9.2 Skin & Skeletal Traction: Buck's, Russell's, Balanced Suspension & Skeletal Traction Protocols

Skin & Skeletal Traction: Buck's, Russell's, Balanced Suspension & Skeletal Traction Protocols

Core Clinical Principle: Traction applies mechanical pulling forces along the longitudinal axis of an injured extremity to reduce fracture displacement, fatigue painful spastic muscle bellies, restore anatomical limb length, and immobilize skeletal fragments prior to definitive surgical fixation. Maintenance of uninterrupted line of pull, continuous countertraction, and meticulous pressure-point offloading are fundamental nursing imperatives.

Traction systems are divided into two fundamental modalities based on how mechanical force is coupled to the patient: Skin Traction (force applied indirectly across the cutaneous envelope) and Skeletal Traction (force applied directly to the osseous framework via surgically inserted transfixion pins or wires).

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1. Biomechanical Vectors & Traction Principles

                      MECHANICAL VECTORS IN TRACTION SYSTEMS
  ┌─────────────────────┬────────────────────────────────────────────────────────┐
  │ Physical Principle  │ Clinical Application & Nursing Consideration           │
  ├─────────────────────┼────────────────────────────────────────────────────────┤
  │ 1. Line of Pull     │ Direction of tensile force; must strictly match the   │
  │                     │ longitudinal anatomical axis of the fractured bone.    │
  │ 2. Countertraction  │ Opposing force preventing the patient from being pulled│
  │                     │ toward the pulley; supplied by body mass and bed tilt. │
  │ 3. Resultant Vector │ Single combined force generated when two directional   │
  │                     │ pulls (e.g., vertical sling + horizontal pull) merge.  │
  │ 4. Friction Loss    │ Drag caused by heels on sheets or weights on frame     │
  │                     │ that negates effective mechanical traction load.       │
  └─────────────────────┴────────────────────────────────────────────────────────┘

Vector Dynamics & Countertraction

• Newton's Third Law: For every applied traction force, an equal and opposite force (countertraction) must be present. If countertraction is inadequate, the traction weight simply drags the patient down the bed until the weight touches the floor, instantly neutralizing the therapeutic pull.
• Countertraction Interventions:
  • In lower-extremity traction, tilt the bed into Trendelenburg position (elevating the foot of the bed) so the patient's torso mass acts as an opposing gravitational anchor.
  • Ensure the patient's feet do not press firmly against the footboard, which directly dampens the traction force vector.

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2. Skin Traction Modalities & Nursing Protocols

Skin traction applies non-invasive tensile forces directly to the skin and subcutaneous tissues via adhesive straps, foam boots, or fabric slings. Because shear stresses can strip the epidermis, skin traction is strictly temporary (short-term preoperative stabilization).

                     SKIN TRACTION MODALITIES & PARAMETERS
  ┌─────────────────────┬─────────────────┬──────────────┬──────────────────────────────┐
  │ Traction System     │ Primary Use     │ Weight Limit │ High-Risk Pressure / Nerves  │
  ├─────────────────────┼─────────────────┼──────────────┼──────────────────────────────┤
  │ Buck's Extension    │ Hip / proximal  │ 5 – 8 lbs    │ Common peroneal nerve at     │
  │ Traction            │ femur fractures │ (2.3–3.6 kg) │ fibular head; Achilles heel  │
  ├─────────────────────┼─────────────────┼──────────────┼──────────────────────────────┤
  │ Russell's Traction  │ Pediatric femur/│ 5 – 8 lbs    │ Popliteal artery/tibial nerve│
  │ (Vertical + Horiz)  │ adult hip/femur │ (2:1 vector) │ in knee sling; heel shear    │
  ├─────────────────────┼─────────────────┼──────────────┼──────────────────────────────┤
  │ Bryant's Traction   │ Pediatric femur │ Child weight │ Circulatory stasis; ischemia │
  │ (Vertical bilateral)│ (<2 yr, <30 lbs)│ (Buttocks up)│ in elevated lower extremities│
  └─────────────────────┴─────────────────┴──────────────┴──────────────────────────────┘

Buck's Extension Traction Protocol

Buck's traction is a straight, unilateral or bilateral longitudinal pull used preoperatively to immobilize femoral neck, intertrochanteric, and subtrochanteric hip fractures, reducing muscle spasm and controlling pain.

• Weight Threshold: The applied weight must never exceed 5 to 8 lbs (2.3 to 3.6 kg) per extremity. Higher weights generate severe cutaneous shear, blistering, skin sloughing, and necrosis.
• Critical Pressure Points & Nerve Hazards:
  • Common Peroneal (Fibular) Nerve Compression: The common peroneal nerve wraps superficially around the lateral neck of the fibula just below the knee. Lateral rotation of the limb in a Buck's boot or overly tight circumferential elastic straps compresses this nerve.
    • Clinical Manifestation: Paresthesias, burning, or numbness over the dorsum of the foot and first web space, accompanied by loss of ankle/great toe dorsiflexion (foot drop).
  • Achilles Tendon & Heel Breakdown: The posterior heel and Achilles tendon are vulnerable to rapid pressure injury. The nurse must ensure the heel is completely elevated ("floating") off the mattress inside the boot and check the skin beneath the boot every 8 hours.

Russell's Traction Protocol

Russell's traction utilizes a padded sling beneath the distal thigh/knee combined with longitudinal leg traction.

• Vector Mechanics: A single continuous rope runs from the sling over overhead pulleys and around a footplate pulley, creating a 2:1 mechanical advantage. The vertical lift from the knee sling combined with the horizontal leg pull generates a $45^\circ$ resultant vector along the anatomical axis of the femur.
• Nursing Directives: Ensure the sling remains smooth and wide behind the popliteal fossa without bunching, which could occlude the popliteal artery or compress the tibial nerve.

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3. Skeletal Traction Modalities & Pin Placement

Skeletal traction applies direct, high-magnitude longitudinal tensile forces to the skeleton via transfixion pins or tensioned wires drilled directly through cortical bone. It is indicated for definitive or interim management of unstable femoral shaft fractures, complex pelvic ring disruptions, and unstable cervical or acetabular fractures.

                     SKELETAL TRACTION ANATOMICAL CORRIDORS
  ┌─────────────────────┬─────────────────────────────────┬──────────────────────────────┐
  │ Skeletal Site       │ Insertion Corridor & Landmark   │ Vulnerable Structures Avoided│
  ├─────────────────────┼─────────────────────────────────┼──────────────────────────────┤
  │ 1. Distal Femur     │ Medial to Lateral: 2 cm proximal│ Femoral artery & vein in     │
  │                     │ to superior pole of patella     │ Hunter's adductor canal      │
  ├─────────────────────┼─────────────────────────────────┼──────────────────────────────┤
  │ 2. Proximal Tibia   │ Lateral to Medial: 2 cm distal  │ Common peroneal nerve at     │
  │                     │ & 2 cm posterior to tibial tub. │ fibular head; anterior tib a.│
  ├─────────────────────┼─────────────────────────────────┼──────────────────────────────┤
  │ 3. Calcaneus        │ Lateral to Medial: 3 cm distal  │ Posterior tibial neurovasc.  │
  │                     │ & 3 cm posterior to lat mall.   │ bundle (medial plantar nerves)│
  └─────────────────────┴─────────────────────────────────┴──────────────────────────────┘

Hardware & Weight Dynamics

• Steinmann Pins vs. Kirschner (K-) Wires: Smooth or threaded rigid Steinmann pins ($3.5\text{--}5.0\text{ mm}$) withstand high bending forces. Thin Kirschner wires ($1.5\text{--}2.0\text{ mm}$) require tensioning within a rigid Bohler or Kirschner traction bow to prevent bowing under load.
• Traction Weight Magnitude: Skeletal traction supports 15 to 25+ lbs (6.8 to 11.3+ kg), typically calculated as 10% to 15% of the patient's total body weight, sufficient to overcome massive quadriceps and hamstring muscle spasm.

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4. Balanced Suspension Skeletal Traction (BSST)

Balanced suspension combines skeletal traction with a multi-pulley suspension frame that cradles the fractured limb, allowing the patient to adjust position, use a bedpan, and raise their torso without altering the fracture reduction vector.

                   BALANCED SUSPENSION FRAME COMPONENTS
  ┌───────────────────────┬──────────────────────────────────────────────────────┐
  │ Component             │ Function & Anatomic Alignment                        │
  ├───────────────────────┼──────────────────────────────────────────────────────┤
  │ 1. Thomas Splint      │ Rigid ring-and-sidearm frame cradling the posterior  │
  │                       │ thigh; padded ring rests near ischial tuberosity.    │
  │ 2. Pearson Attachment │ Hinged lower frame attached to Thomas splint at the  │
  │                       │ anatomic knee axis, supporting the lower leg.        │
  │ 3. Suspension Circuit │ Counterpoise weights supporting the weight of splint │
  │                       │ and limb, allowing the assembly to float.            │
  │ 4. Traction Circuit   │ Independent rope and weights pulling on the skeletal │
  │                       │ transfixion pin along the femoral anatomical axis.   │
  └───────────────────────┴──────────────────────────────────────────────────────┘

Nursing Operational Protocols for Balanced Suspension

• Trapeze Bar Utilization: Encourage the patient to grasp the overhead trapeze bar and push up with the uninjured leg to elevate the buttocks during skin inspection, linen changes, and bedpan placement. The balanced suspension frame floats synchronously with the patient's movements, preserving the alignment of the fracture.
• Ischial Ring Surveillance: Inspect the groin and ischial area beneath the Thomas ring every 8 hours for moisture accumulation, pressure marks, and friction. Ensure the ring does not impinge on the perineum or occlude femoral venous return.

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5. Standardized Orthopaedic Nursing Traction Maintenance Checklist

  ┌────────────────────────────────────────────────────────────────────────────┐
  │                    TRACTION SAFETY & MAINTENANCE CHECKLIST                 │
  ├────────────────────────────────────────────────────────────────────────────┤
  │ [ ] WEIGHTS HANG FREELY: Weights must never rest on the floor, bed frame, │
  │     or bedside furniture. Keep weights suspended unobstructed.             │
  │ [ ] NEVER LIFT WEIGHTS: Do not remove, release, or manually support        │
  │     weights during patient repositioning, hygiene, or bed changes.         │
  │ [ ] ROPES & PULLEYS: Ropes must run freely in the center of pulley grooves;│
  │     check for fraying; ensure knots are secure and taped.                  │
  │ [ ] LINE OF PULL: Patient must remain aligned along the longitudinal axis  │
  │     of the traction cord; do not allow the patient to rotate or slide.     │
  │ [ ] COUNTERTRACTION: Adjust bed tilt (Trendelenburg) to balance traction   │
  │     load; prevent feet from contacting the footboard.                      │
  │ [ ] NEUROVASCULAR ASSESSMENTS: Perform serial 6 Ps checks distal to the    │
  │     injury (pulses, capillary refill, sensation, motor function).          │
  │ [ ] PIN SITE CARE: Clean pin sites per protocol; cap sharp pin ends with   │
  │     protective rubber guards to prevent skin puncture on opposite limb.    │
  └────────────────────────────────────────────────────────────────────────────┘

Clinical Alert: Never Manually Lift Traction Weights

Lifting or releasing skeletal traction weights causes immediate, violent reflex muscle spasms in the large thigh or calf muscles, resulting in excruciating pain, bone fragment displacement, loss of reduction, and sharp osseous ends puncturing adjacent neurovascular bundles. Traction weights must remain continuously applied unless an explicit physician order specifies temporary removal.