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Arthrosc Tech. 2015 Sep 14;4(5):e429-33. doi: 10.1016/j.eats.2015.04.002. eCollection 2015 Oct.

Diagnosis of Knee Osteochondral Lesions With Ultrasound Imaging.

Author information

1
Department of Pediatric Surgery, Kuopio University Hospital, Kuopio, Finland.
2
Department of Applied Physics, University of Eastern Finland, Kuopio, Finland.
3
Department of Orthopaedics, Traumatology and Hand Surgery, Kuopio University Hospital, Kuopio, Finland.
4
Cancer Center, Kuopio University Hospital, Kuopio, Finland.
5
Department of Clinical Neurophysiology, Kuopio University Hospital, Kuopio, Finland ; Department of Applied Physics, University of Eastern Finland, Kuopio, Finland.
6
Department of Orthopaedics, Traumatology and Hand Surgery, Kuopio University Hospital, Kuopio, Finland ; Bone and Cartilage Research Unit, University of Eastern Finland, Kuopio, Finland.

Abstract

Evaluation of articular cartilage and subchondral bone is essential in the diagnosis of joint diseases and injuries. Interobserver and intraobserver reproducibilities of arthroscopic grading are only poor to moderate. Thus, for quantitative and objective evaluation of cartilage and subchondral bone, ultrasound arthroscopy (UA) has been introduced to clarify this dilemma. Assessment of the clinical feasibility of high-frequency ultrasonography (US) during 6 knee arthroscopies was conducted, and the surgical technique is presented. US imaging was conducted with a flexible 9-MHz US catheter inserted into the joint through conventional portals. US and arthroscopy videos were synchronously recorded, and US parameters for cartilage and subchondral bone characteristics were measured. Arthroscopy and US imaging were combined to perform cartilage grading. UA produced quantitative data on lesion size, as well as cartilage quality, and showed subchondral bone changes. Visualization of an osteochondritis dissecans lesion not detected by conventional arthroscopy and US-guided retrograde drilling were possible with UA. To conclude, UA proved to be clinically feasible and aided in the diagnosis when assessing knee osteochondral lesions.

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