1

ANATOMY OF KNEE JOINT

PROBLEM BASED LEARNING (PBL)

PREPARED BY: MUHAMMAD ARIFF B. MAHDZUB

BACHELOR MEDICINE AND SURGERY (MBBS)

UNIVERSITY COLLEGE SHAHPUTRA, KUANTAN

FEMUR

TIBIA

FIBULA

PATELLA

Lateral- vastus lateralis

Medial vastus medialis

Apexligamentum patellae

Basequadriceps femoris

- Known as kneecap, is a thick, circular-triangular bone which

articulates with the femur and covers and protects the anterior

articular surface of the knee joint. It is the largest sesamoid

bone in the human body.

FEMORAL NERVEOBTURATOR NERVESCIATIC NERVECOMMON PERONEAL NERVETIBIAL NERVE

FEMORAL NERVE

FEMORAL NERVE-Nerve of the anterior or extensor compartment of the thigh-Posterior divisions of anterior rami of L2,3,4-At midpoint of inguinal ligament, deep to it and lateral to femoral vessels-It breaks up into terminal branches at one inch below the ligament

OBTURATOR NERVE

OBTURATOR NERVEAnterior divisions of anterior rami of L2,3,4

BRANCHCES1. From Trunk

- To Obturator externus2. From anterior division

- Articular branch to hip joint-To adductor longus, gracilis, pectineus-Cutaneous branch communicate with medial - cutaneous nerve of thigh & saphenous nerve -To form subsatorial plexus

3.From posterior division-To adductor brevis, obturator externus

& adductor magnus-To knee joint

SCIATIC NERVE

-Ventral rami of L4,5,S1,2,3-Branches in Thigh-To hamstrings & adductor magnus (Tibial)-Biceps (Common Peroneal Nerve)

-Danger side at Medial side

COMMON PERONEAL NERVE

COMMON PERONEAL NERVE

-lateral and smaller of the two terminal branches-arises from the posterior divisions of the sacral plexus (L4 to S2)-begins at the superior angle of the popliteal fossa-winding around the lateral surface of the neck of the fibular and ends by dividing into superficial & deep peroneal nerves in the substance of peroneus longus muscle

TIBIAL NERVE-Medial terminal branch-arises from the anterior diovisions of the sacral plexus (L4 to S2)-Repressents the main continuation of the sciatic nerve