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Tibia

BLOOD SUPPLY

The arterial blood supply to tibia includes:

  1. Nutrient artery is the major artery supplying blood to tibia.

  2. Another artery is the periosteal vessels, which is derived from the anterior tibial artery.

JOINTS

Tibia forms four joints; knee, ankle, superior tibiofibular joint and inferior tibiofibular joint. The tibiofibular joints are formed between tibia and fibula allowing very little movement.

  1. In the knee region tibia makes articulation with femur referred as tibiofemoral components of the knee joint. This is the part of the knee joint which bears weight.

  2. Superior or proximal tibiofibular joint is a small plane joint formed between undersurface of the head of fibula and lateral tibial condoyle. The joint capsule is further strengthened by anterior and posterior ligament of the head of fibula.

  3. Inferior or distal tibiofibular joint is formed between the convex, rough, distal end of tibia and rough, concave, lateral side of the lower end of fibula.

  4. The ankle joint is also known as talocrural joint. This joint connects distal ends of tibia and fibula to the proximal end of talus.

MUSCLE ATTACHMENTS

Tibia has in total 11 muscle attachment out of which seven insert and four originate from Tibia. The muscles are as follows:

  1. Tensor fasciae latae muscle

  2. Quadriceps femoris muscle

  3. Sartorius muscle

  4. Gracilis muscle

  5. Semitendinosus muscle

  6. Semimembranosus muscle

  7. Popliteus muscle

  8. Tibialis anterior muscle

  9. Extensor digitorum longus muscle

  10. Soleus muscle

  11. Flexor digitorum longus muscle

STRENGTH

The tibia has been designed to take an axial force during walking that is upto 4.7 times of bodyweight. In bending backwards this force is up to 71.6 times bodyweight.

 


BLOOD SUPPLY

The arterial blood supply to tibia includes:

  1. Nutrient artery is the major artery supplying blood to tibia.

  2. Another artery is the periosteal vessels, which is derived from the anterior tibial artery.

JOINTS

Tibia forms four joints; knee, ankle, superior tibiofibular joint and inferior tibiofibular joint. The tibiofibular joints are formed between tibia and fibula allowing very little movement.

  1. In the knee region tibia makes articulation with femur referred as tibiofemoral components of the knee joint. This is the part of the knee joint which bears weight.

  2. Superior or proximal tibiofibular joint is a small plane joint formed between undersurface of the head of fibula and lateral tibial condoyle. The joint capsule is further strengthened by anterior and posterior ligament of the head of fibula.

  3. Inferior or distal tibiofibular joint is formed between the convex, rough, distal end of tibia and rough, concave, lateral side of the lower end of fibula.

  4. The ankle joint is also known as talocrural joint. This joint connects distal ends of tibia and fibula to the proximal end of talus.

MUSCLE ATTACHMENTS

Tibia has in total 11 muscle attachment out of which seven insert and four originate from Tibia. The muscles are as follows:

  1. Tensor fasciae latae muscle

  2. Quadriceps femoris muscle

  3. Sartorius muscle

  4. Gracilis muscle

  5. Semitendinosus muscle

  6. Semimembranosus muscle

  7. Popliteus muscle

  8. Tibialis anterior muscle

  9. Extensor digitorum longus muscle

  10. Soleus muscle

  11. Flexor digitorum longus muscle

STRENGTH

The tibia has been designed to take an axial force during walking that is upto 4.7 times of bodyweight. In bending backwards this force is up to 71.6 times bodyweight.

 

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