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Wang D, Xiong D, Zhang J, Zhang W, Wang S, Tian X, Jia Z, Li H, Xu C, Li J. Finite element analysis of a customized coronoid prosthesis for traumatic coronoid deficiency. J Shoulder Elbow Surg 2024; 33:e248-e260. [PMID: 38182026 DOI: 10.1016/j.jse.2023.11.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 11/02/2023] [Accepted: 11/14/2023] [Indexed: 01/07/2024]
Abstract
BACKGROUND Traumatic coronoid deficiency with persistent elbow instability is a challenging condition. Autologous bone graft reconstruction is often associated with a range of additional clinical problems and the outcome is often unpredictable. The purpose of this study was to design a prosthetic device that can reconstruct coronoid deficiency of any height and to evaluate its mechanical properties using finite element analysis. MATERIALS AND METHODS A customized coronoid prosthesis was designed based on image registration, automatic measurement, and computer-aided design. After pilot study and sample size calculation, image data collected from 6 patients who underwent bilateral complete upper extremity CT scans were reconstructed. The test was divided into 3 groups: coronoid intact, prosthesis and autograft. Regan-Morrey type II and autologous olecranon osteotomy models were established. The prosthesis and autogenous olecranon were assembled to the coronoid base. Stress was applied axially along the proximal humeral diaphysis and implant micromotion and contact mechanics of the humeroulnar joint were measured at 30°, 45°, 60° and 90° of joint flexion respectively. RESULTS At all flexion angles, the maximum stress on the coronoid articular surface was significantly reduced in the prosthesis and autograft groups, with the reduction being more significant in the latter (P < .001). With increasing flexion, the maximum stress at the coronoid articular surface increased significantly after autograft reconstruction (7.2 to 68 MPa, P < .001), whereas the humeroulnar joint obtained a similar contact mechanics pattern to that of the control group after prosthetic reconstruction. As the flexion angle increased, the relative micromotion of both the prosthesis and autograft increased significantly (0.5-1.6 vs. 0.2-1.2, Pmeasure time < 0.001, Pgroups < 0.001). Contact pressure and center-of-force paths of the humeroulnar joint experience abrupt stress changes at approximately 60° of flexion. CONCLUSION The contact stress pattern in the humeroulnar joint is similar in prosthesis and intact coronoid groups. Autograft reconstruction increases contact stresses at the articular surface and alters the joint center-of-force path. The "stress surge phenomenon" in the humeroulnar joint surface before and after 60° of flexion may be one of the mechanisms of traumatic elbow degeneration.
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Affiliation(s)
- Daofeng Wang
- Department of Orthopedics, The Fourth Medical Center of Chinese PLA General Hospital, Beijing, China; National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China; Sports Medicine Service, Beijing Jishuitan Hospital, Capital Medical University, Beijing, China
| | - Dou Xiong
- Department of Orthopedics, The Fourth Medical Center of Chinese PLA General Hospital, Beijing, China; National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
| | - Jiabing Zhang
- Graduate School of Medical School of Chinese PLA Hospital Beijing, China; Xidian University, Xi'an, China
| | - Wupeng Zhang
- Department of Orthopedics, The Fourth Medical Center of Chinese PLA General Hospital, Beijing, China; National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
| | | | | | - Zhengfeng Jia
- Department of Orthopedics, The Fourth Medical Center of Chinese PLA General Hospital, Beijing, China; National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
| | - Huanyu Li
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning, China.
| | - Cheng Xu
- Department of Orthopedics, The Fourth Medical Center of Chinese PLA General Hospital, Beijing, China; National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China.
| | - Jiantao Li
- Department of Orthopedics, The Fourth Medical Center of Chinese PLA General Hospital, Beijing, China; National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China.
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Jiang Y, Qi L, Peng C, Li Q, Zhang P, Wang Y, Wu D. Reconstruction of the coronoid process with the olecranon tip for chronic elbow dislocation in children: A rare case report and literature review. Front Pediatr 2022; 10:977866. [PMID: 36507138 PMCID: PMC9730028 DOI: 10.3389/fped.2022.977866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 10/31/2022] [Indexed: 11/25/2022] Open
Abstract
The coronoid process of the ulna, as a key part of the elbow joint, plays an important role in maintaining elbow joint stability. Reconstruction of the coronoid process is necessary in both acute and chronic coronoid defects to restore elbow stability and avoid early joint degeneration. The olecranon tip may be a useful autologous osteochondral graft for reconstructing the same shape of the ulna coronoid process. The purpose of this report was to verify if reconstruction of the coronoid process with the olecranon tip can restore elbow stability and kinematics. Here, we report a 13-year-old boy who had undergone Kirschner-wire fixation for a left supracondylar fracture of the left humerus 9 years previously. After that, the right elbow dislocation and varus deformity gradually appeared. Imaging revealed posterolateral dislocation of the left elbow due to the absence of the coronoid process of the ulna. We reconstructed the ulnar coronoid process by intercepting the ipsilateral olecranon tip. After 22 months of follow-up, the range of motion of the left elbow joint was normal, and the cubitus varus deformity disappeared. The results of this report suggest that olecranon tip autografts are suitable to replace transverse coronoid defects. Given the patient's satisfactory clinical results, this reconstruction technique is safe and effective for the treatment of chronic elbow instability due to coronoid process defects of the ulna.
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Affiliation(s)
- Yikun Jiang
- Department of Orthopedics, The Second Hospital of Jilin University, Changchun, China
| | - Le Qi
- Department of Orthopedics, The Second Hospital of Jilin University, Changchun, China
| | - Chuangang Peng
- Department of Orthopedics, The Second Hospital of Jilin University, Changchun, China
| | - Qiwei Li
- Department of Pediatric Orthopaedics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Peng Zhang
- Department of Radiology, The Second Hospital of Jilin University, Changchun, China
| | - Yanbing Wang
- Department of Orthopedics, The Second Hospital of Jilin University, Changchun, China
| | - Dankai Wu
- Department of Orthopedics, The Second Hospital of Jilin University, Changchun, China
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Walch A, Garcia-Maya B, Knowles NK, Athwal GS, King GJW. Computed tomography analysis of the relationship between the coronoid and the radial head. J Shoulder Elbow Surg 2021; 30:2824-2831. [PMID: 34216785 DOI: 10.1016/j.jse.2021.05.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 05/17/2021] [Accepted: 05/23/2021] [Indexed: 02/01/2023]
Abstract
BACKGROUND The coronoid process is an important stabilizer of the elbow, and its anatomy has been extensively studied. However, data documenting the relationship of the coronoid relative to the radial head (RH) are limited. The latter is a good landmark for the surgeon when débriding or reconstructing the coronoid. This imaging-based study quantified the anatomic relationship between the coronoid and the proximal radius and ulna. METHODS We investigated 80 cadaveric upper extremities (18 paired elbows) by 3-dimensional digital analysis of computed tomography data. After construction of a standardized coordinate system, the relationships between the coronoid, the anterior-most point of the RH, the deepest point of the articular surface of the RH, the top of the lesser sigmoid notch, and the deepest point of the guiding ridge of the trochlear notch were analyzed. RESULTS The mean height of the tip of the coronoid was 36 ± 4 mm (range, 26-43 mm). The mean height of the anterior-most point of the RH was 40 ± 4 mm (range, 28-47 mm). The mean distance between the tip of the coronoid and the anterior-most point of the RH was 4.5 ± 1 mm (range, 2-10 mm). For paired elbows, the heights of the tip of the coronoid and the anterior-most point of the RH were similar between sides. CONCLUSION This study described the relationship between the coronoid and RH. This information should prove useful when reconstructing a coronoid from a medial approach in the case of an intact RH. The difference in radiographic height between the tip of the coronoid and anterior RH in the normal elbow averages 5 mm. However, when we account for the normal cartilage thickness of the RH and coronoid, a 3- to 6-mm difference in height would be seen at surgery depending on whether the cartilage of the coronoid process is intact or removed. The distance between the tip of the coronoid and the anterior-most point of the RH is similar to the size of shavers used when débriding osteophytes during arthroscopy.
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Affiliation(s)
- Arnaud Walch
- Service de Chirurgie de la Main et du Membre Superieur, Hopital Edouard Herriot, Lyon, France.
| | | | - Nikolas K Knowles
- Roth/McFarlane Hand and Upper Limb Centre, St Joseph's Health Care, University of Western Ontario, London, ON, Canada
| | - Georges S Athwal
- Roth/McFarlane Hand and Upper Limb Centre, St Joseph's Health Care, University of Western Ontario, London, ON, Canada
| | - Graham J W King
- Roth/McFarlane Hand and Upper Limb Centre, St Joseph's Health Care, University of Western Ontario, London, ON, Canada
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Hackl M, Knowles NK, Wegmann K, Müller LP, Athwal GS, King GJW. Coronoid process reconstruction with a distal clavicle autograft: an in silico analysis of fitting accuracy. J Shoulder Elbow Surg 2021; 30:1282-1287. [PMID: 33045331 DOI: 10.1016/j.jse.2020.09.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 09/01/2020] [Accepted: 09/21/2020] [Indexed: 02/01/2023]
Abstract
BACKGROUND The coronoid process plays a vital role in preserving elbow stability. In cases of acute or chronic deficiency of the coronoid process, reconstruction is warranted to restore stability and to avoid early joint degeneration. The distal clavicle might be a useful osteochondral autograft for coronoid reconstruction with low donor-site morbidity. This study evaluated the fitting accuracy of the distal clavicle as an autograft for coronoid process reconstruction. METHODS One hundred upper-extremity computed tomography scans of 85 body donors were available for this study (mean age, 69 ± 17 years; 46 male and 39 female donors; 15 bilateral specimens). Standardized 40% transverse defects of the coronoid process were digitally created; the distal clavicles were digitally harvested and placed onto the defects by a best-fit technique in 2 different orientations using commercially available software: (1) with the superior aspect of the articular surface of the graft oriented toward the coronoid tip and (2) with the inferior aspect of the articular surface of the graft oriented toward the coronoid tip. The fitting accuracy of the grafts to the native coronoid process was evaluated from lateral to medial using custom code. RESULTS Regardless of the orientation of the graft, the distal clavicle provided a good fit in the central portion of the coronoid process. In the lateral and medial aspects of the defect, however, the fitting accuracy of the graft declined significantly (P ≤ .044). No significant differences were observed between ipsilateral and contralateral grafts (P ≥ .199). The intrarater reliability was excellent. CONCLUSION The results of this study suggest that a distal clavicle autograft may be suitable to replace a transverse defect of the coronoid process; however, it may not fully reconstruct the anteromedial and anterolateral aspects of the coronoid.
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Affiliation(s)
- Michael Hackl
- Faculty of Medicine, University of Cologne, Cologne, Germany; Center of Orthopedic and Trauma Surgery, University Hospital Cologne, Cologne, Germany; Roth
- McFarlane Hand and Upper Limb Centre, St Joseph's Health Care, University of Western Ontario, London, ON, Canada.
| | - Nikolas K Knowles
- Roth
- McFarlane Hand and Upper Limb Centre, St Joseph's Health Care, University of Western Ontario, London, ON, Canada
| | - Kilian Wegmann
- Faculty of Medicine, University of Cologne, Cologne, Germany; Center of Orthopedic and Trauma Surgery, University Hospital Cologne, Cologne, Germany
| | - Lars Peter Müller
- Faculty of Medicine, University of Cologne, Cologne, Germany; Center of Orthopedic and Trauma Surgery, University Hospital Cologne, Cologne, Germany
| | - George S Athwal
- Roth
- McFarlane Hand and Upper Limb Centre, St Joseph's Health Care, University of Western Ontario, London, ON, Canada
| | - Graham J W King
- Roth
- McFarlane Hand and Upper Limb Centre, St Joseph's Health Care, University of Western Ontario, London, ON, Canada
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Zhao S, Zeng C, Yuan S, Li R. Reconstruction of coronoid process of the ulna: a literature review. J Int Med Res 2021; 49:3000605211008323. [PMID: 33858252 PMCID: PMC8053771 DOI: 10.1177/03000605211008323] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 03/12/2021] [Indexed: 11/28/2022] Open
Abstract
As a pivotal part of the elbow joint structure, the coronoid process of the ulna plays a vital role in maintaining elbow joint stability. Loss of coronoid process height causes instability of the elbow joint depending on the fracture characteristics and size. The diagnosis and treatment of coronoid process fractures has gained widespread attention from orthopedic surgeons. Nevertheless, few reports have described reconstruction of coronoid process fractures and defects that affect elbow joint stability. Treatment of elbow joint instability induced by coronoid process defects is challenging because most cases are complicated by other elbow joint injuries. Moreover, the clinical efficacy remains unclear. The present narrative review was performed to examine the research progress on reconstruction of the coronoid process. The findings of this review provide evidence for clinical repair and reconstruction of coronoid process defects and contribute to the published literature on this topic.
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Affiliation(s)
- Shanwen Zhao
- Department of Foot and Ankle Surgery, Center for Orthopaedic Surgery, the Third Affiliated Hospital of Southern Medical University, Guangzhou, China
- Orthopaedic Hospital of Guangdong Province, Guangzhou, China
- Academy of Orthopaedics, Guangdong Province, Guangzhou, China
| | - Canjun Zeng
- Department of Foot and Ankle Surgery, Center for Orthopaedic Surgery, the Third Affiliated Hospital of Southern Medical University, Guangzhou, China
- Orthopaedic Hospital of Guangdong Province, Guangzhou, China
- Academy of Orthopaedics, Guangdong Province, Guangzhou, China
| | - Song Yuan
- Department of Orthopedics, Linzhi People’s Hospital, Linzhi, China
| | - Runguang Li
- Department of Foot and Ankle Surgery, Center for Orthopaedic Surgery, the Third Affiliated Hospital of Southern Medical University, Guangzhou, China
- Orthopaedic Hospital of Guangdong Province, Guangzhou, China
- Academy of Orthopaedics, Guangdong Province, Guangzhou, China
- Department of Orthopedics, Linzhi People’s Hospital, Linzhi, China
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Coronoid reconstruction using iliac crest bone autograft in a child with congenital elbow instability. CURRENT ORTHOPAEDIC PRACTICE 2018. [DOI: 10.1097/bco.0000000000000621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bellato E, Kim Y, Fitzsimmons JS, Berglund LJ, Hooke AW, Bachman DR, O'Driscoll SW. Coronoid reconstruction using osteochondral grafts: a biomechanical study. J Shoulder Elbow Surg 2017; 26:1794-1802. [PMID: 28734719 DOI: 10.1016/j.jse.2017.05.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 05/08/2017] [Accepted: 05/12/2017] [Indexed: 02/01/2023]
Abstract
HYPOTHESIS The purposes of this study were to test the hypothesis that coronoid deficiency in the setting of posteromedial rotatory instability (PMRI) must be reconstructed to restore articular contact pressures to normal and to compare 3 different osteochondral grafts for this purpose. METHODS After creation of a anteromedial fracture, six cadaveric elbows were tested under gravity varus stress using a custom-made machine designed to simulate muscle loads and to passively flex the elbow. Mean articular surface contact pressure data were collected and processed using TekScan sensors and software. After testing of the intact specimen (intact condition), a PMRI injury was created (PMRI condition). Testing was repeated after reconstruction of the lateral collateral ligament (LCL) (LCL-only condition), followed by reconstruction of the coronoid with 3 different osteochondral graft techniques (reconstructed conditions). RESULTS Contact pressure was consistently significantly higher in the PMRI elbow compared with the intact, LCL-only, and reconstructed conditions (P < .006). The LCL-only elbow contact pressure was significantly higher than that of the intact and reconstructed conditions from 5° to 55° of flexion (P = .018). The contact pressure of the intact elbow was never significantly different from that of the reconstructed elbow, except at 5° of flexion (P ≤ .008). No significant difference was detected between each of the reconstructed techniques (P ≥ .15). However, the annular surface of the radial head was the only graft that yielded contact pressures not significantly different from normal at any flexion angle. CONCLUSION Isolated reconstruction of the LCL did not restore native articular surface contact pressure, and reconstruction of the coronoid using osteochondral graft was necessary. There was no difference in contact pressures among the 3 coronoid reconstruction techniques.
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Affiliation(s)
- Enrico Bellato
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA; Department of Orthopedics and Traumatology, University of Turin Medical School, Turin, Italy
| | - Youngbok Kim
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA; Department of Orthopedic Surgery, Haeundae Paik Hospital, Inje University, Busan, Republic of Korea
| | | | | | | | - Daniel R Bachman
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
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Bellato E, O'Driscoll SW. Prosthetic replacement for coronoid deficiency: report of three cases. J Shoulder Elbow Surg 2017; 26:382-388. [PMID: 28089259 DOI: 10.1016/j.jse.2016.09.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 09/21/2016] [Accepted: 09/27/2016] [Indexed: 02/01/2023]
Abstract
BACKGROUND Persistent elbow instability associated with coronoid deficiency is a difficult condition to treat. Several surgical techniques have been described for coronoid reconstruction, but the resulting outcomes have been unpredictable. We hypothesized that a coronoid prosthesis could restore elbow stability. METHODS A nonanatomically shaped metallic coronoid prosthesis was custom designed for each of 3 patients. Each had a chronic fracture-subluxation with persistent instability, deficiencies of the coronoid, and compromise of the radial head. Each patient had undergone 2 to 4 prior failed operations. RESULTS At a mean follow-up of 11 years (range, 10-12), 2 of the 3 patients were completely pain free; the third had a visual analog scale pain score not greater than 3/10. All 3 maintained a stable joint, although a functional range of motion was not able to be maintained in any. Two patients rated themselves "improved" and 1 patient rated himself "almost normal" on the Summary Outcome Determination scale. All radiographic follow-up showed the coronoid prosthesis in proper position without loosening. CONCLUSION Prosthetic replacement of the coronoid appears successful in restoring stability in chronically unstable elbows with coronoid deficiency.
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Affiliation(s)
- Enrico Bellato
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA; Department of Orthopedics and Traumatology, University of Turin Medical School, Turin, Italy
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Abstract
The high stability of the elbow joint is provided by the congruent articular surfaces in combination with soft tissue stabilizers. The main osseous contributor of elbow stability is the coronoid, which is therefore referred to as a primary stabilizer. The radial head as a secondary stabilizer together with the medial collateral ligament assures valgus stability and together with the coronoid it assures posterolateral stability. Insufficiency of the osseous stabilizers may lead to difficulties in the treatment of chronic dislocation and complex instability. Thereby reconstruction of the osseous constraints of the elbow joint is not performed in isolation from addressing insufficient soft-tissue stabilizers. Bony stabilizers and reconstructional procedures are discussed in this review.
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Gray AB, Alolabi B, Deluce S, Ferreira LM, Athwal GS, King GJW, Johnson JA. A biomechanical assessment of fixation methods for a coronoid prosthesis. Clin Biomech (Bristol, Avon) 2016; 32:14-9. [PMID: 26775229 DOI: 10.1016/j.clinbiomech.2015.11.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 11/23/2015] [Accepted: 11/25/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND The coronoid process is an integral component for maintaining elbow joint stability. When fixation of a fracture is not possible, prosthetic replacement may be a feasible solution for restoring stability. The purpose of this in-vitro biomechanical study was to compare fixation methods for a coronoid implant. METHODS A coronoid prosthesis was subjected to distally-directed tip loading after implantation using four fixation methods: press-fit, anterior-to-posterior screws, posterior-to-anterior screws, and cement. Testing was performed on seven fresh-frozen ulnae in a repeated-measures model. Rounds of cyclic loading were applied at 1 Hz, for 100 cycles, increased in 50 N increments up to a maximum of 400 N. Micro-motion of the implant was quantified using an optical-tracking system. Outcome variables included total displacement, distal translation, gapping, anterior translation and axial stem rotation. FINDINGS Cement fixation reduced implant micro-motion compared to screw fixation, while the greatest implant micro-motion was observed in press-fit fixation. Comparing screw-fixation techniques, posterior-anterior screws provided superior stability only in distal translation. The implant did not experience displacements exceeding 0.9 mm with screw or cement fixation. INTERPRETATION Cement fixation provides the best initial fixation for a coronoid implant. However, the stability provided by both methods of screw fixation may be sufficient to allow osseous integration to be achieved for long-term fixation. Large displacements were observed using the press-fit fixation technique, suggesting that modifications would need to be developed and tested before this technique could be recommended for clinical application.
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Affiliation(s)
- Alia B Gray
- Hand and Upper Limb Centre, University of Western Ontario, St. Joseph's Health Centre, 268 Grosvenor St., London, ON N6A 4L6, Canada.
| | - Bashar Alolabi
- Hand and Upper Limb Centre, University of Western Ontario, St. Joseph's Health Centre, 268 Grosvenor St., London, ON N6A 4L6, Canada.
| | - Simon Deluce
- Hand and Upper Limb Centre, University of Western Ontario, St. Joseph's Health Centre, 268 Grosvenor St., London, ON N6A 4L6, Canada.
| | - Louis M Ferreira
- Hand and Upper Limb Centre, University of Western Ontario, St. Joseph's Health Centre, 268 Grosvenor St., London, ON N6A 4L6, Canada.
| | - George S Athwal
- Hand and Upper Limb Centre, University of Western Ontario, St. Joseph's Health Centre, 268 Grosvenor St., London, ON N6A 4L6, Canada.
| | - Graham J W King
- Hand and Upper Limb Centre, University of Western Ontario, St. Joseph's Health Centre, 268 Grosvenor St., London, ON N6A 4L6, Canada.
| | - James A Johnson
- Hand and Upper Limb Centre, University of Western Ontario, St. Joseph's Health Centre, 268 Grosvenor St., London, ON N6A 4L6, Canada.
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Xiao K, Zhang J, Li T, Dong YL, Weng XS. Anatomy, definition, and treatment of the "terrible triad of the elbow" and contemplation of the rationality of this designation. Orthop Surg 2015; 7:13-8. [PMID: 25708030 DOI: 10.1111/os.12149] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 12/05/2014] [Indexed: 12/01/2022] Open
Abstract
In the realm of orthopaedics, the terrible triad of the elbow is infamous, not simply because the prognosis is poor for most patients, but also, maybe to a greater extent, because the unique name of this malady attracts considerable attention and interest in both doctors and patients. The adjective terrible is bestowed on an elbow triad that comprises three coexisting complicated traumas; namely, radial head and ulnar coronoid process fractures and posterior dislocation of the elbow joint. In this review, the classification, treatment principles and prognosis for different forms of management of the radial head and ulnar coronoid process fractures and the ligaments lesions are introduced sequentially and various surgical procedures and their efficacy are discussed. This triad has long given orthopedic surgeons headaches. Nonetheless, in recent years a series of anatomical mechanical studies on the elbow joint have been published and there have been several breakthroughs in surgical techniques for managing this elbow triad. This review examines some memorable millstones and unveils trends in the current clinical norm for this triad. The accomplishments achieved recently have reportedly resulted in enhanced prognoses in the last two or three years compared with previous years. It is therefore high time to revise our thoughts about the justice and accuracy of defining this triad of the elbow as terrible. Lastly, we may safely conclude that the terrible triad of the elbow is much less terrible than previously, provided the commonly approved clinical approaches are undertaken.
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Affiliation(s)
- Ke Xiao
- Orthopaedic Department of Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
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Alolabi B, Gray A, Ferreira LM, Johnson JA, Athwal GS, King GJW. Reconstruction of the coronoid process using the tip of the ipsilateral olecranon. J Bone Joint Surg Am 2014; 96:590-6. [PMID: 24695926 DOI: 10.2106/jbjs.l.00698] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Autograft reconstruction of the coronoid using the tip of the olecranon has been described as a treatment option for comminuted coronoid fractures or coronoid nonunions that are not repairable. The purpose of this in vitro biomechanical study of the coronoid-deficient elbow was to determine whether coronoid reconstruction using the tip of the ipsilateral olecranon would restore elbow kinematics. METHODS An elbow motion simulator was used to perform active and passive extension of six cadaveric arms in the horizontal, valgus, varus, and vertical orientations. Elbow kinematics were quantified with use of the screw displacement axis of the ulna with respect to the humerus. Testing was performed with an intact coronoid, a 40% coronoid deficiency, and a coronoid reconstruction using the tip of the ipsilateral olecranon. RESULTS Creation of a 40% coronoid deficiency resulted in significant changes (range, 3.6° to 10.9°) in the angular deviations of the screw displacement axis relative to the intact state during simulated active and passive extension in the varus orientation with the forearm in pronation and in supination (p < 0.05). Reconstruction of the coronoid using the ipsilateral olecranon tip restored the angular deviations to those in the intact state (p > 0.05) with the arm in all orientations except valgus, in which there was a small but significant difference (0.4° ± 0.2°, p = 0.04) during passive motion with forearm supination. CONCLUSIONS Reconstruction of the coronoid using the tip of the ipsilateral olecranon was an effective method for restoring normal kinematics over a range of elbow motion from 20° to 120° in a cadaveric model of an elbow with a 40% coronoid deficiency. This reconstruction technique may prove beneficial for patients with elbow instability due to coronoid deficiency.
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Affiliation(s)
- Bashar Alolabi
- Hand and Upper Limb Centre, St. Joseph's Health Centre, 268 Grosvenor Street, London, ON N6A 4L6, Canada. E-mail address for G.J.W. King:
| | - Alia Gray
- Hand and Upper Limb Centre, St. Joseph's Health Centre, 268 Grosvenor Street, London, ON N6A 4L6, Canada. E-mail address for G.J.W. King:
| | - Louis M Ferreira
- Hand and Upper Limb Centre, St. Joseph's Health Centre, 268 Grosvenor Street, London, ON N6A 4L6, Canada. E-mail address for G.J.W. King:
| | - James A Johnson
- Hand and Upper Limb Centre, St. Joseph's Health Centre, 268 Grosvenor Street, London, ON N6A 4L6, Canada. E-mail address for G.J.W. King:
| | - George S Athwal
- Hand and Upper Limb Centre, St. Joseph's Health Centre, 268 Grosvenor Street, London, ON N6A 4L6, Canada. E-mail address for G.J.W. King:
| | - Graham J W King
- Hand and Upper Limb Centre, St. Joseph's Health Centre, 268 Grosvenor Street, London, ON N6A 4L6, Canada. E-mail address for G.J.W. King:
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Kiene J, Wäldchen J, Paech A, Jürgens C, Schulz A. Midterm Results of 58 Fractures of the Coronoid Process of the Ulna and their Concomitant Injuries. Open Orthop J 2013; 7:86-93. [PMID: 23667407 PMCID: PMC3648775 DOI: 10.2174/1874325001307010086] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Revised: 03/14/2013] [Accepted: 03/14/2013] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND In general, fractures of the coronoid process are rare and usually occur in combination with additional elbow joint injuries. The treatment of these injuries aims to regain a stable as well as a flexible and loadable joint. Although there is currently little evidence, therapy recommendations remain controversial. Therefore, the aim of this study was to prognostically determine relevant factors for therapy recommendation by analysing a representative patient population of two trans-regional trauma centres. MATERIAL AND METHODS Seventy-seven patients with a fracture of the coronoid process were treated within an 8-year period (2001 to 2009). After an average of 48 months (SD 31), treatment outcome of 58 patients (75%) was acquired. The results were statistically analysed. RESULTS The average age of the patient was 51.8 years (SD 13.6); 36 were male and 34 had a fracture on the right arm. Applying the fracture types of the coronoid process in accordance with Regan/Morrey, the result was: Type I (19), II (17) and III (22). Further injuries were also detected: 40 radial head fractures, 17 proximal ulnar fractures and 2 fractures of the olecranon. A luxation was detected in 44 of the 58 patients (76%). The patients' average MEPS (Mayo Elbow Performance Score) was 80.6 points (SD 18), with significant differences between the various therapy strategies. Fifteen% of the coronoid process fractures were reconstructable to a limited extent only by means of osteosynthesis. In 33% of the patients, instabilities remained. The average extension/flexion came to 107° (SD 28), and pronation and supination 153° (SD 38). CONCLUSION At present, a surgical therapy of ligamentary injuries cannot be statistically justified. A stable osseous reconstruction appears to make more sense. The strongest negative prognostic parameters in our patient population were: therapy with an external fixator, immobilisation for more than 21 days, the occurrence of complications and unstable osteosyntheses on the coronoid process.
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Affiliation(s)
- J Kiene
- Clinic for Surgery of the Skeletal and Locomotor System, Department of Accident Surgery, University Medical Centre - Lübeck Site, Germany
| | - J Wäldchen
- Clinic for Surgery of the Skeletal and Locomotor System, Department of Accident Surgery, University Medical Centre - Lübeck Site, Germany
| | - A Paech
- Clinic for Surgery of the Skeletal and Locomotor System, Department of Accident Surgery, University Medical Centre - Lübeck Site, Germany
| | - Ch Jürgens
- Accident Hospital of the Occupational Insurance Association Hamburg, Clinic for Accident and Reconstructive Surgery, Germany
| | - A.P Schulz
- Accident Hospital of the Occupational Insurance Association Hamburg, Clinic for Accident and Reconstructive Surgery, Germany
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