Popliteus Tendinopathy: A Poorly Understood Cause of Knee Pain
Popliteus Tendinopathy, sometimes referred to as popliteal tendonitis or tenosynovitis, is a rare and poorly described cause of knee pain. It was first described by Barnes in 1995[1]Barnes CL, Scott RD. Popliteus tendon dysfunction following total knee arthroplasty. J Arthroplasty. 1995 Aug;10(4):543-5..
Case Vignette
A) Patient seated, hip and knee flexed to 90°, active external rotation
B) Patient seated, hip and knee flexed to 45°, active Internal rotation
C) Patient standing, hip and knee flexed to 90°, active external rotation
D) Patient seated, hip and knee flexed to 90°, active Internal rotation
Introduction
Pathophysiology
Presentation
Diagnosis and Management
Image 3. Long axis view of popliteus tendon corticosteroid injection with needle in plane[8]Smith, Jay, et al. “Sonographically guided popliteus tendon sheath injection: techniques and accuracy.” Journal of Ultrasound in Medicine 29.5 (2010): 775-782.
Case Conclusion
Answer A. The ‘Garrick test’ is used to help identify the popliteus muscle as the cause of knee pain and is associated with total knee arthroplasty. It’s also very difficult to identify clinically. The test is performed by having the patient in a seated position with the hip and knee flexed to 90 degrees. The examiner then grasps the lower leg and asks the patient to externally rotate it against resistance. A positive test is pain during the maneuver in the posterolateral corner of the knee or along the distribution of the tendon.
– Read More @ Wiki Sports Medicine: https://wikism.org/Popliteus_Tendinopathy
References[+]
↑1 | Barnes CL, Scott RD. Popliteus tendon dysfunction following total knee arthroplasty. J Arthroplasty. 1995 Aug;10(4):543-5. |
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↑2 | https://www.sportsinjurybulletin.com/popliteus-assessment-and-rehabilitation/ |
↑3 | Geannette, Christian, et al. “Ultrasound diagnosis of osteophytic impingement of the popliteus tendon after total knee replacement.” Journal of Ultrasound in Medicine 37.9 (2018): 2279-2283. |
↑4 | Garrick J, Webb D. Sports Injuries: Diagnosis and Management. Philadelphia, PA: WB Saunders Co; 1990. |
↑5 | Barnes CL, Scott RD. Popliteus tendon dysfunction following total knee arthroplasty. J Arthroplasty 1995; 10:543–545. |
↑6 | Tibrewal SB. Acute calcific tendinitis of the popliteus tendon: an unusual site and clinical syndrome. Ann R Coll Surg Engl 2002; 84:338–341. |
↑7 | Cooper DE. Snapping popliteus tendon syndrome: a cause of mechanical knee popping in athletes. Am J Sports Med 1999; 27:671–674. |
↑8 | Smith, Jay, et al. “Sonographically guided popliteus tendon sheath injection: techniques and accuracy.” Journal of Ultrasound in Medicine 29.5 (2010): 775-782 |