良性骨肿瘤在生命的头三十年期间最为常见，经常使骨头变得脆弱，可能会导致病理性骨折。对于原发性骨肿瘤的治疗存在着巨大的多样性和争议，这取决于肿瘤的范围。近年来，手术中填充这些病灶的趋势逐渐增加。我们假设在某些良性骨肿瘤中，刮除术后填充产生的空腔是不必要的。本研究旨在确定在清扫良性骨肿瘤后是否有必要填充结局性空腔，并表现各种充填材料。本研究回顾了在Menoofia大学-骨科肿瘤学部进行单纯或扩大清扫（有或没有移植或充填）的根据Enneking分类诊断为良性骨肿瘤的患者的医疗记录（2015年1月至2020年2月）。通过使用Image J程序在普通X线照片上测量病变的尺寸（长度、宽度和深度），进行医疗记录的回顾。根据修正的Neer分类，如适用，将结果的腔体填充程度分为四类。使用肌肉骨骼肿瘤学会（MSTS）评分进行功能评估。总体而言，研究包括接受手术干预的88名初发性骨肿瘤患者。患者的平均年龄为22.61 + 13.497（3-58）岁。有48名男性和40名女性（54名右侧和34名左侧）。平均随访期为28.09 + 16.13个月。最常见的部位是15名患者的股骨远端，10名患者的股骨近端和12名患者的胫骨近端。最常见的诊断是20名患者的巨细胞瘤，其次是19名患者的UBC，15名患者的ABC和13名患者的软骨瘤。23名患者接受了简单清扫，而65名患者接受了扩大清扫。平均MSTS为28.78±1.68。根据修改后的Neer分类，分类了55个病变。32名患者被归为完全愈合的类型1，22名患者被归为部分愈合的类型2，只有一个被归为复发病变。7名患者（7.9％）发生局部复发。通常需要在切除病理组织后填充空腔，但并不总是必须的。这取决于病变类型和刮除术后形成的空腔的大小。需要个性化的手术，并应考虑额外的固定。

Benign bone tumours occur most commonly during the first through third decades of life and often weaken the bones, which may predispose them to pathological fractures. Great diversity and debate in the management of primary bone tumours are based on the tumour extent. There has been an increasing trend toward the intra-operative filling of these lesions. We hypothesised that in some benign bone tumours, filling the resulting cavity after curettage was unnecessary. This study was carried out to determine whether it is necessary to fill the resultant cavity after the curettage of benign bone tumours and to represent various fillers.A retrospective study of patients diagnosed as benign bone tumours according to the Enneking classification who underwent simple or extended curettage at Menoufia university-Orthopedic Oncology Division (with or without grafting or filling) during the surgical treatment (Jan 2015 to Feb 2020). A review of the medical records was done. Lesions' size (length, width and depth) was measured on plain radiographs using the image j program. When applicable, degrees of filling of the resultant cavity were classified into four categories, according to Modified Neer's classification. Functional evaluation using the musculoskeletal tumour society (MSTS) score was reviewed.Overall, 88 patients diagnosed with a primary bone tumour and who received the surgical intervention were included in the study. The mean age of the patients was 22.61+13.497 (3-58) years. There were 48 males and 40 females (54 right and 34 left). The mean follow-up period was 28.09+16.13 months. The most common location was the distal femur in 15 patients, the proximal femur in 10 patients and the proximal tibia in 12 patients. The most common diagnosis was giant cell tumour in 20 patients, followed by UBC in 19 patients, ABC in 15 patients and enchondroma in 13 patients. Twenty-three patients had simple curettage, while 65 patients had extended curettage. Mean MSTS was 28.78±1.68. Fifty-five lesions were classified according to modified Neer's classification.Thirtty-two patients were classified as type 1 with complete healing,22 patient was classified as type 2 with partial healing, and only one was classified as a recurrent lesion. Seven patients (7.9%) developed local recurrences.Filling the resulting cavity after the removal of the pathological tissues is usually necessary but not always required. This is determined by the type of lesion and the size of the resulting cavity following curettage. Individualised surgery is required; additional fixation should be considered.