Tibiofibular(L)
 Inf.Transverse(L)
 Calcaneofibular(L)
 tibiofibular Capsule
of ankle joint
 Tendon of Peroneus
longus (in groove of
post. Surface
Superficial)
 Tendon Peroneus brevis (in groove of
post. Surface Deep)

20. Blood Supply
 Peroneal Artery Gives Off The Nutrient
Artery For the Fibula
 Enters on Posterior Surface
 Directed Downwards

21. Clinicals
Fracture to Neck of Fibula
Damages Common Peroneal
Nerve
Deep Peroneal
Nerve
Superficial Peroneal
Nerve
 Paralysis of Muscles of the
anterior compartment of the leg
 Dorsiflexion power Loss of foot
 This condition is Called
FootDrop
 Also Sensory loss to First
Interdigital cleft
 Paralysis of Peroneus brevis &
Peroneus Longus
 Loss of Eversion of Foot at
subtalar joint
 Also Sensory Loss to Anterior &
Lateral Aspects of Leg,Dorsum
of foot&the toes

23. Thank you