<?xml version="1.0" encoding="utf-8"?>
			<journal>
			<title>The Archives of Bone and Joint Surgery</title>
			<title_fa></title_fa>
			<short_title>ABJS</short_title>
			<subject>Medical Sciences</subject>
			<web_url>https://abjs.mums.ac.ir/</web_url>
			<journal_hbi_system_id>0</journal_hbi_system_id>
			<journal_hbi_system_user></journal_hbi_system_user>
			<journal_id_issn>2345-4644</journal_id_issn>
			<journal_id_issn_online>2345-461X</journal_id_issn_online>
			<journal_id_pii></journal_id_pii>
			<journal_id_doi></journal_id_doi>
			<journal_id_iranmedex></journal_id_iranmedex>
			<journal_id_magiran></journal_id_magiran>
			<journal_id_sid></journal_id_sid>
			<journal_id_nlai></journal_id_nlai>
			<journal_id_science></journal_id_science>
			<language>en</language>
			<pubdate>
				<type>jalali</type>
				<year></year>
				<month></month>
				<day>1</day>
			</pubdate>
			<pubdate>
				<type>gregorian</type>
				<year></year>
				<month></month>
				<day>1</day>
			</pubdate>
			<volume></volume>
			<number></number>
			<publish_type>online</publish_type>
			<publish_edition>1</publish_edition>
			<article_type>fulltext</article_type>
			<articleset><article>
				<language>en</language>
				<article_id_issn></article_id_issn>
				<article_id_issn_online></article_id_issn_online>
				<article_id_pubmed></article_id_pubmed>
				<article_id_pii></article_id_pii>
				<article_id_doi></article_id_doi>
				<article_id_iranmedex></article_id_iranmedex>
				<article_id_magiran></article_id_magiran>
				<article_id_sid></article_id_sid>
				<title_fa></title_fa>
				<title>The Impact of Vitamin D Supplementation on Postoperative Outcomes Following Total Joint Arthroplasty: A Systematic Review</title>
				<subject_fa></subject_fa>
				<subject></subject>
				<content_type_fa></content_type_fa>
				<content_type>SYSTEMATIC REVIEW</content_type>
				<abstract_fa><![CDATA[]]></abstract_fa>
				<abstract><![CDATA[Objectives: This systematic review investigates the impact of vitamin D supplementation on postoperative outcomes following total knee and hip arthroplasty, considering its role in musculoskeletal health and the high prevalence of vitamin D deficiency among arthroplasty patients.
Methods: A comprehensive search of PubMed, Scopus, Embase, and Web of Science was conducted up to April 2026. Eligible studies were randomized clinical trials evaluating vitamin D supplementation in patients undergoing total knee or hip arthroplasty. Two reviewers independently screened studies, extracted data, and assessed quality using the Cochrane RoB-2. A qualitative synthesis was performed because of substantial methodological heterogeneity.
Results: Five randomized controlled trials involving 519 patients were included. Higher-dose and oral regimens produced greater increases in serum 25(OH)D, including higher postoperative concentrations with 2000 vs 800 IU at 24 months (45.5 vs 37.1 ng/mL) and with oral vs intramuscular 600,000 IU at postoperative day 14. However, most studies found no significant between-group differences in functional measures, pain scores, complications, and clinical outcomes. One study showed significantly greater muscle strength in the supplementation group, including hip abductor strength (P = 0.03) and knee extensor strength (P = 0.01). 
Conclusion: Vitamin D supplementation appears to improve perioperative vitamin D status, particularly with higher-dose and oral regimens, but current evidence for consistent benefit on broader postoperative functional and clinical outcomes after joint arthroplasty remains limited and mixed.
Level of Evidence: Level II
Keywords: Vitamin D, total knee arthroplasty, total hip arthroplasty, supplementation]]></abstract>
				<keyword_fa></keyword_fa>
				<keyword>Keywords: Vitamin D, Total knee arthroplasty, Total hip arthroplasty, Supplementation</keyword>
				<start_page>0</start_page>
				<end_page>0</end_page>
				<web_url>https://abjs.mums.ac.ir/article_28024.html</web_url>
			<author_list><author>
				<first_name>Ali</first_name>
				<middle_name></middle_name>
				<last_name>Salmani</last_name>
				<suffix></suffix>
				<first_name_fa></first_name_fa>
				<middle_name_fa></middle_name_fa>
				<last_name_fa></last_name_fa>
				<suffix_fa></suffix_fa>
				<email>alislmne13@gmail.com</email>
				<code>123167</code>
				<coreauthor>No</coreauthor>
				<affiliation>Student Research Committee, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.</affiliation>
				<affiliation_fa></affiliation_fa>
				 </author><author>
				<first_name>Yashar</first_name>
				<middle_name></middle_name>
				<last_name>Khani</last_name>
				<suffix></suffix>
				<first_name_fa></first_name_fa>
				<middle_name_fa></middle_name_fa>
				<last_name_fa></last_name_fa>
				<suffix_fa></suffix_fa>
				<email>yasharkheirolahkhani@gmail.com</email>
				<code>123168</code>
				<coreauthor>No</coreauthor>
				<affiliation>Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran, Iran.</affiliation>
				<affiliation_fa></affiliation_fa>
				 </author><author>
				<first_name>Negarsadat</first_name>
				<middle_name></middle_name>
				<last_name>Namazi</last_name>
				<suffix></suffix>
				<first_name_fa></first_name_fa>
				<middle_name_fa></middle_name_fa>
				<last_name_fa></last_name_fa>
				<suffix_fa></suffix_fa>
				<email>negar.namazi99@gmail.com</email>
				<code>123169</code>
				<coreauthor>No</coreauthor>
				<affiliation>Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran, Iran.</affiliation>
				<affiliation_fa></affiliation_fa>
				 </author><author>
				<first_name>Sadra</first_name>
				<middle_name></middle_name>
				<last_name>Mohebbi</last_name>
				<suffix></suffix>
				<first_name_fa></first_name_fa>
				<middle_name_fa></middle_name_fa>
				<last_name_fa></last_name_fa>
				<suffix_fa></suffix_fa>
				<email>sadramohebbi@gmail.com</email>
				<code>123170</code>
				<coreauthor>No</coreauthor>
				<affiliation>School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.</affiliation>
				<affiliation_fa></affiliation_fa>
				 </author><author>
				<first_name>Negin</first_name>
				<middle_name></middle_name>
				<last_name>Ashoori</last_name>
				<suffix></suffix>
				<first_name_fa></first_name_fa>
				<middle_name_fa></middle_name_fa>
				<last_name_fa></last_name_fa>
				<suffix_fa></suffix_fa>
				<email>dr.neginashoori@gmail.com</email>
				<code>123171</code>
				<coreauthor>No</coreauthor>
				<affiliation>Department of Medicine, Ardabil branch, Islamic Azad University, Ardabil, Iran</affiliation>
				<affiliation_fa></affiliation_fa>
				 </author><author>
				<first_name>Amir</first_name>
				<middle_name></middle_name>
				<last_name>Mehrvar</last_name>
				<suffix></suffix>
				<first_name_fa></first_name_fa>
				<middle_name_fa></middle_name_fa>
				<last_name_fa></last_name_fa>
				<suffix_fa></suffix_fa>
				<email>drmehrvar@sbmu.ac.ir</email>
				<code>123172</code>
				<coreauthor>Yes</coreauthor>
				<affiliation>Associate professor of Department of Orthopedics, Taleghani Hospital Research Development committee, Medical school, Shahid Beheshti University of medical sciences, Tehran, Iran.</affiliation>
				<affiliation_fa></affiliation_fa>
				 </author></author_list>
				</article>
			</articleset>
			</journal>