The Fate of Bone Marrow Lesions After Open Wedge High Tibial Osteotomy: A Comparison Between Knees With Primary Osteoarthritis and Subchondral Insufficiency Fractures

2021 ◽  
pp. 036354652110021
Author(s):  
Han Gyeol Choi ◽  
Joo Sung Kim ◽  
Hyun Jin Yoo ◽  
You Sun Jung ◽  
Yong Seuk Lee

Background: Subchondral insufficiency fracture of the knee (SIFK) is characterized by a subchondral lesion that may lead to end-stage osteoarthritis (OA). In patients who have SIFK in a precollapse state with varus malalignment, a joint-preserving technique such as open wedge high tibial osteotomy (OWHTO) should be considered. Purpose: To evaluate the efficacy of OWHTO in primary OA and SIFK-dominant OA by clinical and radiological evaluations including magnetic resonance imaging (MRI). Study Design: Cohort study; Level of evidence 3. Methods: A total of 33 SIFK-dominant OA knees and 66 with primary OA that underwent biplanar OWHTO between March 2014 and February 2016 were included after 1:2 propensity score matching. The MRI Osteoarthritis Knee Score was used to assess bone marrow lesions (BMLs) preoperatively and at follow-up. The weightbearing line ratio, the hip-knee-ankle angle, and the joint line convergence angle were measured. The clinical outcomes assessed were range of motion, the American Knee Society Score, and the Western Ontario and McMaster University (WOMAC) score. Results: The mean follow-up period was 41.2 ± 12.6 months. The distribution of preoperative BML grade in the SIFK-dominant OA group was significantly higher in both the femur and tibia ( P < .001 and <.001, respectively) than that in the primary OA group. However, the difference was not significant postoperatively (femur, P = .425; tibia, P = .462). In both groups, postoperative BMLs showed significant improvement compared with preoperative BMLs (primary OA [femur, P < .001; tibia, P = .001] and SIFK-dominant OA [femur, P < .001; tibia, P < .001]). The WOMAC pain score was higher in the SIFK-dominant OA group preoperatively (primary OA, 7.0 ± 3.73; SIFK-dominant OA, 9.17 ± 2.6; P = .032) even though it was not different at the final follow-up (primary OA, 2.11 ± 1.7; SIFK-dominant OA, 1.79 ± 1.32; P = .179). Conclusion: OWHTO is an effective procedure not only for primary OA but also for SIFK-dominant OA. OWHTO can improve BMLs, which represent the main pathological feature of SIFK. Therefore, in patients who have SIFK with varus malalignment, OWHTO can be an attractive treatment option for preserving the joint and enhancing subchondral bone healing.

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Bo Zhu ◽  
Tong-Fu Wang ◽  
De-Sheng Chen ◽  
Jia-Wang Zhu ◽  
Zeng-Liang Wang ◽  
...  

The purpose of the study was to investigate the relationship between postoperative bone marrow lesions (BMLs) and pain severity in patients undergoing open wedge high tibial osteotomy (OWHTO). We reviewed the patients undergoing OWHTO between April 2018 and April 2020. The demographic and clinical data of patients were collected. Clinically, VAS and Knee injury and Osteoarthritis Outcome Score (KOOS) were used to assess pain level and functional outcomes of patients. The MRI Osteoarthritis Knee Score (MOAKS) was used to assess the total BMLs size in medial tibiofemoral (MTF), lateral tibiofemoral (LTF), and patellofemoral (PF) joints. 98 patients were enrolled in the study, including 57 male and 41 female patients. The VAS scores improved significantly from 6.1 ± 0.8 to 1.5 ± 0.9 ( p < 0.001 ), and all subscales of KOOS improved significantly after surgery ( p < 0.001 ). There were no significant differences between the pre- and postoperative total BML size of PF and LTF joints ( p > 0.05 ). We observed significant improvements in the total BML size of MTF joint ( p < 0.001 ). The VAS scores and KOOS pain scores improved better in patients without postoperative MTF joint BMLs ( p < 0.001 ). Postoperative MTF joint BMLs were correlated with postoperative VAS ( p < 0.001 ) and KOOS pain ( p < 0.001 ). Our study demonstrates that MTF joint BMLs improved significantly after OWTHO. We confirmed that the presence of postoperative MTF joint BMLs are strongly associated with pain severity. The greater the improvement in postoperative MTF joint BMLs, the less pain. Our findings provide valuable understandings of OWHTO in the treatment of knee osteoarthritis (KOA) and potential future directions for KOA treatment approaches.


2021 ◽  
Author(s):  
Bo Zhu ◽  
Tong-Fu Wang ◽  
Jia-Wang Zhu ◽  
Zeng-Liang Wang ◽  
Jian-Gang Cao ◽  
...  

Abstract Background: The purpose of the study was to investigate the relationship between postoperative bone marrow lesions (BMLs) and pain severity in patients undergoing open wedge high tibial osteotomy (OWHTO). Methods: We retrospectively reviewed the patients undergoing OWHTO between April 2018 and April 2020. The demographic and clinical data of patients were collected. Clinically, VAS and Knee injury and Osteoarthritis Outcome Score (KOOS) were used to assess pain level and functional outcomes of patients. Histologically, The MRI Osteoarthritis Knee Score (MOAKS) was used to assess semi-quantitatively the total BMLs size in medial tibiofemoral (MTF), lateral tibiofemoral (LTF), and patellofemoral (PF) joints. Results: 98 patients were enrolled in the study, including 57 male and 41 female patients. The VAS scores improved significantly from 6.1 ± 0.8 to 1.5 ± 0.9 (p < 0.001), and all subscales of KOOS improved significantly after surgery (p < 0.001). There were no significant difference between the pre-and postoperative total BMLs size in PF and LTF joints (p > 0.05). We observed significant improvements in the total BMLs size of MTF joint (p < 0.001). All patients had preoperative MTF joint BMLs, in contrast, 13 patients had no postoperative MTF joint BMLs. The independent sample t-test showed that the VAS scores and KOOS pain scores improved better in patients without postoperative MTF joint BMLs (p < 0.001). Pearson correlations showed that postoperative MTF joint BMLs were correlated with postoperative VAS (p < 0.001) and KOOS pain (p < 0.001). Conclusion: Our study demonstrates that MTF joint BMLs improved significantly after OWTHO. We confirmed that the presence of postoperative MTF joint BMLs are strongly associated with pain severity, the greater the improvement in postoperative MTF joint BMLs, the less pain. Our findings provide valuable understandings of OWHTO in the treatment of Knee osteoarthritis (KOA), and potential future directions for KOA treatment approaches.


2020 ◽  
Vol 8 (9_suppl7) ◽  
pp. 2325967120S0054
Author(s):  
Yu Sha ◽  
Lei Yan

Objectives: The purpose of this study is to evaluate the clinical efficacy of open-wedge high tibial osteotomy (HTO) in treatment of kellgren- lawrence IV anterior medial knee osteoarthritis with varus tibia. Methods: Between 2016 and 2018, 56 patients with kellgren -lawrence IV knee osteoarthritis associated with varus tibial deformity who underwent a medial open-wedge high tibial osteotomy at a tertiary hospital were prospectively followed up. The surgical effect and postoperative complications were observed and analyzed. Meanwhile, the hospital for special surgery (HSS) scores of knee function before operation and at the last follow-up after operation was compared. Results: The median follow up was 19.8 months (range, 18 to 24 months). At the last follow-up, there was 40 excellent cases, 14 good cases, 2 fair case and 0 poor case. There were no complications such as vascular and nerve injury, internal fixation fracture and infection. The HSS score of knee function (89.6±3.9) at the last follow-up after operation was higher than (63.2±6.4) points before operation, and the difference was statistically significant ( P <0.05). Conclusion: Medial opening high tibial osteotomy shows remarkable therapeutic effect for patients with knee osteoarthritis associated with varus tibial deformity, and it can effectively relief the pain of knee joint with less postoperative complications.


2016 ◽  
Vol 29 (08) ◽  
pp. 664-672 ◽  
Author(s):  
Thomas Lind-Hansen ◽  
Martin Lind ◽  
Poul Nielsen ◽  
Mogens Laursen

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Shugo Maeda ◽  
Daisuke Chiba ◽  
Eiji Sasaki ◽  
Tetsushi Oyama ◽  
Tomoyuki Sasaki ◽  
...  

Abstract Purpose This study aimed to investigate the rate at which patients returned to sports after open wedge high tibial osteotomy and identify the continuity of sports activity post-operatively. Methods Thirty-five patients (40 knees) who underwent open-wedge high tibial osteotomy (OW-HTO) in medial knee osteoarthritis were included in this study. The mean age of the patients who underwent surgery was 55.1 ± 10.7 years, and the mean follow-up period was 41.0 ± 24.7 months. Clinical results and radiographic parameters calculated in standing whole-leg radiographs preoperatively, post-operatively, and at the final follow-up were evaluated. Results Thirty-one patients (88.6%) were able to return to preoperative sports activity; however, only 14 patients (40.0%) completely returned to preoperative sports activity levels. Of the 31 patients who returned to sports activity, 10 patients (32.3%) maintained post-operative sporting activity levels at the final follow-up. In radiographic parameters, the weight-bearing line ratio was considered loss of correction in the post-operative period leading to the final follow-up. Patients who completely returned to sports and maintained sporting activity levels at the final follow-up had significantly higher the Knee Injury and Osteoarthritis Outcome Score pain subscale values and lower visual analogue scale of knee pain at pre-surgery and final follow-up than other patients, including those who partially returned to sports. Conclusions The proportion of patients who returned to sports after OW-HTO and were able to participate in competitions at the same activity level as before surgery was low and insufficient. Level of evidence Retrospective case series, IV


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