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Knee Pain
Published in Benjamin Apichai, Chinese Medicine for Lower Body Pain, 2021
Patellar tendonitis usually presents the following manifestations: Anterior knee pain that may become worse with activity such as jumping, running, or even prolonged sitting. Pain intensity is usually associated with an increase in sports activity and worse when kneeling down or getting up from a squat. The pain is at first sporadic, occurring only after sports or other physical activity. As the tendon becomes more traumatized, the pain is progressively worse and can interfere with any daily physical activity such as walking, using stairs, and even getting up from sitting for a long period and being unable to straighten the leg. The pain may be worse at night, and the patient may feel stiffness in the morning when getting up.Localized tenderness over the patellar tendon.It may manifest as red, swollen, and warm to touch.Crepitus sounds during leg activity.The affected tendon may appear thickened in comparison to the unaffected side.
Musculoskeletal (including trauma and soft tissues)
Published in Dave Maudgil, Anthony Watkinson, The Essential Guide to the New FRCR Part 2A and Radiology Boards, 2017
Dave Maudgil, Anthony Watkinson
The medial meniscus is attached to the deep fibres of the medial collateral ligament and may become detached from the latter in traumatic injury; the lateral meniscus is not attached to the lateral collateral ligament. Discoid configuration is much more common in the lateral meniscus and more liable to tear. Patellar tendonitis usually occurs at the inferior or superior aspect of the tendon (jumper’s knee). Patella baja (low lying) is associated with achondroplasia. The iliotibial tract is situated on the lateral aspect of the knee.
MRI and Ultrasound
Published in Harry Griffiths, Musculoskeletal Radiology, 2008
This presents as swelling and high signal just below the origin of the patellar tendon. It is due to chronic impingement of the lower pole of the patella on the tendon. It is best seen on sagittal sequences in patients with pointed lower patellae. Patellar tendonitis can occur elsewhere, for example, at the insertion of the tendon into the tibia with swelling of the tendon and increased signal (Fig. 19).
The science of biomechanics can promote dancers’ injury prevention strategies
Published in Physical Therapy Reviews, 2021
Aspasia Fotaki, Athanasios Triantafyllou, Georgios Papagiannis, Sophia Stasi, Papathanasiou Georgios, Savvidou Olga, Charilaos K. Tsolakis, Panayiotis Koulouvaris
Serious or repetitive injuries can complicate or in some cases, even, terminate a dancer’s career [17,19]. Studies have shown that knee joint injuries are among the most frequent in dancers, because of the rotating loads that are applied to the joint. The elements, connective, or contractile, that surround and protect the knee are various and differ both in structure and function. An injury can include: stretching and/or irritation of the anterior cruciate ligaments, causing increased rotary instability of the joint and knee hyperextension; stretching and/or irritation of medial collateral ligaments, compromising the lateral stability of the joint; tearing or rupturing of the menisci; maltracking of the patella in the trochlear groove, resulting in grinding of the articular cartilage of the patellofemoral joint; increasing the incidence of chondromalacia patella and/or patellar tendonitis—‘jumper’s knee’ and predispose the joint to patellar dislocation [20–24].
Ultrasound examination and patellar tendinopathy scores in asymptomatic college jumpers
Published in The Physician and Sportsmedicine, 2018
Matthew L. Fazekas, Dai Sugimoto, Andrea Cianci, Jonathan L. Minor, Gianmichel D. Corrado, Pierre A. d’Hemecourt
Patellar tendon-related pain among jumpers is often called ‘jumper’s knee’ [1] or patellar tendonitis/tendinopathy [2]. The etiology of patellar tendinopathic syndromes was theorized as a result of functional overload of the knee extensor mechanism and usually observed among athletes who engage with jumping sports such as volleyball, basketball, and track jumpers [1]. Mean prevalence rate of patellar tendinopathy in the general population was reported as 8.5%. However, the prevalence rate in jumping sports is higher than the general population. According to a study performed by Zwerver et al., the patellar tendinopathy prevalence rate of basketball and volleyball was documented as 11.8% and 14.4% [3]. Also, the prevalence rate was greater in males than females [3]. When patellar tendinopathy is symptomatic, it can result in significant time loss due to prolonged recovery time. A cross-sectional study conducted by Cook et al. documented that 33% of athletes with patellar tendinopathy were unable to participate in their sports more than 6 months, and further 18% of them were forced to take a rest period of more than 12 months [4].
Cell-based therapy in soft tissue sports injuries of the knee: a systematic review
Published in Expert Opinion on Biological Therapy, 2021
Nardeen Kader, Vipin Asopa, Kwaku Baryeh, David Sochart, Nicola Maffulli, Deiary Kader
Pascual-Garrido [28] reported the five-year outcome of 8 patients, treated with BMC injection for refractory patellar ‘tendonitis’ (deemed as symptoms lasting more than 6 months). Functional outcomes all showed an improvement with varying levels of statistical significance. Ultrasound evaluation showed an improvement in all subjects except one; it is unclear which imaging criteria were used, how they were applied, and whether this was a validated scoring system.