The main stabilizers of the posterolateral corner of the knee are the lateral collateral ligament, the biceps femoris tendon and the popliteus tendon (Figs. [see App]). Since they play a major role in joint stability, it is crucial to detect their injury (Figs. [see App]). Injuries to the posterolateral corner often occur with tears of the anterior or posterior cruciate ligament. They are particularly common when there are contusions of the anteromedial femoral condyle and the posteromedial tibial plateau. Gaeslin et al. 2010 Furthermore, the term "posterolateral corner" refers to a unit of [...]
The term turf toe refers to hyperextension injuries of the first metatarslophalangeal joint, originally described in football players on artificial turf ("astroturf"). Anatomy: The sesamoid bones are fixed proximally by thin, usually invisible metatarso-sesamoid ligaments and distally by strong sesamophalangeal ligaments. In addition, the tendons of the two heads of the flexor hallucis brevis muscle attach proximally into the sesamoid bones. Laterally, they are connected to the capsule by the accessory collateral ligaments. The abductor hallucis tendon merges laterally with this complex and the adductor hallucis tendon and the deep transverse [...]
Bensler S, Dietrich TJ, Zubler V et al.: Pincer-type MRI morphology seen in over a third of asymptomatic healthy volunteers without femoroacetabular impingement. J Magn Reson Imaging. 2019; 49: 1296-1303. Sueoka T, Tanitame K, Honda Y et al.: Utility of radial reformation of three-dimensional fat-suppressed multi-echo gradient-recalled-echo images for the evaluation of acetabular labral injuries and femoroacetabular impingement. Skeletal Radiol. 2019; 48: 267-273. Dickenson EJ, Wall PDH, Hutchinson CE, Griffin DR: The prevalence of cam hip morphology in a general population sample. Osteoarthritis Cartilage. 2019; 27: 444-448. Schmitz MR, Campbell SE, Fajardo [...]
McConkey MO, Amendola A, Ramme AJ et al.:Arthroscopic agreement among surgeons on anterior cruciate ligament tunnel placement. Am J Sports Med 2012; 40: 2737-46. Pedneault C, Laverdière C, Hart A et al.: Evaluating the Accuracy of Tibial Tunnel Placement After Anatomic Single-Bundle Anterior Cruciate Ligament Reconstruction. Am J Sports Med 2019; 47: 3187-3194. Muramatsu K, Hachiya Y, Izawa H: Serial evaluation of human anterior cruciate ligament grafts by contrast-enhanced magnetic resonance imaging: comparison of allografts and autografts. Arthroscopy 2008; 24: 1038–1044 Ntoulia A, Papadopoulou F, Zampeli F et al.: Evaluation with contrast-enhanced [...]
T1 axial before and 5 months after surgery of a radial tunnel syndrome (= supinator syndrome). The postoperative examination was performed because of increasing weakness in the forearm. It shows a marked atrophy (purple arrows) and denervation edema (orange arrows) of the superficial part of the supinator muscle. Red arrows: Normal supinator muscle, superficial part. Green arrow: Normal supinator muscle, deep part. Blue arrow: Arcade of Frohse with deep branch of radial nerve.
It has already been pointed out, that the tendon quality is a very important factor regarding the outcome of rotator cuff reconstruction.[Chung SW et al.] Above all, in addition to the signs of tendinopathy, a delamination of the torn tendon should be highlighted. It is an additional negativ prognostic factor and complicates cuff repair. In delaminated tears the articular layer is usually retracted more than the bursal layer.[Bierry G et al.] Yet, imaging accuracy for determining the quality of a torn tendon is not known. Delaminating tear of the supraspinatus tendon. [...]