Hawthorne Firefighters: Prevent Back & Knee Injuries

Hawthorne firefighters sustain tens of thousands of lower back and knee injuries annually, according to the National Fire Protection Association. Sprains and strains account for 64% of these injuries, often sidelining personnel for weeks or months.

Back injuries comprise 19% of all firefighter injuries and 32% of musculoskeletal disorders. Knee injuries represent 10% of all firefighter injuries and are the most common lower extremity injury site, research shows.

A striking 65% of musculoskeletal disorders occur at the fire station or during physical training, not on the fireground. Only 15% happen during actual fire incidents. Routine activities like lifting, exercise, and daily tasks cause the majority of career-threatening injuries.

Firefighters face multiple injury risks. Full turnout gear with SCBA weighs 60–75 pounds, shifting the center of gravity, compressing the spine, and stressing the knees. Firefighters frequently work in positions that strain the lower back and knees, such as crouching, crawling, and twisting in confined spaces. They transition from rest to maximum exertion within seconds of an alarm, subjecting cold muscles and joints to sudden peak forces. Between calls, prolonged sitting tightens hip flexors, weakens glutes, and places sustained compressive load on lumbar discs.

Lower Back Injury Prevention

Lifting causes most back injuries in firefighters. The lumbar spine is most vulnerable when loaded while flexed and rotated simultaneously, as when lifting a charged hoseline or moving a patient while twisting. Intervertebral discs tolerate enormous compressive loads when the spine is neutral, but flexion weakens the posterior disc, making it prone to herniation under load.

A strong, stable core provides the most effective protection. Firefighters should focus on anti-movement exercises where the core resists motion:

Plank variations: Front plank, side plank, plank with arm or leg lift. Hold 30–60 seconds, building to three sets of 60 seconds in each position.
Pallof press: Using a cable machine or resistance band, press outward at chest height and hold. Perform three sets of 10 presses per side.
Dead bug: Lying on your back, extend opposite arm and leg while keeping the lower back flat. Complete three sets of 10 per side.
Bird dog: On hands and knees, extend opposite arm and leg. Hold 5 seconds, return. Perform three sets of 10 per side.
Loaded carries: Farmer walks, suitcase carries, and overhead carries demand sustained core bracing under load.

Proper lifting mechanics must become automatic. Hip hinge rather than round the back: push hips backward, keep the chest up, and maintain a neutral spine. Power should come from the glutes.