现在,我们都知道奥斯本-科特里尔病变,但我们仍然不知道如何治疗它们。

IF 1.8 Q2 ORTHOPEDICS Clinics in Shoulder and Elbow Pub Date : 2023-09-01 DOI:10.5397/cise.2023.00696
Jong Heon Lee, Tae Kang Lim
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Identifying this bony lesion on simple radiographs helps the surgeon recognize the associated posterolateral rotatory instability, which is mainly caused by injury to soft tissue such as the lateral ulnar collateral ligament (LUCL). However, the optimal treatment of Osborne-Cotterill lesions has not been established. According to previous reports on the surgical treatment of this injury, reconstruction of the LUCL was the most common approach, but how the bony lesion was addressed varied, including bony fragment removal [3], bone graft [7], osteochondral autograft, osteochondral allograft transfer [8] or no treatment [3,9]. Thus, I read with great interest the recent paper entitled “Prosthetic resurfacing of engaging posterior capitellar defects in recurrent posterolateral rotatory (PLRI) of the elbow,” by Rotman et al. [10]. The authors reported five patients with PLRI and associated Osborne-Cotterill lesions that were surgically treated with repair/reconstruction of the lateral collateral ligament and reconstruction of the capitellar defect with a metal prosthesis. The implant was originally designed for metatarsal head resurfacing (HemiCAP Toe Classic, Arthrosurface), and so this was an off-label use in the elbow joint, as acknowledged by the authors. Midterm follow-up (median, 4.5 years postoperatively; range, 1–6 years) showed excellent results with no instability, prothesis loosening or reoperation, except for mild arthritis in one patient. This study has several strengths. Given that LUCL reconstruction without addressing the bony lesion can cause recurrent instability [2], resurfacing of the engaging posterior capitellar defect shown in this study can be a useful option as a concomitant procedure in LUCL reconstruction. 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Given that LUCL reconstruction without addressing the bony lesion can cause recurrent instability [2], resurfacing of the engaging posterior capitellar defect shown in this study can be a useful option as a concomitant procedure in LUCL reconstruction. This study also reminds the treating surgeons of the importance of Osborne-Cotterill lesions in elbow instability. Off-label use of a metatarsal prosthesis is a limitation of this study, which may not be allowed elsewhere. Metatarsal resurfacing prostheses also may not be available or familiar to all elbow surgeons. Future studies related to Osborne-Cotterill lesions are needed. First, a well-organized randomized clinical trial comparing ligament reconstruction with or without addressing bony lesions should be conducted to establish the indications for the combined bony procedure. Given the relative rarity of this lesion, a multicenter collaboration will be necessary. 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Now, we all know about the Osborne-Cotterill lesions, but we still don't know how to treat them.
Received: August 9, 2023 Revised: August 10, 2023 Accepted: August 10, 2023 Correspondence to: Tae Kang Lim Department of Orthopedic Surgery, Nowon Eulji Medical Center, Eulji University School of Medicine, 68 Hangeulbiseong-ro, Nowon-gu, Seoul 01830, Korea Tel: +82-2-970-8036, Fax: +82-2-970-2773, E-mail: shouldertk@gmail.com, ORCID: https://orcid.org/0000-0001-8752-3987 In 1966, Osborne and Cotterill [1] described a posterior capitellum defect associated with recurrent elbow instability. The eponymous term “Osborne-Cotterill lesion” was later coined by Jeon et al. [2] in 20081). Since then, it has been used to describe capitellar bony defects or loose fragments detached from the posterolateral margin of the capitellum associated with posterolateral rotatory instability of the elbow [3-6]. Identifying this bony lesion on simple radiographs helps the surgeon recognize the associated posterolateral rotatory instability, which is mainly caused by injury to soft tissue such as the lateral ulnar collateral ligament (LUCL). However, the optimal treatment of Osborne-Cotterill lesions has not been established. According to previous reports on the surgical treatment of this injury, reconstruction of the LUCL was the most common approach, but how the bony lesion was addressed varied, including bony fragment removal [3], bone graft [7], osteochondral autograft, osteochondral allograft transfer [8] or no treatment [3,9]. Thus, I read with great interest the recent paper entitled “Prosthetic resurfacing of engaging posterior capitellar defects in recurrent posterolateral rotatory (PLRI) of the elbow,” by Rotman et al. [10]. The authors reported five patients with PLRI and associated Osborne-Cotterill lesions that were surgically treated with repair/reconstruction of the lateral collateral ligament and reconstruction of the capitellar defect with a metal prosthesis. The implant was originally designed for metatarsal head resurfacing (HemiCAP Toe Classic, Arthrosurface), and so this was an off-label use in the elbow joint, as acknowledged by the authors. Midterm follow-up (median, 4.5 years postoperatively; range, 1–6 years) showed excellent results with no instability, prothesis loosening or reoperation, except for mild arthritis in one patient. This study has several strengths. Given that LUCL reconstruction without addressing the bony lesion can cause recurrent instability [2], resurfacing of the engaging posterior capitellar defect shown in this study can be a useful option as a concomitant procedure in LUCL reconstruction. This study also reminds the treating surgeons of the importance of Osborne-Cotterill lesions in elbow instability. Off-label use of a metatarsal prosthesis is a limitation of this study, which may not be allowed elsewhere. Metatarsal resurfacing prostheses also may not be available or familiar to all elbow surgeons. Future studies related to Osborne-Cotterill lesions are needed. First, a well-organized randomized clinical trial comparing ligament reconstruction with or without addressing bony lesions should be conducted to establish the indications for the combined bony procedure. Given the relative rarity of this lesion, a multicenter collaboration will be necessary. We should also address the issue of how the size of bony defects may impact treatment. As Osborne and Cotterill [1] first correlated capitellar or radial head lesions to bone loss in the humeral head (Hill-Sachs lesion) or anterior aspect of the glenoid with recurrent shoulder instability, we should measure the amount of capitellar bone loss with three-dimensional computed tomography scans, like gleeISSN 2288-8721
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