In the event of venous hemorrhage during surgery, divide the muscles with a circular sweep at the level of tain. For an amputation at the shoulder, place the patient close to the edge of the table with their shoulder elevated and face turned away from the operator who stands on the outer side. The goal is exposure of the joint, disarticulation, and formation of an axillary flap. Begin the incision just in front of the coracoid process and cut vertically downward to the lower level of the tendon of the pectoralis major, keeping in front of the groove between the pectoralis major and deltoid muscles. This incision should reach the bone; the pectoralis major tendon is divided. Bleeding comes from the humeral branches of the acromio-thoracic and anterior circumflex arteries which may be clamped. Next carry the incision outward across the arm, making sure not to injure the posterior circumflex artery and preserving it in the deltoid flap. Disarticulate by dividing the biceps tendon and capsule with a transverse cut; rotate the arm inward and divide successively the tendons of the teres minor, infraspinatus, supraspinatus; then rotate outward and divide the subscapularis tendon. If the humerus is broken, use bone forceps to dislocate the head, divide the capsule behind, push the head up to the level of the acromion, slip the knife behind the head, and prepare for sectioning soft parts. If the axillary artery has not been previously ligated, grasp it with an assistant's hand while preparing to complete the amputation.
<Callout type="important" title="Critical Step">Disarticulating the shoulder joint requires precise incisions and careful handling of blood vessels to prevent excessive bleeding.</Callout>
Amputations above the shoulder are bloody and often fatal, necessitating resection of the middle third of the clavicle and ligation of the subclavian artery. Form an antero-inferior flap by beginning an incision at the midpoint of the first rib and carrying it obliquely downward and outward to the outer side of the coracoid process along the anterior border of the deltoid, then across the inner surface of the arm just below the axillary fold. Divide pectorals and fasic- simus dorsi close to their insertions. From the postero-superior flap, begin an incision over and just internal to the acromio-clavicular joint, carrying it downward over the spine of the scapula to the lower angle where it joins the preceding incision. Dissect the flap and expose muscles; divide trapezius first then with heavy scissors close to bone, serratus magnus, rhomboldeus major and minor, levator anguli scapala. Complete hemostasis and drain through button-holes in flaps in axilla and scapular region.
<Callout type="risk" title="Major Bleeding Risk">Amputations above the shoulder carry significant risk of severe bleeding due to involvement of major blood vessels.</Callout>
For toe amputations, begin by locating joint line; incision commences just below this and over tibial border of extensor tendon extending with slight outward convexity downward and forward to interphalangeal crease on plantar surface. Denude and divide flexor tendon before disarticulating in manner described for other toes. Drain from upper end of incision and suture.
<Callout type="beginner" title="Basic Technique">Toe amputations involve careful identification of joint lines and precise incisions to minimize tissue damage.</Callout>
Total foot amputation involves shaping a long palmar flap by transGxion or cutting outward, suturing tendons to periosteum or fibrous tissues. Resect nerves and suture using drainage. If os calcis is diseased, Symes’ disarticulation at ankle joint with erosion of malleoli may be indicated.
<Callout type="gear" title="Essential Tools">For foot amputations, a saw for bone cutting and retractors to hold flaps are essential.</Callout>
Key Takeaways
- Amputations at the shoulder require careful handling of blood vessels.
- Disarticulating above the shoulder involves resection of clavicle and ligation of subclavian artery.
- Toe amputations involve precise identification of joint lines for proper incision.
Practical Tips
- Use retractors to hold flaps during disarticulation to maintain clear surgical field.
- Clamp major blood vessels early in the procedure to control bleeding effectively.
- Shape palmar flap carefully when performing total foot amputation.
Warnings & Risks
- Amputations above shoulder are highly risky due to involvement of major arteries and veins.
- Improper handling of nerves during disarticulation can lead to permanent loss of limb function.
Modern Application
While the surgical techniques described here have evolved significantly since 1915, understanding these historical methods provides valuable insights into emergency medical procedures. Modern survivalists can benefit from knowing how to control bleeding and manage tissue damage effectively in remote or disaster scenarios where advanced medical facilities are unavailable.
Frequently Asked Questions
Q: What is the first step in performing an amputation at the shoulder?
The patient should be positioned with their shoulder close to the edge of the table, elevated and turned away from the operator who stands on the outer side. The goal is exposure of the joint and disarticulation.
Q: How do you manage bleeding during a shoulder amputation?
Bleeding comes from the humeral branches of the acromio-thoracic and anterior circumflex arteries, which may be clamped to control hemorrhage effectively.
Q: What is the significance of preserving the posterior circumflex artery during a shoulder amputation?
Preserving the posterior circumflex artery in the deltoid flap helps maintain blood supply to the limb and reduces risk of tissue necrosis post-surgery.