{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T19:16:11Z","timestamp":1790622971888,"version":"4.1.0"},"reference-count":38,"publisher":"BMJ","issue":"1","license":[{"start":{"date-parts":[[2020,7,22]],"date-time":"2020-07-22T00:00:00Z","timestamp":1595376000000},"content-version":"unspecified","delay-in-days":21,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Open Sport Exerc Med"],"accepted":{"date-parts":[[2020,6,23]]},"published-print":{"date-parts":[[2020,7]]},"abstract":"<jats:p>There is a need for effective therapeutic options for resistant patellar tendinopathy. Ultrasound (US)-guided arthroscopic debridement has demonstrated promising clinical results.<\/jats:p>\n               <jats:sec>\n                  <jats:title>Objectives<\/jats:title>\n                  <jats:p>To prospectively evaluate pain, function, tendon structure and adverse events after US and colour Doppler (CD)-guided arthroscopic debridement for persistent painful patellar tendinopathy.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Materials and methods<\/jats:title>\n                  <jats:p>Twenty-three consecutive patients (19 males and 4 females, mean age 28 years (\u00b18), symptom duration 25 months (\u00b121)), who had failed conservative management including progressive loading, were included. US+CD\u2009and ultrasound tissue characterisation (UTC) examination verified the clinical diagnosis and quantified baseline tendon structure. Patients were treated with US+CD-guided arthroscopic debridement followed by a specific rehabilitation protocol. Outcomes were VISA-P score for pain and function and UTC for tendon structure. Adverse events were specifically elicited.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>At 6-month follow-up, mean VISA-P score increased from 40 (\u00b121.0) to 82 (\u00b115) (mean deviation (MD)=42.0, 95% CI 32 to 53, <jats:italic>d<\/jats:italic>=2.4), while organised echo pixels (combined UTC type I+II) increased from 55.0% (\u00b117.0) to 69.0% (\u00b115.0) (MD=14.0, <jats:italic>d<\/jats:italic>=0.7, 95% CI 2 to 21). Both outcomes exceeded minimum detectable change values. Twenty-one participants returned to their prediagnosis activity levels, and there were no significant adverse events.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>US-guided patellar tendon debridement for persistent patellar tendinopathy improved symptoms and tendon structure without complications at 6-month follow-up. A majority (21\/23) of the patients returned to their preinjury activity level. Further studies with longer follow-ups, preferably randomised and controlled, are needed.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1136\/bmjsem-2020-000803","type":"journal-article","created":{"date-parts":[[2020,7,23]],"date-time":"2020-07-23T02:15:14Z","timestamp":1595470514000},"page":"e000803","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":12,"title":["Ultrasound-guided tendon debridement improves pain, function and structure in persistent patellar tendinopathy: short term follow-up of a case series"],"prefix":"10.1136","volume":"6","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1094-3040","authenticated-orcid":false,"given":"Lorenzo","family":"Masci","sequence":"first","affiliation":[{"name":"Department of Sports and Execise Medicine, Queen Mary University of London, London, UK"},{"name":"Department of Sports and Exercise Medicine, ISEH, London, 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