Strain Flashcards
What is an overstretch injury to a musculotendinous unit (muscle fiber injury)?
Strain
What is a grade 1 strain?
Minor stretch, few torn fibers
What is a grade 2 strain?
Several to majority of fibers torn
What is a grade 3 strain?
Complete rupture or avulsion fracture
What fracture is piece of bone attached to tendon/ligaments get pulled away from the main part of the bone?
Avulsion fracture
What are the etiology?
- Sudden overstretch of muscle
- Extreme contraction
- Trauma
- Chronic overuse
- Inadequate warmup for activites, limited flexibility, muscle fatigue
Where are the most common strains?
- Hamstrings
- Quadriceps
- Gastrocnemius
- Adductors
- Rotator Cuff
- Pec Minor
- Biceps Brachii
- Erectors
What are the signs & symptoms of a grade 1 strain?
- Can continue activity with mild discomfort
- Discomfort or mild pain
- Minimal or no loss of strength or function
- Local tenderness
What are the signs & symptoms of grade 2 strain?
- Difficulty continuing activity due to pain or weakness
- Possible snapping sound or sensation
- Palpable gap at the injury site
- Some loss of strength & function
- Protective spasm
- Bruising or hematoma may be present in more severe cases
- Protective spasm may limite ROM
What are the signs & symptoms of a grade 3 strain?
- Unable to continue activity due to significatn pain and weakness
- Snapping sensation or sound
- Bruising
- Severe pain aggravated by movement
- Possible swelling
- Palpable gap
- Often visible deformity, as the muscles shortens & bunches up
- Hematoma at the lesion site
- Protective spasm that decreases ROM
- Bandages, slings or crutches may be used
What are the signs & symptoms during acute?
- Inflammation
- Loss of function d/t swelling, protective spasm & pain
- Bruising red, black & blue
- Mm, blood vessel, nerve damage possible in grade 2 & 3
What are the signs & symptoms in early subacute?
- Inflammation decreased
- Swelling decreases, protective spasm are still present
- Bruising is black & blue
- Crutches & sling
- ROM is limited
- Adhesions are starting to form
- TPs, local & compensatory
- Reduced proprioception
What are the signs & symptoms in late subacute?
- Inflammation further decreased
- Edema decreased & gel like like
- Protective spasm has been replaced by ADH & FR
- Bruising is yellow, green & brown
- Crutches / sling
- ROM increased
- Adhesions are maturing
- TPs, local & compensatory
- Reduced proprioception
What are the signs & symptoms in chronic?
- Inflammation is gone
- Tissues may be cool d/t adhesions
- Fascial restrictions
- Edema is barely noticeable / gone
- Bruising gone
- Point tenderness is local to injury site
- ROM is limited in direction of injury - strength reduced
- Adhesions are matured & local to site
- TPs are local
- Reduced proprioception at joint
What are contraindications & precautions?
- No testing other than pain free AROM in acute grade 2 or 3
- Do not completely remove protective spasm (acute)
- No distal circulatory techniques (acute / early subacute)
- If a grade 3 strain is casted, no heat applications immediately proximal to the cast
- No frictions with inflammatories
- Avoid joint movement that produced pain or will overstretch the injured site