Learning Objectives:
- Define basic functions of the hand we need to restore
- Identify factors affecting the choice of implant and the timing of bone grafting
- Describe timing and various options for soft tissue coverage
- Define the expected outcome
Duration: 26:03
Severely mangled limbs are fraught with multiple tissue
injuries including bone tendon, intrinsic muscles, neurovascular bundles, and
skin. Secondary procedures are extremely common to restore basic function. In
this course, we aimed to focus on the basic principles of management and
strategies to optimize the hand function.
Topics covered:
A. Description, classification, and evaluation of the mutilated hand. The
variety and severity of mangled hand injuries has led to the development of
several grading scales, classifications, and algorithms to help the surgeon
organize the treatment plan. We discuss some of these classification schemes in
determining and predicting the functional outcome after reconstruction.
B. What functions do we need to restore? Various functions of the hand
including grip (hook, power, span, chuck), pinch (key, precision, chuck) can be
simplified to think of the hand as containing 4 functional units: (1) an
opposing thumb, (2) Fixed units of index and long, (3) More mobile ring and
small fingers, (4) the wrist.
C. Fracture fixation in the mutilated hand. Skeletal stabilization is the
foundation for wound management and enhances the healing of tissue repairs and
reconstruction, including replantation. In this lecture, we specifically
discuss various fracture types and implant designs in addition to timing and
the choice of bone grafts.
D. Soft tissue coverage options: Local, regional, and distant flaps. The
concept of early rehabilitation depends on early coverage. We discuss various
coverage options and how to balance them with the experience of the treating
hand surgeon.
E. Replantation/revascularization in the mutilated hand. Not all amputees
benefit from or are candidates for replantation. The decision to attempt
replantation of a severed part is influenced by many factors, including the
part, level of injury, expected return of function, mechanism of injury and
psychosocial status of the patient. We discuss basic replantation techniques
and those factors affecting the outcome.
F. Case examples on specific injury types and reconstruction. Case examples of
radial-sided, ulnar-sided, dorsal-sided, volar sided and mid-palmar mutilating
injuries will be discussed with the audience.