Abstract：
UNASSIGNED: The purpose of this study was to assess the success rate and functional outcomes of bone grafting for periprosthetic bone cysts following total ankle arthroplasty (TAA). Additionally, we evaluated the rate of graft incorporation and identified associated predisposing factors using CT scan.
UNASSIGNED: We reviewed a total of 37 ankles (34 patients) that had undergone bone grafting for periprosthetic bone cysts. A CT scan was performed one year after bone grafting to check the status of graft incorporation. For accurate analysis of cyst volumes and their postoperative changes, 3D-reconstructed CT scan processed with 3D software was used. For functional outcomes, variables such as the Ankle Osteoarthritis Scale score and the visual analogue scale for pain were measured.
UNASSIGNED: Out of 37 ankles, graft incorporation was successful in 30 cases. Among the remaining seven cases, four (10.8%) exhibited cyst re-progression, so secondary bone grafting was needed. After secondary bone grafting, no further progression has been noted, resulting in an overall 91.9% success rate (34 of 37) at a mean follow-up period of 47.5 months (24 to 120). The remaining three cases (8.1%) showed implant loosening, so tibiotalocalcaneal arthrodesis was performed. Functional outcomes were also improved after bone grafting in all variables at the latest follow-up (p < 0.05). The mean incorporation rate of the grafts according to the location of the cysts was 84.8% (55.2% to 96.1%) at the medial malleolus, 65.1% (27.6% to 97.1%) at the tibia, and 81.2% (42.8% to 98.7%) at the talus. Smoking was identified as a significant predisposing factor adversely affecting graft incorporation (p = 0.001).
UNASSIGNED: Bone grafting for periprosthetic bone cysts following primary TAA is a reliable procedure with a satisfactory success rate and functional outcomes. Regular follow-up, including CT scan, is important for the detection of cyst re-progression to prevent implant loosening after bone grafting.
UNASSIGNED: We reviewed a total of 37 ankles (34 patients) that had undergone bone grafting for periprosthetic bone cysts. A CT scan was performed one year after bone grafting to check the status of graft incorporation. For accurate analysis of cyst volumes and their postoperative changes, 3D-reconstructed CT scan processed with 3D software was used. For functional outcomes, variables such as the Ankle Osteoarthritis Scale score and the visual analogue scale for pain were measured.
UNASSIGNED: Out of 37 ankles, graft incorporation was successful in 30 cases. Among the remaining seven cases, four (10.8%) exhibited cyst re-progression, so secondary bone grafting was needed. After secondary bone grafting, no further progression has been noted, resulting in an overall 91.9% success rate (34 of 37) at a mean follow-up period of 47.5 months (24 to 120). The remaining three cases (8.1%) showed implant loosening, so tibiotalocalcaneal arthrodesis was performed. Functional outcomes were also improved after bone grafting in all variables at the latest follow-up (p < 0.05). The mean incorporation rate of the grafts according to the location of the cysts was 84.8% (55.2% to 96.1%) at the medial malleolus, 65.1% (27.6% to 97.1%) at the tibia, and 81.2% (42.8% to 98.7%) at the talus. Smoking was identified as a significant predisposing factor adversely affecting graft incorporation (p = 0.001).
UNASSIGNED: Bone grafting for periprosthetic bone cysts following primary TAA is a reliable procedure with a satisfactory success rate and functional outcomes. Regular follow-up, including CT scan, is important for the detection of cyst re-progression to prevent implant loosening after bone grafting.
摘要：
■本研究的目的是评估全踝关节置换术（TAA）后假体周围骨囊肿植骨的成功率和功能结果。此外,我们使用CT扫描评估了移植物掺入率并确定了相关的诱发因素.
■我们回顾了37例（34例）因假体周围骨囊肿而接受骨移植的脚踝。植骨后一年进行CT扫描，以检查移植物掺入的状态。为了准确分析囊肿体积及其术后变化，使用3D软件处理的3D重建CT扫描。对于功能性结果，测量了诸如踝关节骨性关节炎量表评分和疼痛视觉模拟评分等变量.
■在37个脚踝中，30例移植成功。其余七宗个案中,4例（10.8%）出现囊肿再进展，所以需要二次植骨。二次植骨后，没有进一步的进展，在平均47.5个月（24至120个月）的随访期间，总体成功率为91.9％（37个中的34个）。其余3例(8.1%)为种植体松动,所以进行了胫骨关节固定术。在最新的随访中，骨移植后所有变量的功能结果也得到了改善（p<0.05）。根据囊肿的位置，移植物在内踝的平均掺入率为84.8％（55.2％至96.1％），胫骨占65.1%（27.6%至97.1%），距骨占81.2％（42.8％至98.7％）。吸烟被认为是对移植物掺入产生不利影响的重要诱发因素（p=0.001）。
■原发性TAA后假体周围骨囊肿的植骨是一种可靠的手术，具有令人满意的成功率和功能结局。定期随访,包括CT扫描,对于检测囊肿的再进展以防止植骨后植入物松动很重要。
■我们回顾了37例（34例）因假体周围骨囊肿而接受骨移植的脚踝。植骨后一年进行CT扫描，以检查移植物掺入的状态。为了准确分析囊肿体积及其术后变化，使用3D软件处理的3D重建CT扫描。对于功能性结果，测量了诸如踝关节骨性关节炎量表评分和疼痛视觉模拟评分等变量.
■在37个脚踝中，30例移植成功。其余七宗个案中,4例（10.8%）出现囊肿再进展，所以需要二次植骨。二次植骨后，没有进一步的进展，在平均47.5个月（24至120个月）的随访期间，总体成功率为91.9％（37个中的34个）。其余3例(8.1%)为种植体松动,所以进行了胫骨关节固定术。在最新的随访中，骨移植后所有变量的功能结果也得到了改善（p<0.05）。根据囊肿的位置，移植物在内踝的平均掺入率为84.8％（55.2％至96.1％），胫骨占65.1%（27.6%至97.1%），距骨占81.2％（42.8％至98.7％）。吸烟被认为是对移植物掺入产生不利影响的重要诱发因素（p=0.001）。
■原发性TAA后假体周围骨囊肿的植骨是一种可靠的手术，具有令人满意的成功率和功能结局。定期随访,包括CT扫描,对于检测囊肿的再进展以防止植骨后植入物松动很重要。
