What causes muscle soreness?
Structural damage to muscle tissue from moderate to heavy activity, leading to swelling and pain.
What is acute muscle soreness?
Pain during or immediately after exercise.
What is delayed onset muscle soreness (DOMS)?
Pain that begins ~12 hrs after exercise, worsens 24–48 hrs, and lasts several days.
Signs/symptoms of muscle soreness?
Diffuse pain/tenderness, ↓ ROM & strength, no obvious swelling, no deformity, possible muscle tightness/guarding.
What treatments are used for muscle soreness/DOMS?
Light stretching, light activity, massage, foam rolling, NSAIDs, electrical stimulation.
Which type of contraction is most associated with DOMS?
Eccentric contractions.
What is a concentric contraction?
Muscle shortens during contraction.
What is an eccentric contraction?
Muscle lengthens during contraction (e.g., “negatives”).
What is a contusion?
An acute injury caused by direct compression/impact.
Signs/symptoms of contusions?
Pain, swelling, tenderness, discoloration, ↓ ROM, possible hematoma.
What type of tissue load causes contusions?
Compressive force.
Treatment for contusions?
RICE, padding, light stretching, monitor for complications.
Define a fracture.
Acute injury causing discontinuity of bone.
Causes of fractures?
External or internal force (trauma, stress, contraction).
Signs/symptoms of fractures?
Pain/TTP, rapid swelling, deformity, crepitus, inability to use limb, possible pop.
What are common special tests for fractures?
Squeeze, percussion/tap, fulcrum, axial compression, tuning fork.
What imaging confirms fractures?
X-ray, CT, MRI.
Define a closed fracture.
Bone breaks without piercing the skin.
Define an open fracture.
Bone pierces skin, creating open wound.
Define an avulsion fracture.
A tendon or ligament pulls a piece of bone away.
Define a greenstick fracture.
Incomplete break in bones not fully ossified (common in adolescents).
What are growth plates called?
Epiphyseal plates.
What classification system is used for growth plate fractures?
Salter–Harris classification.
General fracture management principles?
Control bleeding, cover wounds, immobilize above & below, splint in position found, monitor ABCs, check distal pulses.