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. 2015 May 30;11(1):7–17. doi: 10.46582/jsrm.1101003

Table 1: Clinical studies discussed in this review.

Series Tendons Degree of evidence Patients (n) Length of follow-up Type of PRP Volume injected Platelet concentration Platelet activation? Local anaesthetic Ultrasound guided infiltration? Physical therapy Results
Silvestre et al. (2012) Lateral epicondylitis Level 3 26 3 months Laboratory technique with one centrifugation 1 infiltration of 3 to 6 mL   No Yes Yes Immobilisation splint for four weeks At 3 months, reduction in pain, improvement in Quick DASH score. Ultrasound showed disappearance of the fissure in 65% of patients and a reduction in the pathological zone and Doppler hyperaemia in 27% of subjects.
Omar et al. (2012) Lateral epicondylitis Level 1 30 6 weeks Laboratory technique with two centrifugations   2x the blood concentration         No difference with the control group (corticoids)
Chaudhury et al. (2013) Lateral epicondylitis Level 4 6 6 months Harvest Smart Prep2 1 infiltration of 3 mL       Yes   Positive changes to the ultrasound structure with a tendency towards increased vascularisation at the myotendinous junction
Krogh et al. (2013) Lateral epicondylitis Level 1 60 3 months GPS II 1 infiltration of 3 to 3.5 mL 8x the blood concentration (leukocyte rich)     Yes Stretching and standardised physical therapy No difference between the 3 groups (PRP, physiological liquid and corticoids)
Mishra et al. (2014) Lateral epicondylitis Level 1 230 24 weeks GPS III 1 infiltration of 2 to 3 mL 5x the blood concentration (leukocyte rich)   Yes     Significant improvement in the PRP group after 24 weeks compared to the control group (local anaesthetic)
Rha et al. (2013) Rotator cuff Level 1 39 6 months Prosys PRP Platelet Concentration System 2 infiltrations of 3 mL at 4 week intervals       Yes Self-conducted therapy, pendular movements, cuff strengthening Significant improvement in the PRP group after the 2nd infiltration
Kesikburun et al. (2013) Rotator cuff Level 1 40 1 year GPS III 1 infiltration of 5 mL   No Yes Yes After 48h of rest, 3 weeks of physical therapy, pendular movements, stretching, posterior cuff and pectorals cuff strengthening No difference with the control group (physiological liquid) at one year
Marques de Almeida et al. (2012) Patellar Level 1 27 6 months Haemonetics MCS+ (cell separator) Gel 1.2 x 106/mm3 0.8 mL of CaCl2 General anaesthetic     Reduction in post-operative pain and accelerated healing under MRI
Gosens et al. (2012) Patellar Level 2 36 18 months Recover System 1 infiltration of 3 mL   Non Yes   Stretching and eccentric physical therapy for 4 weeks Improvement in EVA and VISA-P scores. However, prior infiltrative or surgical treatments reduce the effectiveness of PRP
Rowan et al. (2013) Patellar Level 4 1 6 months   1 infiltration of 2 mL       Yes Nothing for two weeks and 50% in the third week, eccentric exercise from the 4th week onwards Return to prior level of fitness at 6 months
Filardo et al. (2013) Patellar Level 3 43 40 months on average (minimum 36 months) Laboratory technique with two centrifugations 3 infiltrations of 5 mL (at two week intervals)   CaCl2 (Ca2+ = 0.22mEq x dose)   Yes 12 weeks of eccentric physical therapy Improvement in VISA-P. Return to sport: 80%
Vetrano et al. (2013) Patellar Level 1 46 12 months MyCells Autologous Platelet Preparation System 2 weekly infiltrations of 2 mL 3 to 5x the blood concentration   No Yes After 1 week, stretching and isometric then isotonic muscle strengthening Better results than with shock waves
Dragoo et al. (2014) Patellar Level 1 23 26 weeks GPS III 1 infiltration of 6 mL Rich in leokocytes   Yes Yes Direct eccentric physical therapy No difference with the control group (dry needle) at 26 weeks
Charousset et al. (2014) Patellar Level 4 28 3 months ACP 3 weekly infiltrations of 6 mL     No Yes Eccentric physical therapy after 24 hours Improvement in VISA-P, EVA and Lysholm scores. Return to sport: 75%
Kaux et al. (ePub) Patellar Level 3 20 26 weeks Com.Tec (apheresis) 1 infiltration of 6 mL 8.5 - 9 x 105 platelets/μL (no leukocyte) 50μL CaCl2/mL PRP No No Sub-maximal eccentric physical therapy from the 2nd week post-infiltration. Improvement in EVA, IKDC and VISA-P. Return to sport:75%
van Ark et al. (2013) Patellar Level 4 5 26 weeks ACP 1 infiltration of 433 x 109 platelets/L       Yes Immobilisation 48h, Isometric exercises after 1 week, cycle ergometer after 2 weeks, squats from the 2nd week, eccentric physical therapy after 1 month. Improvement in VISA-P
Kaux et al. (2014) Patellar Level 3 30 1 year Com.Tec (apheresis) 1 infiltration of 6 mL 8.5 - 9 x 105 platelets/μL (no leukocytes) 50μL CaCl2/mL PRP No   Sub-maximal eccentric physical therapy from the 2nd week post-infiltration. Improvement in EVA, IKDC and VISA-P.
Silvestre et al. (2014) Calcaneal Level 3 32 3 months Laboratory technique with one centrifugation   2.5 to 3x the blood concentration   Yes Yes Rest 48h, walking with a 10-15mm heel piece. 88% of patients asymptomatic with ultrasound improvements
Filardo et al. (2014) Calcaneal Level 3 27 54 months on average (30 months minimum) Laboratory technique with 2 centrifugations 3 infiltrations of 5 mL (at two week intervals) 5x the blood concentration (+concentrated leukocytes 1.2x the blood concentration) CaCl2 (Ca2+ = 0.22mEq x dose) No Yes 24h cryotherapy after each infiltration. Eccentric physical therapy for 12 weeks after the 2nd infiltration. Improvement in VISA-A, EVA and Tegner scores. Return to sport: 80%
Murawski et al. (2014) Calcaneal Level 4 32 6 months Magellan PRP 1 infiltration of 3 mL     Yes   Orthopaedic boot for 14 days, followed by 8 weeks of isometric physical therapy. 78% of patients asymptomatic