{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,24]],"date-time":"2026-07-24T11:03:34Z","timestamp":1784891014561,"version":"3.55.0"},"reference-count":29,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2026,7,24]],"date-time":"2026-07-24T00:00:00Z","timestamp":1784851200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Pers. Med.","JPM"],"abstract":"<jats:p>Background: Obesity is increasingly prevalent among patients undergoing total hip arthroplasty (THA). While outcomes are well reported, fewer studies assess postoperative BMI trends, digital templating accuracy, and biomechanical restoration. Purpose: To evaluate BMI evolution, templating accuracy, restoration of limb length and femoral offset, and clinical outcomes after primary THA in obese patients, compared with normal-weight controls. Methods: Retrospective comparative cohort including 75 obese patients (BMI \u2265 30 kg\/m2) undergoing primary THA between July 2021 and December 2024. BMI was recorded preoperatively and at last follow-up. OrthoView\u2122 7.1 digital templating guided preoperative planning; accuracy was defined as implanted versus planned component sizes. Radiographic assessment of limb length and femoral offset was performed in 60 obese patients and 60 normal-weight controls. Clinical outcomes included Harris Hip Score (HHS), Oxford Hip Score (OHS), and EQ-5D-5L. Postoperative complications were recorded in the obese cohort. Results: BMI remained stable postoperatively (33.68 \u00b1 2.57 vs. 34.06 \u00b1 2.78 kg\/m2; p = 0.138). Templating accuracy within \u00b11 size was high (femoral stem 80.2%; acetabular cup 94.7%). Limb-length discrepancy was low and comparable between obese and normal-weight patients (3.55 vs. 3.78 mm; p = 0.687). Femoral offset restoration was similarly comparable. Patient-reported outcomes improved significantly in both groups, with no significant differences in postoperative scores. Conclusions: In obese patients, THA provides reliable digital planning accuracy, satisfactory biomechanical reconstruction, and substantial functional improvement comparable to normal-weight patients. BMI remains essentially unchanged after surgery, indicating THA does not substantially influence postoperative weight trajectory in this population.<\/jats:p>","DOI":"10.3390\/jpm16080395","type":"journal-article","created":{"date-parts":[[2026,7,24]],"date-time":"2026-07-24T10:38:41Z","timestamp":1784889521000},"page":"395","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Total Hip Arthroplasty in Patients with BMI \u2265 30 kg\/m2: BMI Evolution, Planning Accuracy, Restoration of Anthropometric Parameters and Clinical Outcomes"],"prefix":"10.3390","volume":"16","author":[{"given":"Costanza","family":"Martorelli","sequence":"first","affiliation":[{"name":"Orthopedic and Traumatology Clinic, IRCCS Policlinico San Matteo Foundation, 27100 Pavia, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alessandra","family":"Monzio Compagnoni","sequence":"additional","affiliation":[{"name":"Orthopedic and Traumatology Clinic, IRCCS Policlinico San Matteo Foundation, 27100 Pavia, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matteo","family":"Massa","sequence":"additional","affiliation":[{"name":"Orthopedic and Traumatology Clinic, IRCCS Policlinico San Matteo Foundation, 27100 Pavia, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1919-5130","authenticated-orcid":false,"given":"Gianluigi","family":"Pasta","sequence":"additional","affiliation":[{"name":"Orthopedic and Traumatology Clinic, IRCCS Policlinico San Matteo Foundation, 27100 Pavia, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0912-5726","authenticated-orcid":false,"given":"Federico Alberto","family":"Grassi","sequence":"additional","affiliation":[{"name":"Orthopedic and Traumatology Clinic, IRCCS Policlinico San Matteo Foundation, 27100 Pavia, Italy"},{"name":"Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michela","family":"Saracco","sequence":"additional","affiliation":[{"name":"Department of Public Health, Orthopedic and Traumatology Clinic, University of Naples \u201cFederico II\u201d, 80131 Naples, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4447-1480","authenticated-orcid":false,"given":"Eugenio","family":"Jannelli","sequence":"additional","affiliation":[{"name":"Orthopedic and Traumatology Clinic, IRCCS Policlinico San Matteo Foundation, 27100 Pavia, Italy"},{"name":"Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,7,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1508","DOI":"10.1016\/S0140-6736(07)60457-7","article-title":"The operation of the century: Total hip replacement","volume":"370","author":"Learmonth","year":"2007","journal-title":"Lancet"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"80","DOI":"10.2174\/1874325001105010080","article-title":"Epidemiology of knee and hip arthroplasty: A systematic review","volume":"5","author":"Singh","year":"2011","journal-title":"Open Orthop. 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