Corail Surgical Technique 1
2013-06-12
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CORAIL Hip System ® Surgical Technique The science of simplicity With 1,000,000 stems provided for patients worldwide1 and two and a half decades of clinical success, the CORAIL® Total Hip System now has the most extensive experience with a hydroxyapatite (HA) coated stem. Combining basic design features, including shape, surface finish and extensive hydroxyapatite coating, with a Enhancements to the CORAIL include: • Neck geometry designed for maximum range of motion • High offset option to treat increased femoral offset patients • Coxa vara stem option to treat varus neck angled patients simple compaction broach-only surgical technique, the CORAIL Total Hip System has demonstrated reproducible results and long-term biomechanical joint restoration. Advancing science, enhancements were made to CORAIL to provide solutions for orthopaedic surgeons treating US Surgeon Team James Caillouette, MD Charles R. Clark, MD Mark Froimson, MD Jonathan; Garino, MD William Lanzer, MD Joel Matta, MD Sam Sydney, MD today’s higher-demand patients. 2 DePuy Synthes Joint Reconstruction Corail® Hip System Surgical Technique 1 2 3 1 Three offset options to restore hip biomechanics 2 Tapered neck geometry and Articul/eze® taper designed to increase range of motion 3 Low-profile lateral shoulder design enables easy insertion in reduced incision techniques, including the anterior approach. 4 Available in collared or non-collared options 5 Step geometry converts hoop stresses to compressive loads 6 Vertical/horizontal grooves provide rotational and axial stability 7 Proprietary HA coating 4 5 6 7 Simple Surgical Technique: Reproducible surgical results with minimal instrumentation, broach-only technique Compaction Broaching Technique: Preservation of endosteal blood supply and cancellous bone structures Dual Offset Options: Accommodates a variety of patient anatomies to restore hip biomechanics Two and a Half-Decade Clinical Success: Trust for the surgeon and for the patient Surgical Technique Corail® Hip System DePuy Synthes Joint Reconstruction 3 Preoperative planning The CORAIL stem may be implanted using any of the contemporary less invasive approaches as well as the traditional surgical techniques for total hip arthroplasty. The goal of any technique selected is adequate visualization of both the acetabulum and the proximal femur so that a direct view down the femoral canal can be gained and the entire rim and depth of the acetabulum visualized. Preoperative planning enables the surgeon to prepare for the case and anticipate situations that may arise during surgery. A thorough preoperative plan incorporates elements from the patient’s history, physical examination and radiographic analysis. Preoperative planning goals 1. Determine preoperative leg length discrepancy 2. Assess acetabular component size and placement 3. Determine femoral component, size, position and fit 4. Assess femoral offset 4 DePuy Synthes Joint Reconstruction Corail® Hip System Surgical Technique Radiographs The first step in accurate templating is obtaining highquality radiographs using a standardized protocol with known magnification. Use magnification markers attached to the patient leg at the level of the greater trochanter to verify magnification. The CORAIL Total Hip System incorporates 20% magnification. Obtain an anterior/posterior (A/P) view of the pelvis with both extremities in 15 degrees of internal rotation to position the head and neck parallel to the coronal plane. A direct lateral radiograph should also be obtained and used to determine femoral fixation. Determination of leg length discrepancy Perform a clinical evaluation in conjunction with a radiographic analysis to determine preoperative leg length discrepancy and use both to determine intraoperative leg length management. To estimate leg length discrepancy radiographically, draw a reference line through the bottom of the ischium (Figure A). Measure the distance from the lesser trochanter landmark to the reference line on each side. The difference between the two is the radiographic leg length discrepancy. Clinical examination should help determine the actual leg length irregularity. The tip of the greater trochanter may be used as an alternative reference mark in conjunction with the lines through the obturator foramina. Figure A Surgical Technique Corail® Hip System DePuy Synthes Joint Reconstruction 5 Preoperative Planning Acetabular cup size and position Most sizing determinations are made using the A/P radiograph of the hip. Determine the optimal position for the acetabular component and estimate the size using the Pinnacle® Acetabular Cup System template overlays. The acetabular teardrop can be referenced as the interior margin of the acetabular reconstruction. The goal in cementless acetabular fixation is to optimize position and bone contact. Once this is determined, mark the intended center of rotation of the bearing surface on the A/P radiograph (Figure B). +4 Head Center 0 Head Center 54mm Figure B Cup center of rotation Cementless femoral component selection The CORAIL stem is designed to seat in cancellous bone, and cortical contact should be avoided when templating. Select the appropriate template size that is smaller than the cortex in the proximal femur. The femoral template should be in line with the long axis of the femur and the neck resection line drawn at the point where the selected stem provides the desired amount of leg length. The vertical distance between the planned center of rotation of the acetabular component and the center of rotation of the femoral head constitutes the distance the leg length will be adjusted. The level of neck osteotomy depends on the stem size and the desired leg length, with the goal of using a non-skirted modular head to optimize range of motion prior to prosthetic impingement. To help properly position the template on the lateral radiograph, estimate the distance between the tip of the greater trochanter and the lateral shoulder of the prosthesis using the A/P radiograph (Figure C). Figure C Head center of rotation Verify that the stem size chosen in the A/P plane also fits in the lateral plane. The lateral radiograph of a properly sized CORAIL implant will not exhibit cortical contact. 6 DePuy Synthes Joint Reconstruction Corail® Hip System Surgical Technique Offset requirements The CORAIL Total Hip System implants are available with standard, high offset and varus options for all stem body sizes (except 6 and 8). Through templating and intraoperative trialing, determine which option restores proper offset by matching the cup’s center of rotation with the desired head center of rotation (Figure D). Figure D Head center of rotation Cup center of rotation Surgical Technique Corail® Hip System DePuy Synthes Joint Reconstruction 7 Surgical technique 1 Neck Osteotomy The level of the neck resection is determined during preoperative templating. The cut will be approximately 1 cm above the lesser trochanter. Center the resection guide along the neutral axis of the femur and mark the resection line. Perform the osteotomy, taking care to maintain the correct angle (Figure 1). Figure 1 8 DePuy Synthes Joint Reconstruction Corail® Hip System Surgical Technique 2 Reaming and alignment Make sure that the acetabulum is fully exposed and remove soft tissue from the acetabular rim. Progressively ream the acetabulum until bleeding subchondral bone is reached and a hemispherical dome is achieved (Figure 2A). Using the cup impactor, place a trial cup sizer into the reamed acetabulum and assess its position and cortical bone contact. Figure 2A The inferior rim of the trial cup should typically be level with the bottom of the teardrop. The trial cup angle of orientation should match that recorded during preoperative templating, which is normally 45 degrees of lateral opening (abduction) and 15–30 degrees of anteversion. Confirm this using the external alignment instrumentation (Figures 2B and 2C). Remove the cup impactor from the trial shell and place the desired liner trial into the cup trial. Figure 2B Figure 2C Surgical Technique Corail® Hip System DePuy Synthes Joint Reconstruction 9 Surgical Technique 3 Metaphyseal preparation (optional) The version osteotome can be used to remove a wedge of cancellous bone, creating a starting cavity for broach insertion. The osteotome can be positioned in a neutral or anteverted fashion, depending on patient anatomy. A modular osteotome may also be used to accomodate multiple approaches to the hip (Figure 3). Figure 3 11 DePuy Synthes Joint Reconstruction Corail® Hip System Surgical Technique 4 Femoral canal preparation The CORAIL broach is available with several broach handle options depending on the surgical approach (Figures 4A, 4B, 4C); dual-offset handle also available, but not shown. Select the appropriate handle for the surgical approach. Beginning with the smallest CORAIL compaction broach attached to the selected broach handle, progressively enlarge the metaphyseal cavity by compacting and shaping the cancellous bone until the level of the neck resection is reached. Broaching should continue until complete stability is achieved with the last size broach used without reaching cortical contact in the femoral canal, ensuring cancellous bone preservation. The size of each broach is the same as the corresponding implant without HA (hydroxyapatite) coating (155 microns). If you impact a broach and it does not fully seat in the canal, it is recommended to go back to the previous size broach and re-establish the broach envelope of cancellous bone to accept the smaller size implant. The CORAIL implant’s design allows you to go back to the smaller size. Posterior Approach Figure 4A Posterolateral/ Anterolateral Approach Figure 4B Anterior Approach Figure 4C 5 Calcar Preparation (Optional) Place the calcar planer onto the broach stud and mill the calcar to the broach face, allowing the implant collar (if used) to seat flush against the calcar. Make certain the calcar planer is rotating before engaging calcar to prevent the planer from binding on the calcar. Surgical Technique Corail® Hip System DePuy Synthes Joint Reconstruction 11 Surgical Technique 6 Trial Reduction Trial neck segments and trial modular heads are available to assess proper component position, joint stability, range-of-motion and leg length (Figures 5A, 5B and 5C). The CORAIL is available in three stem options, a standard collarless/collared stem, a high offset collarless stem, and a coxa vara collared stem and offers the appropriate neck segment to match up with the stem option. With the CORAIL broach in situ, attach one of the three neck segment options. Perform a trial reduction with a +5 Articul/eze head trial to allow for one up or down adjustment in neck length without using a skirted femoral head (see stem specifications chart in back of the technique for adjustment measurements). Reduce the hip and assess stability through a full range of motion, and check for impingement. Leg length and offset may be adjusted by varying the neck length with the appropriate femoral head. Alternatively, leg length may be reduced with a lower neck cut and advancing the broach or alternatively driving the broach and repeating the calcar milling. Standard offset collared/collarless (KA/KS) Figure 5A Coxa vara collared (KLA) Figure 5C 7 Acetabular Shell Insertion Remove the trial acetabular components and implant the desired acetabular shell (Figure 6). Take care to ensure cup orientation mimics the orientation of the trial component. Insert a trial liner into the shell implant. Figure 6 11 DePuy Synthes Joint Reconstruction Corail® Hip System Surgical Technique High offset collarless (KHO) Figure 5B 8 Femoral Component Insertion CORAIL Total Hip System implants can be inserted with either a threaded retaining inserter or a non-threaded inserter. Both inserters provide rotational control during stem implantation. Figure 7B A new modular inserter system further enables multiple approaches (see ordering information). Prior to using either inserter, the CORAIL stem should be inserted by hand into the femoral canal with 1.5 to 2.0 cm of HA showing above the resection. If the retaining inserter is chosen, verify that it is assembled with the inserter shaft threaded into the inserter handle (Figure 7A). Ensure the tines on the inserter are aligned with the recesses of the inserter platform on the top of the implant (Figure 7B). Fully engage the threads of the inserter into the implant to ensure the inserter is securely attached to the implant. Figure 7A Figure 7C If the non-retaining inserter is chosen, introduce stem by hand into femoral canal (Figure 8A). Ensure the tines of the inserter are aligned with the recesses of the inserter platform on the top of the implant (Figure 8B). Figure 8B With the taper protected by the cover, gently introduce the implant and impact it in the central axis of the femur, to the level of the HA coating (or the collar) (Figures 7C and 8C). With the prostheses in situ, remove the taper cover and add the trial head and acetabular trial liner to assess implant stability and leg length. Figure 8A Figure 8C Surgical Technique Corail® Hip System DePuy Synthes Joint Reconstruction 11 Surgical Technique 9 Acetabular Insert Implantation Following the final trial reduction, remove the trial acetabular liner and insert the appropriate acetabular liner (Figure 9). Figure 9 10 Femoral Head Impaction Irrigate, clean and dry the prosthesis to ensure the taper is free of debris. Place the appropriate femoral head onto the taper and lightly tap using the head impactor before reducing the hip (Figure 10). Figure 10 11 DePuy Synthes Joint Reconstruction Corail® Hip System Surgical Technique 5 years post-op Surgical Technique Corail® Hip System DePuy Synthes Joint Reconstruction 11 CORAIL® AMT Stem Specifications Standard Offset - Collarless/Collared Size Stem Length (mm) A Offset (mm) B B Neck Length Neck Shaft (mm) C Angle D Leg Adjustment Length (mm) E 6* 93 30.8 33.8 135º 34 8 95 38.0 38.5 135º 36 9 110 38.5 38.5 135º 36 10 120 39.5 38.5 135º 36 11 125 40.0 38.5 135º 36 12 130 41.0 38.5 135º 36 13 135 41.5 38.5 135º 36 14 140 42.0 38.5 135º 36 15 145 43.0 38.5 135º 36 16 150 43.5 38.5 135º 36 18 160 44.5 38.5 135º 36 20 170 45.5 38.5 135º 36 E C D * The size 6 is available in collarless only. High Offset - Collarless Size Stem Length (mm) A Offset (mm) B Neck Length Neck Shaft (mm) C Angle D Leg Adjustment Length (mm) E 9 110 45.5 43.2 135º 10 120 46.5 43.2 135º 36 36 11 125 47.0 43.2 135º 36 12 130 48.0 43.2 135º 36 13 135 48.5 43.2 135º 36 14 140 49.0 43.2 135º 36 15 145 50.0 43.2 135º 36 16 150 50.5 43.2 135º 36 18 160 51.5 43.2 135º 36 20 170 52.5 43.2 135º 36 Coxa Vara Offset - Collared Size Stem Length (mm) A Offset (mm) B Neck Length Neck Shaft (mm) C Angle D Leg Adjustment Length (mm) E 9 110 45.5 40.3 125º 31 10 120 46.5 40.3 125º 31 11 125 47.0 40.3 125º 31 12 130 48.0 40.3 125º 31 13 135 48.5 40.3 125º 31 14 140 49.0 40.3 125º 31 15 145 50.0 40.3 125º 31 16 150 50.5 40.3 125º 31 18 160 51.5 40.3 125º 31 20 170 52.5 40.3 125º 31 Note: All measurements are based on a 28 mm +5.0 Articul/eze head, which is the middle length of non-skirted femoral heads 11 DePuy Synthes Joint Reconstruction Corail® Hip System Surgical Technique A Ordering Information Implants Standard Collarless Cat. No. Size L20106 6 3L92507 8 3L92509 9 3L92510 10 3L92511 11 3L92512 12 3L92513 13 3L92514 14 3L92515 15 3L92516 16 3L92518 18 3L92520 20 Standard Collared Cat. No. Size 3L92498 8 3L92499 9 3L92500 10 3L92501 11 3L92502 12 3L92503 13 3L92504 14 3L92505 15 3L92506 16 3L92508 18 3L92521 20 High Offset Collarless Cat. No. Size L20309 9 L20310 10 L20311 11 L20312 12 L20313 13 L20314 14 L20315 15 L20316 16 L20318 18 L20320 20 Coxa Vara Collared Cat. No. Size 3L93709 9 3L93710 10 3L93711 11 3L93712 12 3L93713 13 3L93714 14 3L93715 15 3L93716 16 3L93718 18 3L93720 20 Instruments CORAIL AMT Broach Case† L20440 Neck Resection Guide L20408 Broach Size 8 L20409 Broach Size 9 L20410 Broach Size 10 L20411 Broach Size 11 L20412 Broach Size 12 L20413 Broach Size 13 L20414 Broach Size 14 L20415 Broach Size 15 L20416 Broach Size 16 L20418 Broach Size 18 L20420 Broach Size 20 L20431 CORAIL Standard Offset Neck Segment L20432 CORAIL Coxa Vara Neck Segment L20433 CORAIL High Offset Neck Segment 9522-11-500 CORAIL AMT Curved Handle 9522-10-500F CORAIL AMT Straight Broach Handle 9522-12-500F CORAIL AMT Extra Curved Handle 2002-31-000 Anteversion Osteotome 2570-04-100 Calcar Planer-Small 2665-99-000 CORAIL AMT Core Case Complete 2354-10-000 Canal Probe 53-0360 T-Handle 2570-05-000 Retaining Implant Inserter 2570-05-100 Standard Implant Inserter 2001-65-000 Head Impactor 2530-81-000 28 mm Articul/eze +1.5 mm Trial Head 2530-82-000 28 mm Articul/eze +5.0 mm Trial Head 2530-83-000 28 mm Articul/eze +8.5 mm Trial Head 2530-84-000 28 mm Articul/eze +12.0 mm Trial Head 2530-85-000 28 mm Articul/eze +15.5 mm Trial Head 2665-99-003 Core Case Complete X-Ray Templates 2665-01-500 Collarless X-Ray Template 2665-02-500 Collared X-Ray Template 2665-03-500 Size 6 X-Ray Template †Note: For size 6 instrumentation and implant ordering information, see the CORAIL Size 6 surgical technique - EO-75, available from your DePuy Synthes Joint Reconstruction Sales Consultant. Broach Case Complete Surgical Technique Corail® Hip System DePuy Synthes Joint Reconstruction 11 Ordering Information Instruments TSS Femoral Core Case 1 2598-07-400 Base 2598-07-411 Tray 2598-07-410 Lid 2800-88-511 SE Set (includes all instruments) 2598-07-460 Universal Stem Inserter Handle Trial Heads – 2 Sets per Case *accommodates up through size 44 mm 2598-07-570 Retaining Stem Inserter (2 pcs) 2598-07-530 Modular Box Osteotome Any two of the below handles accommodated: 2570-00-000 SUMMIT® Universal Broach Handle 2598-07-540 Long Posterior Broach Handle 2598-07-550 Extra Curved Broach Handle 2598-07-350 Anterior Dual Offset Broach Handle – Left 2598-07-360 Anterior Dual Offset Broach Handle – Right 9522-10-500F CORAIL AMT Straight Broach Handle 9522-11-500 CORAIL AMT Curved Broach Handle 2598-07-470 CORAIL/TRI-LOCK® Posterior Stem Inserter Shaft 2598-07-480 SUMMIT Posterior Stem Inserter Shaft 2598-07-435 Bullet Tip Stem Inserter Shaft 2598-07-430 Standard Straight Stem Inserter Shaft 2598-07-440 CORAIL/TRI-LOCK Anterior Stem Inserter Shaft 2598-07-450 SUMMIT Anterior Stem Inserter Shaft TSS Femoral Core Case 2 2598-07-421 Base 2598-07-422 Lid 2800-88-512 SE Set (includes all instruments) 2354-10-000 Muller Awl Reamer with Hudson End 2001-42-000 T-Handle 2001-80-501 IM Initiator Sized 9400-80-007 Shielded Calcar Planer 85-3927 Femoral Rasp 9400-80-001 Canal Finder 2001-65-000 Femoral/Humeral Head Impactor 2001-66-000 Replacement Tip Femoral Head Impactor 11 DePuy Synthes Joint Reconstruction Corail® Hip System Surgical Technique Essential Product Information CORAIL AMT Hip Important This Essential Product Information sheet does not include all of the information necessary for selection and use of a device. Please see full labeling for all necessary information. Indications 3. Poor bone quality, such as osteoporosis, where, in the surgeon’s opinion, there could be considerable migration of the prosthesis or a significant chance of fracture of the femoral shaft, considerable migration of the prosthesis or a significant chance of fracture of the femoral shaft and/or the lack of adequate bone to support the implant(s). The CORAIL AMT Hip Prosthesis is intended for use in total hip arthroplasty and is intended for pressfit (uncemented) use. Total hip arthroplasty is intended to provide increased patient mobility and reduce pain by replacing the damaged hip joint articulation in patients where there is evidence of sufficient sound bone to seat and support the components. Total hip replacement is indicated in the following conditions: 4. Charcot’s or Paget’s disease. 1. A severely painful and/or disabled joint from osteoarthritis, traumatic arthritis, rheumatoid arthritis, or congenital hip dysplasia. Warnings and Precautions 2. Avascular necrosis of the femoral head. • When changing the head on a femoral stem which is still in place, it is essential to use a metal-metal interface 3. Acute traumatic fracture of the femoral head or neck. 4. Failed previous hip surgery including joint reconstruction, internal fixation, arthrodesis, hemiarthroplasty, or total hip replacement. 5. For hemi-hip arthroplasty, any pathological condition of the acetabulum, such as distorted acetabuli with irregularities, protrusion acetabuli (arthrokatadysis), or migrating acetabuli, that would preclude the use of the natural acetabulum as an appropriate articular surface for the hemi-hip prosthesis. • HA coated implants must not be implanted with cement 5. Certain cases of ankylosis. • For some stems, head offset ‘Warning’ notices are visible on labels to limit the maximum offset used for the head. For the CORAIL Revision stem, the maximum offset used for the head is limited to 13mm. HA-coated stems are indicated for cementless use only. Adverse Events Contraindications The following are the most frequent adverse events after hip arthroplasty: change in position of the components, loosening of components, wear or fracture of components, dislocation, infection, peripheral neuropathies, tissue reaction. The following conditions are contraindications for total or hemi-hip replacement: 1. Active local or systemic infection. 2. Loss of musculature, neuromuscular compromise or vascular deficiency in the affected limb rendering the procedure unjustified. Surgical Technique Corail® Hip System DePuy Synthes Joint Reconstruction 11 References 1. Data on file at DePuy Orthopaedics, Inc. Limited Warranty and Disclaimer: DePuy Synthes Joint Reconstruction products are sold with a limited warranty to the original purchaser against defects in workmanship and materials. Any other express or implied warranties, including warranties of merchantability or fitness, are hereby disclaimed. WARNING: In the USA, this product has labeling limitations. See package insert for complete information. CAUTION: USA Law restricts these devices to sale by or on the order of a physician. Not all products are currently available in all markets. US agent DePuy Orthopaedics, Inc. 700 Orthopaedic Drive Warsaw, IN 46582 USA T. +1 (800) 366-8143 Manufactured by DePuy France SAS 7 Allee Irene Joliot Curie 69801 St. Priest Cedex France www.depuysynthes.com © DePuy Synthes Joint Reconstruction, a division of DOI 2013. 0612-82-501 (Rev. 7) 2.5M 05/13
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