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Emergency Orthopedics, 6e
| Part IV. Lower Extremities > |
Knee Soft-Tissue Injury and Dislocation
Sections: Patellar Tendinopathy (Jumper's Knee), Examination, Imaging, Treatment, Extensor Mechanism Disruption, Mechanism of Injury, Examination, Imaging, Treatment, Muscle Strain and Tendonitis, Iliotibial Band Syndrome, Fabella Syndrome, Bursitis, Prepatellar Bursitis, Infrapatellar Bursitis, Anserine Bursitis, Baker's Cyst, Lateral Knee Bursitis, Treatment of Bursitis, Traumatic Prepatellar Neuralgia, Fat Pad Syndrome, Ligamentous Injuries, Mechanism of Injury, History, Examination, How Much Time Has Elapsed since the Injury?, Is There a Joint Effusion?, Is There Localized Tenderness?, Are There Any Abnormalities with Stress Testing?, Is There Muscle Weakness?, Imaging, Initial Treatment, Definitive Treatment, Collateral Ligaments, Cruciate Ligaments, Complications, Meniscal Injuries, Mechanism of Injury, Examination, Joint Line Pain, Joint Effusion, Locking, Knee Giving Way, Imaging, Associated Injuries, Treatment, Osteochondritis Dissecans, Clinical Presentation, Imaging, Treatment, Osteochondral Injury, Examination, Treatment, Patellofemoral Dysfunction (Chrondromalacia Patellae), Clinical Presentation, Imaging, Treatment, Knee Dislocations, Mechanism of Injury, Examination, Imaging, Associated Injuries, Vascular Injury, Ligamentous Injury, Nerve Injury, Treatment, Complications, Proximal Tibiofibular Dislocation, Mechanism of Injury, Examination, Imaging, Associated Injuries, Treatment, Complications, Patellar Dislocation, Mechanism of Injury, Examination, Imaging, Associated Injuries, Treatment, Complications.
Excerpt:
"Rapid repetitive acceleration, deceleration, jumping, and landing result in microtears of the extensor tendon matrix at three distinct locations: (1) the quadriceps tendon as it inserts into the patella, (2) the patellar tendon at the inferior aspect of the patella, and (3) the patellar tendon as it inserts into the tibial tubercle.44During examination, the knee should be held at full extension. If the quadriceps tendon is involved, tenderness will be present over the insertion of the quadriceps tendon or the upper pole of the patella. Patients with patellar tendinopathy will have tenderness at the lower pole of the patella and the proximal portion of the patellar tendon.44The injury may be either direct or indirect. The direct mechanism is less common and is the result of a violent impact against a taut quadriceps tendon. The more common indirect mechanism results from forced flexion when the quadriceps is contracted. This mechanism is commonly seen in patients who stumble while descending a staircase or stepping down from a curb.57,58This bursa is located..."
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