--- title: Jumper’s Knee - ProScan Education description: This injury is an unhealed partial tear usually at the bone-tendon interface. --- # Dr. Pomeranz's Ultimate Guide to : ## MRI of the Knee ## Jumper's Knee  This injury is an unhealed partial tear usually at the bone-tendon interface.1   *![image77](https://info.medality.com/hs-fs/hubfs/Project%20Cerebro%20(All%20images)/image77.png?width=883&height=378&name=image77.png)*      ## **Jumper’s Knee: Clinical Presentation** When the patellar tendon, the tissue connecting the patella to the tibia, is overused, it can become inflamed. Continuously irritating or injuring this tissue with jumping often leads to severe pain, proximal tendon injury, or tendinopathy / tear.     ## **Jumper’s Knee: Injury** Infrapatellar rupture is usually sports-related in athletes, and focal signal at the infrapatellar teno-osseous junction without rupture is known as “jumper’s knee”.     ## **Jumper’s Knee: Pearls** - “Jumper’s knee” is seen in volleyball and basketball players:1 - lnfrapatellar tendinitis (subpatellar) is also called jumper's knee with intermediate T1 signal and hyperintense signal on fat-suppressed water emphasized images at the inferior patellotendinous attachment1     ## **Jumper’s Knee: Associations** May be associated with Sinding-Larsen-Johansson disease1 and infrapatellar spurs     ## **Jumper’s Knee: References** 1. Pomeranz SJ. Gamuts & Pearls in MRI & Orthopedics. Ohio, The Merten Company, 1997.   ** **   ## **Jumper’s Knee: Example** [*Click here to launch this case*](http://cases.proscan.com/256095554212)   This 30-year-old male presents with knee pain after a motor vehicle accident. However, his imaging should have you immediately thinking about his athletic background. Which two sports stand out as his likely hobbies? Bonus points if you know a position in one of the sports that seems to see this injury even more frequently.   ![image31](https://info.medality.com/hs-fs/hubfs/Project%20Cerebro%20(All%20images)/image31.png?width=350&height=350&name=image31.png)    ![image7](https://info.medality.com/hs-fs/hubfs/Project%20Cerebro%20(All%20images)/image7.png?width=350&height=350&name=image7.png) **Image 1 - Sagittal PD ** **                                               Image 2 - Sagittal PD**   This man likely plays volleyball and/or basketball. He has “jumper’s knee” (images 1 and 2, arrows) or infrapatellar tendinopathy with retropatellar swelling. Middle blockers in volleyball are especially prone to this abnormality. Osseous structures appear grossly intact. Subtle diffuse reactive osteoedema is identified in the distribution of the patella without evidence of fracture. Prepatellar and infrapatellar soft tissue swelling is noted. Diffuse retropatellar soft tissue swelling is also demonstrated. Partial thickness interstitial tear is identified involving substance of the infrapatellar tendon at the patellar tenoosseous junction, measuring approximately 4 mm in length. Tendinosis is a term often used to describe a diffusely large hypertrophic tendon surrounded by scar tissue.   ## **Table of Contents**  [Clinical Presentation](https://info.medality.com/jumpers-knee#Jumper's%20Knee:%20Clinical%20Presentation) [Injury](https://info.medality.com/jumpers-knee#Jumper's%20Knee:%20Injury) [Pearls](https://info.medality.com/jumpers-knee#Jumper's%20Knee:%20Pearls) [Associations](https://info.medality.com/jumpers-knee#Jumper's%20Knee:%20Associations) [References](https://info.medality.com/jumpers-knee#Jumper's%20Knee:%20References) [Example](https://info.medality.com/jumpers-knee#Jumper's%20Knee:%20Example) ## ** ** [![Explore MRI Online's MSK Imaging Courses](https://no-cache.hubspot.com/cta/default/4177793/e30972f9-1305-47ab-8629-838627df4437.png)](https://cta-redirect.hubspot.com/cta/redirect/4177793/e30972f9-1305-47ab-8629-838627df4437) [![View Courses](https://no-cache.hubspot.com/cta/default/4177793/4b4ae251-ef8e-4c9d-8bea-ec59f19899e8.png)](https://cta-redirect.hubspot.com/cta/redirect/4177793/4b4ae251-ef8e-4c9d-8bea-ec59f19899e8) - [**](https://www.facebook.com/proscaneducation/) New MRI Cases Sent Weekly ### About Us We're on a mission to bring the best online MRI education to the world's radiologists ### Office 5400 Kennedy Ave. Cincinnati, OH 45202 ### Contact Us M-F 8AM-5PM EST +1 866-MRI-EDUC (866-674-3382) support@medality.com ### Latest Cases to Review © 2018 [Medality / MRI Online](https://medality.com/) [Terms of Use](https://medality.com/terms/) | [Privacy Policy](https://medality.com/privacy-policy/) ** google-site-verification=ecoazcFTJuw2sjsuFaHY5TQ03ZyOnJrReauQoQP4DBI