The primary purpose of this study is to assess the long-term safety profile of RCT-01 injections as compared to placebo injections. This study will also measure the long-term impact these injections will have on tendon structure and function and the symptoms of Achilles tendinosis. This is study is designed to follow participants who have completed participation in a clinical trial where they received injections of either RCT-01 or placebo in the Achilles tendon. No clinical interventions will be performed as part of study procedures. The day of study entry (Visit 1) will be coordinated with the participant's final visit in the earlier clinical trial. All participants will return to the clinic for repeat assessments of their Achilles tendinosis and overall health 6, 12 and 18 months after study entry. Furthermore, they will complete 'telephone visits'; during which they will report information on their overall health; 3, 9, and 15 months after study entry. Total duration of patient participation is approximately 18 months.
Study Type
OBSERVATIONAL
Alan McGavin Sports Medicine Centre
Vancouver, British Columbia, Canada
Incidence of adverse events
Comparison of the safety profile between RCT-01/placebo treatment groups. The safety profile is defined by the incidence, relationship to treatment, severity and seriousness of adverse events.
Time frame: 24 months post-injection
Victorian Institute of Sport Assessment - Achilles (VISA-A) questionnaire
pain on palpation and pain on loading (running/jumping)
Time frame: 24 months post-injection
Modified Tegner Activity Scale
Time frame: 24 months post-injection
SF-36 questionnaire
quality of life questionnaire
Time frame: 24 months post-injection
Tendon condition (appearance)
Ultrasound imaging will be utilized to measure region and relative location (from calcaneus) of damage and overall tendon size (in mm)
Time frame: 24 months post-injection
Tendon condition (blood flow)
Ultrasound imaging will be utilized to measure blood flow (vascularization) within the tendon. Defined on ordinal scale
Time frame: 24 months post-injection
Tendon condition (fibrillar pattern)
Fibrillar pattern observed during ultrasound imaging of tendon structure will be graded on ordinal scale.
Time frame: 24 months post-injection
Tendon condition (presence of abnormalities)
Presence/absence of intratentinous calcification, observable tears, and irregularities in calcaneus bone structure will be noted during ultrasound imaging.
Time frame: 24 months post-injection
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