This document summarizes the surgical procedure for amputation of the hindlimb in animals. It describes the indications for amputation including crush injury, gangrene, malignant disease, and septic fractures. It then details the surgical anatomy of the hindlimb muscles and major blood vessels. The procedure involves making a semicircular skin incision, isolating and ligating the femoral vessels, transecting associated muscles, cutting the femur with a bone saw, and closing the skin. Post-operative care includes antiseptic dressing, antibiotic therapy, and suture removal after 8-10 days.
3. SURGICAL ANATOMY
Femur is surrounded by a member if muscle which can be divided into two
major group i.e. muscle of medial and muscle of lateral group.
Muscles of medial group
• M. tensor fascia lata
• M. biceps femoris
• M. semitendinous
• M. adductor
Muscles of lateral group
• M. Sartorius
• M. pectineus
• M. quadriceps and biceps femoris
5. SURGICAL ANATOMY
M. tensor fascia lata
• It is triangular thin, long muscle.
• Origin: external angle of ilium and inserts lateral aspect of stifle joint.
M. Biceps femoris
• It is larger muscle
• Origin: tuber ischia inserts in patella and tarsus.
M. Semitendinous
• It is long rounded muscle.
• Origin: from tuber ischia and inserts tubercle fascia.
6. SURGICAL ANATOMY
M. semimembranous
• It is divided in two parts and originates from tubert ischii
M. adductor:
• Origin: from ventral surface of pubis and divide in two parts to insert at
inner aspect of femur.
M. Sartorius:
• Origin: from illium and end to tibia
M. Gracilis
• It is thin and narrow muscle.
• Origin: ventral surface of ischiopubis symphasis.
7. SURGICAL ANATOMY
M. pectineus
• It is large thick muscle.
• Origin: ventral surface of pubis and end on medial border and
posterior surface of femur
M. quadriceps
• It is larger muscle covered by anterior, lateral and medial aspect of
femur.
8. BLOOD AND NERVE SUPPLY
• Entire hindlimb is supplied by femoral and popliteal artery.
• Nerve supply: Nerve supply is by sciatic, saphenous and external
popliteal nerve.
11. SURGICAL TECHNIQUE
A semicircular, lateral and medial skin incision is made.
The lateral incision is gently curved from the fold of the flank and run
in the level at the mid shots of the femur.
After reflecting the skin flop on the medial aspect at the middle of
femur, gracilis, sartorius muscle causal part is transected by blunt
dissection.
The femoral vessel is isolated and divided between two ligatures.
During the course of dissection, the femoral and popliteal artery are
ligated.
12. SURGICAL TECHNIQUE
The pectineus muscle is then transected at musculo tendineous
junction.
Then quadriceps muscle and biceps femoris are transected at its
insertion point.
Transected biceps femoris is reflected proximally and the sciatic
nerve is identified where it is served.
Then semimembranous, semitendinous and adductor muscle are
transected at level of mid femur.
Femur is then cut by bone saw and leg is removed.
Hemorrhage should be checked
13. SURGICAL TECHNIQUE
Distal quadriceps muscles are sutured with adductor muscle so that
femur is completely covered.
Biceps femoris is sutured to gracilis and semi tendinous muscle.
The skin flap are brought and sutured apposition and edges are
sutured with mattress suture.
14. POST OPERATIVE CARE
Provide antiseptic dressing until healing is complete.
Give antibiotic therapy.
Remove the suture after 8-10 days of surgery.