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This study aimed to explore the efficacy of core decompression combined with intra-articular decompression (debridement of the hip joint and incision of the hip capsule) under hip arthroscopic guidance in patients with pre-collapse ONFH.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>The clinical data of 101 patients with pre-collapse ONFH were analysed retrospectively. Sixty patients (80 hips) received small-diameter multi-channel core decompression alone in first half review period (group B). Forty-one patients (59 hips) were treated with small-diameter multi-channel core decompression combined with intra-articular decompression under hip arthroscopy guidance in second half review period (group A). The surgical duration; intraoperative bleeding; intra-articular pressure(IAP) before and after surgery; length of hospital stay; hospitalisation expenses; visual analogue scale (VAS) score before, 1\u00a0week, 4\u00a0weeks, 3\u00a0months and 1\u00a0year after surgery; and Harris score of the hip joint before, 3\u00a0months and 1\u00a0year after surgery were recorded and compared between group A and group B. X-ray examination was performed every month to observe the collapse of the femoral head within 2\u00a0years after surgery, which was compared using the Kaplan\u2013Meier survival curve analysis.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>When the two groups were compared, the surgical duration was longer and hospitalisation expenses were higher in group A than in group B (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05). However, the VAS score and the Harris score of the hip joint after surgery improved significantly compared with those before surgery (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05), which were more apparent in group A than in group B (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05). X-ray examination revealed that 6 hips in group A and 22 in group B received femoral head collapse at the 2-year follow-up. The survival rate of the femoral head in group A was significantly higher than that in group B (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>Small-diameter multi-channel core decompression combined with intra-articular decompression (debridement of the hip joint and incision of the hip capsule) under hip arthroscopic guidance for treating early ONFH can more effectively alleviate joint pain, improve joint function and delay ONFH progression.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s13018-022-03477-8","type":"journal-article","created":{"date-parts":[[2023,1,2]],"date-time":"2023-01-02T14:03:50Z","timestamp":1672668230000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Intramedullary core decompression combined with endoscopic intracapsular decompression and debridement for pre-collapse non-traumatic osteonecrosis of the femoral head"],"prefix":"10.1186","volume":"18","author":[{"given":"Yan","family":"Zhao","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guangyang","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qichun","family":"Song","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lihong","family":"Fan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhibin","family":"Shi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2023,1,2]]},"reference":[{"issue":"12","key":"3477_CR1","doi-asserted-by":"publisher","first-page":"7348","DOI":"10.3390\/ijerph19127348","volume":"19","author":"W Konarski","year":"2022","unstructured":"Konarski W, Pobo\u017cy T, \u015aliwczy\u0144ski A, Kotela I, Krakowiak J, Hordowicz M, Kotela A. 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