Changes

* Origin - Supracondylar tuberosity of the femur and is firmly united to the lateral head of the gastrocnemius.

* Origin - Supracondylar tuberosity of the femur and is firmly united to the lateral head of the gastrocnemius.

* Insertion - Middle phalanx of the 2nd to 5th digits.

* Insertion - Middle phalanx of the 2nd to 5th digits.

* The muscle belly converges into a strong tendon at mid-tibial level and runs medially to the gastrocnemius to the point of the hock forming a broad cap. This cap is hed in place by medial and lateral retinaculae.  

* The muscle belly converges into a strong tendon at mid-tibial level and runs medially to the gastrocnemius to the point of the hock forming a broad cap. This cap is held in place by medial and lateral retinaculae.  

* A '''synovial bursa''' lies between this cap and the calcaneal tuberosity.

* A '''synovial bursa''' lies between this cap and the calcaneal tuberosity.

* It then runs over the plantar aspect of the hock and splits twice at the level of the dorsal tarsal bones, thus forming it's four branches for insertion.

* It then runs over the plantar aspect of the hock and splits twice at the level of the dorsal tarsal bones, thus forming it's four branches for insertion.