Core Nursing Explanation
Key Concept Analysis: This question tests the knowledge of proper crutch-walking gait for a patient with a lower extremity injury. The core principle is selecting a gait that provides stability and maintains the prescribed weight-bearing status. For a patient with a single-leg injury requiring non-weight-bearing (NWB) or partial weight-bearing, the
Three-Point Gait is the standard and safest technique.
Answer Rationale: The correct answer is option 4. This describes the classic three-point gait sequence.
Key Point! The patient has a right ankle fracture. In a three-point gait, the two crutches and the
injured leg (the right leg in this case) move forward together as one unit. This allows the patient to bear weight only on the crutches and the unaffected leg, keeping the injured leg completely off the ground. Then, the strong, unaffected leg (the left leg) swings through to advance past the crutches. This sequence provides maximum support and stability.
Distractor Analysis:
• Option 1 is incorrect because it describes moving the crutches first, then the injured leg, then the right leg. This is a confusing and unsafe sequence that does not provide coordinated support for the injured limb. It also incorrectly labels the injured leg as the "left leg," which contradicts the scenario.
• Option 2 describes a
Four-Point Gait. This gait provides excellent stability but requires weight-bearing on both legs. It is used for patients who can bear weight on both extremities but need maximum support, such as those with bilateral weakness or arthritis. It is not appropriate for a new, non-weight-bearing fracture.
• Option 3 describes a
Two-Point Gait. This is a faster, more reciprocal gait pattern where the left crutch and right leg move together, followed by the right crutch and left leg. It requires partial weight-bearing on both legs and good coordination. It is also not suitable for a patient who must keep weight off the injured ankle.
Related Concepts: The choice of crutch gait is determined by the patient's strength, balance, coordination, and the weight-bearing prescription from the physician (e.g., Non-Weight-Bearing (NWB), Toe-Touch Weight-Bearing (TTWB), Partial Weight-Bearing (PWB), Full Weight-Bearing (FWB)). Patient education must also include proper crutch fitting (2-3 finger-widths between axilla and crutch pad), using handgrips for support (not leaning on axillae to avoid nerve damage), and safety measures like wearing non-slip shoes and clearing pathways.
Concept Summary: For a single-leg injury requiring non-weight-bearing, the
Three-Point Gait is the priority. Both crutches and the injured leg advance together, followed by the unaffected leg.
Side-by-Side Comparison!:
| Gait Type | Sequence | Weight-Bearing | Indication / Use |
|---|
| Three-Point | Both crutches & injured leg → Unaffected leg | Non-weight-bearing on one leg | Single leg injury (fracture, amputation), NWB status |
| Two-Point | Left crutch & right leg → Right crutch & left leg | Partial weight-bearing on both legs | Bilateral weakness but good balance & coordination |
| Four-Point | Right crutch → Left foot → Left crutch → Right foot | Weight-bearing on both legs | Maximum stability needed (e.g., severe arthritis, poor balance) |
| Swing-To / Swing-Through | Both crutches forward → Swing legs to/through crutches | Non-weight-bearing on both legs | Paraplegia, bilateral lower extremity braces |
Anatomy, Physiology & Pharmacology Points: The primary anatomical concern with improper crutch use is injury to the
Brachial Plexus (specifically the radial nerve) from axillary pressure, leading to "crutch palsy." Physiologically, using crutches increases energy expenditure and upper body strength requirements. No direct pharmacology is involved, but pain management for the fracture is a concurrent nursing concern.
Memory Tips: Remember "
3 points for 1 bad leg": In a Three-Point gait, the 3 points of contact with the ground are the two crutch tips and the one good foot. The bad leg is in the air.
High-Frequency NCLEX Topics: Mobility aids (crutches, canes, walkers) are classic NCLEX topics. You must know gait sequences, indications, and patient safety education. The NCLEX loves to test if you can match the correct assistive device and gait to the patient's specific condition and weight-bearing order.
Watch Out for Question Variations!: The question could shift from teaching technique to
assessing for complications (e.g., "The client reports numbness in the hands. Which action should the nurse take first?" – Assess for improper crutch fit and axillary pressure). It could also ask about
stairs negotiation ("Up with the good, down with the bad" – when going upstairs, the unaffected leg goes up first; when going downstairs, the crutches and affected leg go down first).