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Endoscopic Curettage and Bone Grafting of Enchondroma of Proximal Phalanx of Finger

ABSTRACT: An enchondroma is a benign tumor in the medullary cavity of bone, which is composed of mature hyaline cartilage. It has a predilection for the ulnar-sided tubular bones of the hand and occurs most commonly in the proximal phalanx, and less commonly in the middle phalanx and metacarpals, and rarely in the distal phalanx. The treatment options for enchondromas include conservative regular follow-up or surgery. Operation is indicated in symptomatic enchondroma or lesions larger than 3 to 4 cm. The purpose of this Technical Note is to report the technical details of endoscopic curettage and bone grafting of enchondroma of proximal phalanx of finger. This minimally invasive approach can preserve the cortical integrity and periosteum of the involved phalanx. Technique Video Video 1 Endoscopic curettage and bone grafting of enchondroma of proximal phalanx of the left ring finger. The patient is in the supine position with the operated hand on the side table. A bone tunnel is created between the radial proximal and ulnar distal portals. The radial proximal and ulnar distal portals are interchangeable as the viewing and working portals. The tumor tissue is biopsied and resected piecemeal. With the ulnar distal portal as the viewing portal, the excavated lesion is bone grafted via the radial proximal portal.

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PROVIDER: S-EPMC10466138 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature

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Project description:BackgroundAlthough aneurysmal bone cysts (ABCs) are benign tumours, they have the potential to be locally aggressive. Various treatment approaches, such as en bloc resection, open curettage, radiotherapy, sclerotherapy, and embolization have been proposed, but the most appropriate treatment should be selected after considering the risk of tumour recurrence and treatment complications. Endoscopic curettage (ESC) may be a less invasive alternative to open curettage for ABC treatment. We aimed to describe the use of ESC for the treatment of ABCs and to report our clinical outcomes, including the incidence rate of recurrence, radiological appearance at final follow-up, time to solid union, complications, and postoperative function.MethodsBetween 1998 and 2015, 30 patients (18 men and 12 women; mean age, 17.4 years) underwent ESC for the treatment of primary ABCs at our hospital (mean postoperative follow-up, 55 months). ESC was performed under arthroscopic guidance for direct visualization, and curettage extended until normal bone was observed in the medullary cavity. To investigate bone healing after ESC, we evaluated the consolidation of cysts at the final evaluation (based on the modified Neer classification) and time to solid union after surgery, which was defined as sufficient cortical bone thickness to prevent fracture and allow physical activities.ResultsRecurrence was identified in 3 cases (10%). Curative outcomes were obtained after repeated ESC or open curettage. A log-rank analysis indicated that age < 10 years (p = 0.004) and contact of the tumour with the physis (p = 0.01) increased the risk of tumour recurrence. Residual tumours were identified in 9 cases (30%); these lesions remained inactive over the extended follow-up period. The average time to solid union after endoscopic curettage was 3.2 months. Transient radial nerve palsy was identified in 1 case. Good postoperative functional recovery occurred in all cases.ConclusionsESC is a minimally invasive technique for the treatment of ABCs, and the tumour recurrence rate is comparable to that of other standard procedures. However, the application of this method should be carefully considered, especially for patients < 10 years and when the tumour comes in contact with the physis.

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Endoscopic Curettage and Bone Grafting of Enchondroma of Proximal Phalanx of Finger

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