Stemcelldoc's Weblog

December 31, 2011

Distal Quadricep Tendinitis: A complication from blind knee Injection

The risks and possible complications associated with blind injections include failure, increased pain and injury and have been previously discussed.

At the Centeno-Schultz Clinic knee injections are performed under x-ray or MSK ultrasound guidance to ensure accurate placement of the PRP, Regenexx SCP or other platelet derived or bone marrow derived therapies.

Unfortunately when guidance is not used complications can occur.  SG is a case in point.

SG is an athletic 45y/o patient who sustained a meniscus injury and declined traditional surgery where a portion of the tear would be cut out.  Removal of a injured meniscus places increased force on the remaining knee structure and is associated with acceleration of the degeneration process.(blog).

SG acknowledged stem cell therapy as an alternative to knee surgery and opted to proceed with Regenexx SD.    He had undergone multiple therapies which included physical therapy, chiropractic adjustments and injection of  Synvisc, a medically approved DW40.  MSK ultrasound was not used.  SG reported that not only was the injection painful since the provider stuck him three times but after the injection the top portion of his knee cap was red, painful to the touch and movement of the knee was difficult.  It remained painful for weeks thereafter.

Diagnostic knee ultrasound at the Centeno-Schultz Clinic demonstrated inflammation and partial tear of the distal quadriceps tendon.  The previous knee injection most likely injured the tendon.  Complications such as these can be avoided with the use of MSK ultrasound guidance.

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