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Lecture

PEDS240 Lecture Notes - Hyaline Cartilage, Chondromalacia Patellae, Quadriceps Femoris Muscle

4 Pages
106 Views
Winter 2013

Department
Physical Education and Sport
Course Code
PEDS240
Professor
Brad Kern

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March 11 – Knee
Acute Patella Sublaxation or Dislocation
Cause of Injury
Deceleration with simultaneous coming in opposite direction (valgus force at
knee)
Quad pulls the patella out of alignment
Some athletes may be predisposed to injury
Repetitive sublaxation will impose stress to medial restraints
More commonly seen in female athletes
Signs of Injury
With sublaxation, pain, swelling, restricted ROM, palpable tenderness over
abductor tubercle
Dislocations result in total loss of function
First time dislocation = assume fracture
Care
Immobilize and refer to physician for reduction
Ice around the joint
Following reduction, immobilization for at least 4 weeks with use of crutches
After immobilization period, horseshoe pad with elastic wrap should be used
to support patella
Muscle rehab focusing on muscle around the knee, thigh and hip are key
(STLR’s are optimal for the knee)
Chondromalacia Patella
Cause

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Description
March 11 – Knee Acute Patella Sublaxation or Dislocation Cause of Injury • Deceleration with simultaneous coming in opposite direction (valgus force at knee) • Quad pulls the patella out of alignment • Some athletes may be predisposed to injury • Repetitive sublaxation will impose stress to medial restraints • More commonly seen in female athletes Signs of Injury • With sublaxation, pain, swelling, restricted ROM, palpable tenderness over abductor tubercle • Dislocations result in total loss of function • First time dislocation = assume fracture Care • Immobilize and refer to physician for reduction • Ice around the joint • Following reduction, immobilization for at least 4 weeks with use of crutches • After immobilization period, horseshoe pad with elastic wrap should be used to support patella • Muscle rehab focusing on muscle around the knee, thigh and hip are key (STLR’s are optimal for the knee) Chondromalacia Patella Cause • Softening and deterioration of the articular cartilage. Mainly happens on posterior patella surface Abnormal patellar tracking • Bony alignment • Quadriceps weakness • Pelvis width • If you always seem to have pain in the patella, you probably have poor patellar tracking Signs of Injury • Pain with walking, running, stairs and squatting • Possible recurrent swelling, grating sensation with flexion and extension Care • Conservative
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