{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T14:42:45Z","timestamp":1787755365455,"version":"build-2784847793"},"reference-count":36,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JBJS Case Connector"],"abstract":"<jats:sec>\n                    <jats:title>Case:<\/jats:title>\n                    <jats:p>A 51-year-old woman, affected by end-stage renal disease, presented with 16-month-old ruptures of the right patellar tendon and the left quadriceps tendon. Since she had been nonambulatory for more than a year, the authors decided to perform a bilateral one-staged reconstruction with an Achilles tendon allograft on the right side and a full extensor mechanism allograft on the left side, achieving excellent clinical and functional results at 57 months\u2019 follow-up.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions:<\/jats:title>\n                    <jats:p>Bilateral spontaneous rupture of the extensor mechanism of the knee is a rare but dramatic occurrence. Allograft can be considered as a treatment option in case of chronic lesion or delayed reconstruction, with satisfactory midterm outcomes.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.2106\/jbjs.cc.18.00058","type":"journal-article","created":{"date-parts":[[2019,5,27]],"date-time":"2019-05-27T05:01:24Z","timestamp":1558933284000},"page":"e0058-e0058","source":"Crossref","is-referenced-by-count":11,"title":["Bilateral Extensor Mechanism Allograft Reconstruction for Chronic Spontaneous Rupture"],"prefix":"10.2106","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2359-182X","authenticated-orcid":false,"given":"Alfredo","family":"Lamberti","sequence":"first","affiliation":[{"name":"IFCA, Istituto Fiorentino di Cura e Assistenza, Florence, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3117-5818","authenticated-orcid":false,"given":"Francesco","family":"Loconte","sequence":"additional","affiliation":[{"name":"Ospedale di Ostuni, Ostuni, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2183-2191","authenticated-orcid":false,"given":"Antonio","family":"Spinarelli","sequence":"additional","affiliation":[{"name":"Ospedale Policlinico Universit\u00e0 di Bari, Piazza Giulio Cesare, Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6073-8491","authenticated-orcid":false,"given":"Andrea","family":"Baldini","sequence":"additional","affiliation":[{"name":"IFCA, Istituto Fiorentino di Cura e Assistenza, Florence, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2019,4]]},"reference":[{"issue":"suppl 1","key":"bib1-20230712","first-page":"175","article-title":"Extensor mechanism allograft reconstruction after total knee arthroplasty","volume":"87","author":"Burnett","year":"2005","journal-title":"J Bone Joint Surg Am."},{"issue":"5","key":"bib2-20230712","doi-asserted-by":"crossref","first-page":"e443","DOI":"10.3928\/01477447-20150504-92","article-title":"Bilateral extensor mechanism disruption after total knee arthroplasty in two morbidly obese patients","volume":"38","author":"Goldstein","year":"2015","journal-title":"Orthopedics."},{"issue":"4","key":"bib3-20230712","doi-asserted-by":"crossref","first-page":"486","DOI":"10.1097\/00007611-198504000-00033","article-title":"Bilateral simultaneous spontaneous rupture of quadriceps tendons in a diabetic patient","volume":"78","author":"Bhole","year":"1985","journal-title":"South Med J."},{"issue":"12","key":"bib4-20230712","doi-asserted-by":"crossref","first-page":"1177","DOI":"10.3928\/0147-7447-19991201-12","article-title":"Spontaneous bilateral patellar tendon rupture in primary hyperparathyroidism","volume":"22","author":"Chen","year":"1999","journal-title":"Orthopedics."},{"issue":"6","key":"bib5-20230712","doi-asserted-by":"crossref","first-page":"592","DOI":"10.1136\/ard.39.6.592","article-title":"Insidious bilateral infrapatellar tendon rupture in a patient with systemic lupus erythematosus","volume":"39","author":"Cooney","year":"1980","journal-title":"Ann Rheum Dis."},{"issue":"1","key":"bib6-20230712","first-page":"262","article-title":"Image interpretation session: 1999. Bilateral quadriceps tendon rupture and multiple brown tumors in a patient with secondary hyperparathyroidism","volume":"20","author":"Dunnick","year":"2000","journal-title":"Radiographics."},{"issue":"4","key":"bib7-20230712","doi-asserted-by":"crossref","first-page":"1378","DOI":"10.1177\/0300060513490616","article-title":"Simultaneous bilateral quadriceps tendon rupture in a patient with hyperparathyroidism undergoing long-term haemodialysis: a case report and literature review","volume":"41","author":"Gao","year":"2013","journal-title":"J Int Med Res."},{"issue":"9","key":"bib8-20230712","doi-asserted-by":"crossref","first-page":"1988","DOI":"10.1093\/ndt\/12.9.1988","article-title":"Nontraumatic bilateral rupture of patellar tendons in a diabetic dialysis patient with secondary hyperparathyroidism","volume":"12","author":"Kalantar-Zadeh","year":"1997","journal-title":"Nephrol Dial Transpl."},{"issue":"5","key":"bib9-20230712","first-page":"393","article-title":"Bilateral quadriceps tendon rupture and coexistent femoral neck fracture in a patient with chronic renal failure [in Turkish]","volume":"41","author":"Kazimoglu","year":"2007","journal-title":"Acta Orthop Traumatol Turc."},{"issue":"1","key":"bib10-20230712","doi-asserted-by":"crossref","first-page":"55","DOI":"10.1007\/s00167-005-0626-9","article-title":"Spontaneous and simultaneous rupture of both quadriceps tendons in a patient with chronic renal failure. A case studied by MRI both preoperatively and postoperatively","volume":"14","author":"Kim","year":"2006","journal-title":"Knee Surg Sports Traumatol Arthrosc."},{"issue":"4","key":"bib11-20230712","doi-asserted-by":"crossref","first-page":"244","DOI":"10.5792\/ksrr.2011.23.4.244","article-title":"Simultaneous bilateral quadriceps tendon rupture in patient with chronic renal failure","volume":"23","author":"Lee","year":"2011","journal-title":"Knee Surg Relat Res."},{"issue":"2","key":"bib12-20230712","doi-asserted-by":"crossref","first-page":"347","DOI":"10.1136\/ard.43.2.347","article-title":"Multiple tendon rupture in systemic lupus erythematosus: case report and review of the literature","volume":"43","author":"Potasman","year":"1984","journal-title":"Ann Rheum Dis."},{"key":"bib13-20230712","doi-asserted-by":"crossref","first-page":"968","DOI":"10.1056\/NEJM196205102661903","article-title":"Hyperparathyroidism with avulsion of three major tendons: report of a case","volume":"266","author":"Preston","year":"1962","journal-title":"N Engl J Med."},{"issue":"5-6","key":"bib14-20230712","first-page":"228","article-title":"Bilateral, spontaneous and simultaneous rupture of the quadriceps tendon in chronic renal failure and secondary hyperparathyroidism: report of five cases","volume":"39","author":"Provelegios","year":"1991","journal-title":"Arch Anat Cytol Pathol."},{"key":"bib15-20230712","doi-asserted-by":"crossref","first-page":"331","DOI":"10.1186\/1752-1947-5-331","article-title":"Bilateral simultaneous rupture of the quadriceps tendon in a patient with psoriasis: a case report and review of the literature","volume":"5","author":"Senevirathna","year":"2011","journal-title":"J Med Case Rep."},{"issue":"2","key":"bib16-20230712","doi-asserted-by":"crossref","first-page":"118","DOI":"10.5414\/CNP58118","article-title":"Simultaneous bilateral quadriceps tendon rupture in renal patients","volume":"58","author":"Shah","year":"2002","journal-title":"Clin Nephrol."},{"issue":"6","key":"bib17-20230712","doi-asserted-by":"crossref","first-page":"1033","DOI":"10.1002\/art.1780170616","article-title":"Tendon ruptures in patients with systemic lupus erythematosus treated with corticosteroids","volume":"17","author":"Morgan","year":"1974","journal-title":"Arthritis Rheum."},{"issue":"4","key":"bib18-20230712","doi-asserted-by":"crossref","first-page":"300","DOI":"10.1136\/emj.12.4.300","article-title":"Bilateral patellar tendon rupture secondary to repeated local steroid injections","volume":"12","author":"Clark","year":"1995","journal-title":"J Accid Emerg Med."},{"issue":"4","key":"bib19-20230712","doi-asserted-by":"crossref","first-page":"e85","DOI":"10.1016\/j.jemermed.2016.05.063","article-title":"Bilateral quadriceps femoris tendon rupture in a patient with chronic renal insufficiency: a case report","volume":"51","author":"Lim","year":"2016","journal-title":"J Emerg Med."},{"issue":"1","key":"bib20-20230712","doi-asserted-by":"crossref","first-page":"32","DOI":"10.1097\/01.rhu.0000200421.43348.05","article-title":"Bilateral simultaneous rupture of the quadriceps tendon in an adult amateur tennis player","volume":"12","author":"Katz","year":"2006","journal-title":"J Clin Rheumatol."},{"issue":"11","key":"bib21-20230712","doi-asserted-by":"crossref","first-page":"1045","DOI":"10.1097\/00005373-198611000-00015","article-title":"Bilateral rupture of the patella tendon in an otherwise healthy male patient following minor trauma","volume":"26","author":"Webb","year":"1986","journal-title":"J Trauma."},{"issue":"3","key":"bib22-20230712","first-page":"254","article-title":"Spontaneous rupture of the quadriceps tendon and patellar ligament during treatment for chronic renal failure","volume":"129","author":"Loehr","year":"1983","journal-title":"Can Med Assoc J."},{"issue":"2","key":"bib23-20230712","doi-asserted-by":"crossref","first-page":"227","DOI":"10.1007\/s00776-004-0868-2","article-title":"Simultaneous rupture of the quadriceps tendon and contralateral patellar tendon in a patient with chronic renal failure","volume":"10","author":"Muratli","year":"2005","journal-title":"J Orthop Sci."},{"issue":"8","key":"bib24-20230712","doi-asserted-by":"crossref","first-page":"860","DOI":"10.1097\/00007611-200295080-00016","article-title":"Simultaneous bilateral rupture of quadriceps tendons: analysis of risk factors and associations","volume":"95","author":"Shah","year":"2002","journal-title":"South Med J."},{"issue":"2","key":"bib25-20230712","doi-asserted-by":"crossref","first-page":"98","DOI":"10.1053\/j.ackd.2011.01.001","article-title":"The roles of the skeleton and phosphorus in the CKD mineral bone disorder","volume":"18","author":"Hruska","year":"2011","journal-title":"Adv Chronic Kidney Dis."},{"issue":"2","key":"bib26-20230712","doi-asserted-by":"crossref","first-page":"201","DOI":"10.5935\/0101-2800.20140031","article-title":"Mineral and bone disorder and vascular calcification in patients with chronic kidney disease","volume":"36","author":"Peres","year":"2014","journal-title":"J Bras Nefrol."},{"key":"bib27-20230712","doi-asserted-by":"crossref","first-page":"55","DOI":"10.11604\/pamj.2014.18.55.2664","article-title":"Neglected rupture of the quadriceps tendon in a patient with chronic renal failure (case report and review of the literature)","volume":"18","author":"Hassani","year":"2014","journal-title":"Pan Afr Med J."},{"issue":"6","key":"bib28-20230712","doi-asserted-by":"crossref","first-page":"597","DOI":"10.2340\/00015555-0518","article-title":"Nephrogenic systemic fibrosis with multiple calcification and osseous metaplasia","volume":"88","author":"Nagai","year":"2008","journal-title":"Acta Derm Venereol."},{"issue":"5","key":"bib29-20230712","doi-asserted-by":"crossref","first-page":"1429","DOI":"10.1007\/s00167-016-4370-0","article-title":"Surgical options for chronic patellar tendon rupture in total knee arthroplasty","volume":"26","author":"Lamberti","year":"2018","journal-title":"Knee Surg Sports Traumatol Arthrosc."},{"issue":"3","key":"bib30-20230712","doi-asserted-by":"crossref","first-page":"147","DOI":"10.1007\/s10561-006-0003-z","article-title":"Bacterial infection transmitted by human tissue allograft transplantation","volume":"7","author":"Eastlund","year":"2006","journal-title":"Cell Tissue Bank."},{"key":"bib31-20230712","first-page":"569363","article-title":"Spontaneous rupture of the patellar tendon and the contralateral quadriceps tendon, associated with lupus erythematosus: analysis of the literature","volume":"2011","author":"Karadimas","year":"2011","journal-title":"Case Rep Orthop."},{"key":"bib32-20230712","doi-asserted-by":"crossref","first-page":"bcr0620103057","DOI":"10.1136\/bcr.06.2010.3057","article-title":"Simultaneous traumatic rupture of the patellar tendon and the contralateral quadriceps tendon in a healthy individual","volume":"2010","author":"Kumar","year":"2010","journal-title":"BMJ Case Rep."},{"issue":"3","key":"bib33-20230712","doi-asserted-by":"crossref","first-page":"59","DOI":"10.1007\/s10195-008-0002-x","article-title":"Simultaneous chronic rupture of quadriceps tendon and contra-lateral patellar tendon in a patient affected by tertiary hyperparatiroidism","volume":"9","author":"Grecomoro","year":"2008","journal-title":"J Orthop Traumatol."},{"issue":"11","key":"bib34-20230712","doi-asserted-by":"crossref","first-page":"941","DOI":"10.1016\/S0929-6646(09)60180-7","article-title":"Spontaneous rupture of the patellar and contralateral quadriceps tendons associated with secondary hyperparathyroidism in a patient receiving long-term dialysis","volume":"105","author":"Chen","year":"2006","journal-title":"J Formos Med Assoc."},{"issue":"6","key":"bib35-20230712","doi-asserted-by":"crossref","first-page":"603","DOI":"10.3928\/0147-7447-20050601-18","article-title":"Spontaneous and simultaneous quadriceps and patella tendon rupture in a patient on chronic hemodialysis","volume":"28","author":"Rysavy","year":"2005","journal-title":"Orthopedics."},{"issue":"2","key":"bib36-20230712","doi-asserted-by":"crossref","first-page":"177","DOI":"10.1136\/bjsm.30.2.177","article-title":"Simultaneous rupture of the quadriceps tendon with contralateral rupture of the patellar tendon in an otherwise healthy athlete","volume":"30","author":"Munshi","year":"1996","journal-title":"Br J Sports Med."}],"container-title":["JBJS Case Connector"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.ovid.com\/01709767-201906000-00012","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T13:41:55Z","timestamp":1787751715000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ovid.com\/01709767-201906000-00012"}},"subtitle":["A Case Report and Review of the Literature"],"short-title":[],"issued":{"date-parts":[[2019,4]]},"references-count":36,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2019]]}},"URL":"https:\/\/doi.org\/10.2106\/jbjs.cc.18.00058","relation":{},"ISSN":["2160-3251"],"issn-type":[{"value":"2160-3251","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,4]]}}}