Posterior Dislocation of the Hinge-Post Extension in a Rotating Hinge Total Knee Prosthesis
The rotating hinge knee prosthesis is a popular intervention in patients lacking stability with highly constrained total knee arthroplasty. Despite improvements in design, nonmechanical and mechanical complications continue to be a problem. Dislocation of the hinge has been widely described, mainly...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Case Reports in Orthopedics |
| Online Access: | http://dx.doi.org/10.1155/2013/756538 |
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| _version_ | 1832548416939360256 |
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| author | Givenchy Manzano Ran Schwarzkopf |
| author_facet | Givenchy Manzano Ran Schwarzkopf |
| author_sort | Givenchy Manzano |
| collection | DOAJ |
| description | The rotating hinge knee prosthesis is a popular intervention in patients lacking stability with highly constrained total knee arthroplasty. Despite improvements in design, nonmechanical and mechanical complications continue to be a problem. Dislocation of the hinge has been widely described, mainly due to the component fracture. Few reports describe isolated dislocation of the rotating stem. We report a case of isolated disengagement of the rotating hinge mechanism, due to severe flexion gap imbalance, leading to subsequent posterior dislocation of the hinge and anterior knee dislocation, in a patient with a history of multiple total knee arthroplasty revisions. This case suggests the importance of the soft tissue balancing, the adequate patellar tracking, and use of a long cylindrical, minimally tapered rotating stem in hinge arthroplasty to minimize hinge dislocation. |
| format | Article |
| id | doaj-art-a357b62c190b4ff882db1fabb1d14c3e |
| institution | Kabale University |
| issn | 2090-6749 2090-6757 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Case Reports in Orthopedics |
| spelling | doaj-art-a357b62c190b4ff882db1fabb1d14c3e2025-02-03T06:14:13ZengWileyCase Reports in Orthopedics2090-67492090-67572013-01-01201310.1155/2013/756538756538Posterior Dislocation of the Hinge-Post Extension in a Rotating Hinge Total Knee ProsthesisGivenchy Manzano0Ran Schwarzkopf1Department of Orthopaedic Surgery, Joint Replacement Service, University of California Irvine Medical Center, 101 The City Drive South, Pavilion III, Building 29, Orange, CA 92868, USADepartment of Orthopaedic Surgery, Joint Replacement Service, University of California Irvine Medical Center, 101 The City Drive South, Pavilion III, Building 29, Orange, CA 92868, USAThe rotating hinge knee prosthesis is a popular intervention in patients lacking stability with highly constrained total knee arthroplasty. Despite improvements in design, nonmechanical and mechanical complications continue to be a problem. Dislocation of the hinge has been widely described, mainly due to the component fracture. Few reports describe isolated dislocation of the rotating stem. We report a case of isolated disengagement of the rotating hinge mechanism, due to severe flexion gap imbalance, leading to subsequent posterior dislocation of the hinge and anterior knee dislocation, in a patient with a history of multiple total knee arthroplasty revisions. This case suggests the importance of the soft tissue balancing, the adequate patellar tracking, and use of a long cylindrical, minimally tapered rotating stem in hinge arthroplasty to minimize hinge dislocation.http://dx.doi.org/10.1155/2013/756538 |
| spellingShingle | Givenchy Manzano Ran Schwarzkopf Posterior Dislocation of the Hinge-Post Extension in a Rotating Hinge Total Knee Prosthesis Case Reports in Orthopedics |
| title | Posterior Dislocation of the Hinge-Post Extension in a Rotating Hinge Total Knee Prosthesis |
| title_full | Posterior Dislocation of the Hinge-Post Extension in a Rotating Hinge Total Knee Prosthesis |
| title_fullStr | Posterior Dislocation of the Hinge-Post Extension in a Rotating Hinge Total Knee Prosthesis |
| title_full_unstemmed | Posterior Dislocation of the Hinge-Post Extension in a Rotating Hinge Total Knee Prosthesis |
| title_short | Posterior Dislocation of the Hinge-Post Extension in a Rotating Hinge Total Knee Prosthesis |
| title_sort | posterior dislocation of the hinge post extension in a rotating hinge total knee prosthesis |
| url | http://dx.doi.org/10.1155/2013/756538 |
| work_keys_str_mv | AT givenchymanzano posteriordislocationofthehingepostextensioninarotatinghingetotalkneeprosthesis AT ranschwarzkopf posteriordislocationofthehingepostextensioninarotatinghingetotalkneeprosthesis |