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WHAT'S KNOWN ON THIS SUBJECT:Osgood-Schlatter disease symptoms may wax and wane until maturity and affect sport confidence and participation periodically. Chronic sequelae may include anterior knee pain, kneeling discomfort, or sports limitation. Symptom reduction parallels resolution of patellar tendinopathy by MRI/ultrasound, although ossicles may persist radiographically. WHAT THIS STUDY ADDS:Small-needle injection of the patellar tendon enthesis/tibial apophysis with 12.5% dextrose was safe and well tolerated in adolescents with recalcitrant OsgoodSchlatter disease. Dextrose injection resulted in more rapid and frequent achievement of unaltered sport and asymptomatic sport than did usual care. abstract OBJECTIVE: To examine the potential of dextrose injection versus lidocaine injection versus supervised usual care to reduce sport alteration and sport-related symptoms in adolescent athletes with OsgoodSchlatter disease. PATIENTS AND METHODS: Girls aged 9 to 15 and boys aged 10 to 17 were randomly assigned to either therapist-supervised usual care or double-blind injection of 1% lidocaine solution with or without 12.5% dextrose. Injections were administered monthly for 3 months. All subjects were then offered dextrose injections monthly as needed. Unaltered sport (Nirschl Pain Phase Scale Ͻ 4) and asymptomatic sport (Nirschl Pain Phase Scale ϭ 0) were the threshold goals. RESULTS: Sixty-five knees in 54 athletes were treated. Compared with usual care at 3 months, unaltered sport was more common in both dextrose-treated (21 of 21 vs 13 of 22; P ϭ .001) and lidocaine-treated (20 of 22 vs 13 of 22; P ϭ .034) knees, and asymptomatic sport was more frequent in dextrose-treated knees than either lidocaine-treated (14 of 21 vs 5 of 22; P ϭ .006) or usual-care-treated (14 of 21 vs 3 of 22; P Ͻ .001) knees. At 1 year, asymptomatic sport was more common in dextrose-treated knees than knees treated with only lidocaine (32 of 38 vs 6 of 13; P ϭ .024) or only usual care (32 of 38 vs 2 of 14; P Ͻ .0001). CONCLUSIONS: Our results suggest superior symptom-reduction efficacy of injection therapy over usual care in the treatment of OsgoodSchlatter disease in adolescents. A significant component of the effect seems to be associated with the dextrose component of a dextrose/ lidocaine solution. Dextrose injection over the apophysis and patellar tendon origin was safe and well tolerated and resulted in more rapid and frequent achievement of unaltered sport and asymptomatic sport than usual care. Pediatrics 2011;128:e1121-e1128

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Objective-The primary aim of this study is to establish the validity of greyscale-based quantitative ultrasound (QUS) measures of the biceps and supraspinatus tendons.Design-Nine QUS measures of the biceps and supraspinatus tendons were computed from ultrasound images collected from sixty-seven manual wheelchair users. Shoulder pathology was measured using questionnaires, physical examination maneuvers, and a clinical ultrasound grading scale.Results-Increased age, duration of wheelchair use, and body mass correlated with a darker, more homogenous tendon appearance. Subjects with pain during physical examination tests for biceps tenderness and acromioclavicular joint tenderness exhibited significantly different supraspinatus QUS values. Even when controlling for tendon depth, QUS measures of the biceps tendon differed significantly between subjects with healthy tendons, mild tendinosis, and severe tendinosis. Clinical grading of supraspinatus tendon health was correlated with QUS measures of the supraspinatus tendon.Conclusions-Quantitative ultrasound is valid method to quantify tendinopathy and may allow for early detection of tendinosis. Manual wheelchair users are at a high risk for developing shoulder tendon pathology and may benefit from quantitative ultrasound-based research that focuses on identifying interventions designed to reduce this risk. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. NIH Public Access Author ManuscriptAm J Phys Med Rehabil. Author manuscript; available in PMC 2011 May 1. Ultrasound enables dynamic real-time evaluation of musculoskeletal structures and has been widely applied to evaluate shoulder integrity 1,2 . Tendinopathy on ultrasound has been qualitatively described as an enlargement of the tendon and a disruption of the normal fibrillar pattern 3 . Often the diagnosis of tendinopathy is subjective and based on the experience of the examiner. We have recently described a grading scale of musculoskeletal shoulder pathology that includes a rating of tendon health ranging from normal to varying degrees of tendinopathy or tears 4 . While this scale allows researchers to quantify various pathologies at the shoulder, the validity of the ratings is still dependent on the operator's perception of the scan. Using image analysis and a unique localization method, we aim to derive objective, quantitative descriptors of tendon health which will facilitate ultrasoundbased research.Few attempts have been made to relate quantitative measures of tendon appearance to clinically documented pain or pathology. Subjects with chronic tendinopathy have been shown to have larg...

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