PMID- 37964467 OWN - NLM STAT- MEDLINE DCOM- 20240214 LR - 20240214 IS - 1944-7876 (Electronic) IS - 1071-1007 (Linking) VI - 45 IP - 2 DP - 2024 Feb TI - Outcomes of Platelet-Rich Plasma Infiltration and Weightbearing Cast Immobilization in Distal Tibialis Anterior Tendinopathy: A Prospective Cohort Study. PG - 158-165 LID - 10.1177/10711007231210506 [doi] AB - BACKGROUND: Distal tibialis anterior tendinopathy (DTAT) is a chronic condition that may lead to functional impairment and secondary forefoot deformities when left untreated. Current clinical practice is mainly guided by case reports and small retrospective case series; little consensus exists on which treatment protocol is most effective. This study aims to assess a conservative treatment for DTAT consisting of PRP infiltration and walking cast immobilization. METHODS: This prospective study included 18 feet in 18 patients, recruited between September 2020 and September 2022 at a single institution. Ultrasonography was performed; leukocyte-poor PRP was infiltrated around the tibialis anterior tendon insertion. Walking cast immobilization was used for 3 weeks after infiltration, followed by eccentric exercises of the DTAT, and gastrocnemius-soleus muscle complex stretching. Clinical findings, visual analog scale (VAS), Foot Function Index (FFI), and American Orthopaedic Foot & Ankle Society (AOFAS) midfoot scores were recorded at inclusion, and 6 and 12 weeks after PRP infiltration. Minimal clinically important difference (MCID) limits were researched to assess clinical relevance of statistical outcomes. Means were determined for age, sex, and body mass index (BMI). One-way repeated measures ANOVA was performed over time for FFI, AOFAS, and VAS scores. RESULTS: Mean age was 65 years with a mean BMI of 25. Tendon thickening and hypoechogenicity were the most commonly reported ultrasonographic findings. Significant improvement from baseline VAS (VAS(rest): 4.71 +/- 2.7, VAS(activity): 5.66 +/- 2.5) to 12 weeks follow-up (VAS(rest): 2.14 +/- 2.7, VAS(activity): 3.34 +/- 2.5) was found. Both AOFAS and FFI(Total) improved significantly from baseline (AOFAS: 66.9 +/- 3.3, FFI(Total): 32.9 +/- 3.3) to 6-week follow-up (AOFAS(6w): 79.4 +/- 3.3, P = .019; FFI(Total): 19.4 +/- 3.3, P = .011). No statistically significant further improvement was found at 12 weeks compared to 6 weeks' follow-up. Two (11%) patients chose operative treatment because of persisting symptoms. CONCLUSION: We found that PRP infiltration with walking cast immobilization as a first-line treatment was associated with general early symptom improvement. LEVEL OF EVIDENCE: Level IV, case series. FAU - Desomer, Lies AU - Desomer L AUID- ORCID: 0000-0002-6306-9641 AD - Department of Orthopedic Surgery, St-Elisabeth General Hospital, Herentals, Belgium. FAU - van Beek, Nathalie AU - van Beek N AD - Department of Orthopedic Surgery, St-Elisabeth General Hospital, Herentals, Belgium. FAU - Van Riet, Anne AU - Van Riet A AD - Department of Orthopedic Surgery, St-Elisabeth General Hospital, Herentals, Belgium. FAU - Verfaillie, Stefaan AU - Verfaillie S AD - Department of Orthopedic Surgery, St-Elisabeth General Hospital, Herentals, Belgium. LA - eng PT - Comment PT - Journal Article DEP - 20231114 PL - United States TA - Foot Ankle Int JT - Foot & ankle international JID - 9433869 SB - IM CON - J Am Acad Orthop Surg. 2016 Feb;24(2):113-22. PMID: 26803546 MH - Humans MH - Aged MH - Prospective Studies MH - Retrospective Studies MH - *Tendinopathy/surgery MH - Muscle, Skeletal MH - *Platelet-Rich Plasma MH - Weight-Bearing MH - Treatment Outcome OTO - NOTNLM OT - midfoot OT - outcome studies OT - platelet-rich plasma OT - tendon disorders OT - tibialis anterior tendon COIS- Ethical ApprovalThis study was approved by the Ethics Committee review board of AZ Herentals and UZ Leuven (ref. B322202043314) and was conducted according to the Declaration of Helsinki (2013) and Good Clinical Practice principles. Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. ICMJE forms for all authors are available online. EDAT- 2023/11/15 06:43 MHDA- 2024/02/12 15:43 CRDT- 2023/11/15 00:22 PHST- 2024/02/12 15:43 [medline] PHST- 2023/11/15 06:43 [pubmed] PHST- 2023/11/15 00:22 [entrez] AID - 10.1177/10711007231210506 [doi] PST - ppublish SO - Foot Ankle Int. 2024 Feb;45(2):158-165. doi: 10.1177/10711007231210506. Epub 2023 Nov 14.