Core Nursing Explanation
Key Concept Analysis: This question assesses the fundamental safety principle for
Crutch walking. The core concept is maintaining a stable, wide base of support to prevent falls. The safest gait patterns, such as the three-point gait, are designed to keep the patient's center of gravity within this base.
Answer Rationale:
Key Point! The instruction to
"Keep the crutches close to the body and maintain three points of contact at all times" is the cornerstone of safe crutch use. Keeping crutches close prevents the center of gravity from shifting too far forward or laterally, which can cause a loss of balance. "Three points of contact" means that at least three of the four points (two crutch tips and two feet) are always in contact with the ground, ensuring maximum stability. This principle is critical for preventing falls and injury.
Distractor Analysis:
Watch out for confusion! Option ① is incorrect because placing crutches too far forward creates an unstable, overreached position, moving the center of gravity outside the base of support and significantly increasing fall risk.
Option ③ is incorrect. While crutches are for support, leaning heavily on the axillary (armpit) bars can cause
Radial nerve palsy or "crutch palsy." Weight should be borne on the hands via the handgrips, not the axillae.
Option ④ is incorrect. Moving both crutches simultaneously with the unaffected leg describes a swing-through gait, which is an advanced, less stable pattern typically used by individuals with paraplegia or excellent upper body strength. It is not the standard, safe method taught to most patients for initial ambulation and increases the risk of losing balance.
Related Concepts: Safe crutch walking involves more than just moving; it includes proper crutch fitting (2-3 finger-widths between axilla and pad), correct handgrip positioning (elbows slightly flexed at 20-30 degrees), and choosing the appropriate gait (e.g., three-point, two-point, four-point) based on the patient's weight-bearing status and coordination.
Concept Summary: Crutch Safety = Maintain three points of contact + Keep crutches close to body + Bear weight on hands, not axillae + Use prescribed gait pattern.
Side-by-Side Comparison!:
| Gait Pattern | Sequence (Crutch = C, Affected Leg = A, Unaffected Leg = U) | Indication / Stability |
|---|
| Three-Point Gait | Move both crutches and the affected leg forward together, then step through with the unaffected leg. | Non-weight-bearing or partial weight-bearing on one leg. Very stable. |
| Four-Point Gait | Right crutch → Left foot → Left crutch → Right foot. | Partial weight-bearing on both legs. Maximum stability but slow. |
| Two-Point Gait | Right crutch and left foot together, then left crutch and right foot together. | Partial weight-bearing on both legs. Faster than four-point, requires more coordination. |
| Swing-Through Gait (Advanced) | Move both crutches forward, then swing both legs past the crutches. | Used by individuals with paralysis (e.g., paraplegia). Requires significant upper body strength and balance. |
Anatomy, Physiology & Pharmacology Points: The primary anatomical concern is protecting the
Brachial plexus and
Radial nerve, which run through the axilla. Improper crutch use (leaning on axillary bars) compresses these nerves, leading to temporary or permanent damage, manifesting as wrist drop (inability to extend the wrist) and numbness.
Memory Tips: Remember the rule of
"3 C's for Crutch Safety":
Close to body,
Contact (three points),
Correct gait. To avoid nerve injury: "Hands hold, axillae are off-limits!"
High-Frequency NCLEX Topics: Safe patient mobility and use of assistive devices (canes, walkers, crutches) is a
Core topic. NCLEX often tests on selecting the correct assistive device, teaching safe techniques, and identifying unsafe practices in a scenario.
Watch Out for Question Variations!: The same concept can be tested by: 1) Asking for the
priority instruction for a patient using crutches for the first time (safety first!). 2) Showing a picture of improper crutch use and asking what the nurse should correct. 3) Asking which patient statement indicates understanding of safe crutch walking.