Tendon Rupture
Quadriceps Tendon RuptureDefinition:
A complete tear will result in complete separation of the soft tissues. When the quadriceps tendon completely tears, the muscle is no longer anchored to the patella. Without this attachment, the knee cannot straighten when the quadriceps muscles contract (AAOS). Usually result from eccentric overload of the extensor mechanism or direct trauma (Dutton). The quadriceps tendon may become weakened predisposing it to a tear, causes for weakness include: tendonitis, chronic diseases (chronic renal failure, hyperparathyroidism, gout, leukemia, rheumatoid arthritis, systemic lupus erythematosus, diabetes mellitus, infection and metabolic disease), steroid use, immoblization (AAOS). Subjective:
Objective: To diagnose this condition the patient will be unable to actively extend the knee and there is a palpable defect at site of injury, radiographs or MRI will confirm fractures or avulsions (Dutton & AAOS). Intervention:
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Patellar Tendon RuptureDefinition:
A complete tear will result in complete separation of the soft tissues (AAOS). Usually result from eccentric overload of the extensor mechanism or direct trauma (Dutton). The patellar tendon often tears where it attaches to the patella and may break a piece of bone off, the tendon is completely separated from the patella. This missing attachment causes the inability to straighten the knee. When a tear is caused by a medical condition like tendonitis the tendon usually tears in the middle (AAOS). Tendon weakness is more likely to lead to a tear, causes of weakness are: patellar tendonitis, chronic disease (chronic renal failure, rheumatoid arthritis, systemic lupus erythmatosus, diabetes mellitus, infection, metabolic disease), and steroid use (AAOS). Subjective:
Objective: To diagnose this condition the patient will be unable to actively extend the knee and there is a palpable defect at site of injury, radiographs or MRI will confirm fractures or avulsions (Dutton & AAOS). Intervention:
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References:
- Dutton M. Orthopaedic Examination, Evaluation, and Intervention. 2nd ed: The McGraw-Hill Companies, Inc.; 2008.
- AAOS. Quadriceps Tendon Tear. American Academy of Orthopaedic Surgeons and American Orthopaedic Society for Sports Medicine. Accessed 23 June 2012 http://orthoinfo.aaos.org/topic.cfm?topic=A00294
- AAOS. Patellar Tendon Tear. American Academy of Orthopaedic Surgeons and American Orthopaedic Society for Sports Medicine. Accessed 23 June 2012 http://orthoinfo.aaos.org/topic.cfm?topic=A00512