# K221646: CD HORIZON™ ASTUTE™ SPINAL SYSTEM; CD HORIZON™ Growth Rod Conversion Set; CD HORIZON™ SPINAL SYSTEM; CD Horizon™ Fenestrated Screw Set; COLORADO 2™ SPINAL System; GDLH™ POSTERIOR SPINAL SYSTEM; SHILLA™ Growth Guidance System; TENOR™ SPINAL SYSTEM

- Pathway: 510(k) (Traditional)
- Applicant: Medtronic Sofamor Danek USA, Inc.
- Decided: Oct 4, 2022 after 120 days
- Product code: NKB (Thoracolumbosacral Pedicle Screw System)
- Device class: 2
- Regulation: 21 CFR 888.3070
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 22 generations back to K841189 (1984). 497 ancestors in all.
20 later devices descend from it; 2 cite it directly.
0 of 518 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K201407: CD Horizon™ Spinal System, Medtronic Sofamor Danek USA, Inc. (2020) Summary page 14.
- K191066: CD Horizon™ Astute™ Spinal System, Medtronic Sofamor Danek USA, Inc. (2019) Summary page 14.
- K150200: CD HORIZON Growth Rod Conversion Set, Medtronic Sofamor Danek USA, Incorporated (2015) Summary page 14.
- K201362: CD Horizon™ Fenestrated Screw Set, CD Horizon™ Spinal System, Kyphon™ HV-R™ Bone Cement, Medtronic (2020) Summary page 14.
- K030875: Modification to Colorado 2 Spinal System, Medtronic Sofamor Danek, Inc. (2003) Summary page 14.
- K954645: Titanium GDLH Posterior Spinal System, Sofamor Danek USA,Inc. (1996) Summary page 14.
- K140750: Shilla Growth Guidance System, Medtronic Sofamor Danek USA, Inc. (2014) Summary page 14.
- K022191: Modification to Tenor Spinal System, Medtronic Sofamor Danek, Inc. (2002) Summary page 14.

## Most influential descendants
- K223494: CD Horizon Spinal System (2023), 17 descendants of its own
- K233951: CD Horizon ModuLeX Spinal System (Shanks, Head Assemblies, and Set Screw) (2024), 5 descendants of its own
- K233508: iFuse Bedrock Granite® Implant System (2024), 5 descendants of its own
- K243007: CD Horizon™ Spinal System (2024), 3 descendants of its own
- K253802: KHEIRON® Spinal Fixation System, including patient specific K-ROD (2026), 1 descendant of its own

## Indications for use
The CD Horizon™ Astute™ Spinal System is intended to provide for posterior, supplemental fixation when used with an interbody fusion cage for patients diagnosed with degenerative disc disease (DDD- defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies). These DDD patients may also have up to Grade 1 spondylolisthesis or retrolisthesis at the involved level. This device is intended for 1-2 level use in the lumbosacral spine (L2 — S1) in skeletally mature patients. The device is intended for use with an interbody fusion cage at the instrumented level and is not intended for stand-alone use. The CD Horizon™ Growth Rod Conversion Set is indicated in patients with potential for additional spinal growth under 10 years of age who require surgical treatment to obtain and maintain correction of severe, progressive, life-threatening, early-onset spinal deformities associated with thoracic insufficiency including early-onset scoliosis. The CD Horizon™ Growth Rod Conversion Set may be used with any cleared traditional CD Horizon™ Spinal System rod construct ranging in diameter from 3.5mm to 5.5mm, with the exception of PEEK Rod constructs. The CD Horizon™ Growth Rod Conversion Set may not be used with PEEK rods, Spire™ Spinous Process Plates, or Shape Memory Alloy (SMA) Staples. The CD Horizon™ Spinal System with or without Sextant™ instrumentation is intended for posterior, non-cervical fixation as an adjunct to fusion for the following indications: degenerative disc disease (DDD - defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies), spondylolisthesis, trauma (i.e. fracture or dislocation), spinal stenosis, curvatures (i.e. scoliosis, kyphosis, or lordosis), tumor, pseudarthrosis, and/or failed previous fusion. Except for hooks, when used as an anterolateral thoracic/lumbar system, CD Horizon™ Spinal System titanium, cobalt chrome, and stainless steel implants may also be used for the same indications as an adjunct to fusion. With the exception of DDD, CD Horizon™ Legacy™ 3.5mm rods and associated components may be used for the aforementioned indications in skeletally mature patients as an adjunct to fusion. The 3.5mm rods may be used for the specific pediatric indications noted below. When used for posterior non-cervical pedicle screw fixation in pediatric patients, CD Horizon™ Spinal System titanium, cobalt chrome, and stainless steel implants are indicated as an adjunct to fusion to treat progressive spinal deformities (i.e. scoliosis, kyphosis, or lordosis) including idiopathic scoliosis, neuromuscular scoliosis, and congenital scoliosis. Additionally, the CD Horizon™ Spinal System is intended to treat pediatric patients diagnosed with the following conditions: spondylolisthesis/spondylolysis, fracture caused by tumor and/or trauma, pseudarthrosis, and/or failed previous fusion. These devices are to be used with autograft and/or allograft. Pediatric pedicle screw fixation is limited to a posterior approach. The CD Horizon™ PEEK rods are intended to provide posterior supplemental fixation when used with an interbody fusion cage for patients diagnosed with DDD. These DDD patients may also have up to Grade 1 spondylolisthesis or retrolisthesis at the involved level. This device is intended for 1-2 level use in the lumbosacral spine (L2 — S1) in skeletally mature patients. The device is intended for use with an interbody fusion cage at the instrumented level and is not intended for stand-alone use. The CD Horizon™ Spire™ plate is a posterior, single-level, non-pedicle supplemental fixation device intended for use in the non-cervical spine (T1-S1) as an adjunct to fusion in skeletally mature patients. It is intended for plate fixation/attachment to spinous processes for the purpose of achieving supplemental fixation in the following conditions: DDD (as previously defined), spondylolisthesis, trauma, and/or tumor. To achieve additional levels of fixation, CD Horizon™ Spinal System rods may be connected to the Vertex™ Reconstruction System with the Vertex™ rod connector. Refer to the Vertex™ Reconstruction System package insert for a list of the Vertex™ indications of use. When used without cement, CD Horizon™ Fenestrated Screws (with or without Sextant™ or Longitude™ instrumentation) are intended for posterior, non-cervical fixation as an adjunct to fusion for the following indications: degenerative disc disease (DDD- defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies), spondylolisthesis, tumor and/or trauma (i.e. fracture or dislocation), spinal stenosis, curvatures (i.e. scoliosis, kyphosis, or lordosis), pseudarthrosis, and/or failed previous fusion. Additionally, CD Horizon™ Fenestrated Screws may be used for immobilization and stabilization when used for trauma (e.g. fracture or dislocation) with the usage of bone graft material left to the surgeon’s discretion. When used in conjunction with Medtronic HV-R™ Fenestrated Screw Cement or Kyphon™ Xpede™ Bone Cement, CD Horizon™ Fenestrated Screws are intended to restore the integrity of the spinal column even in the absence of fusion for a limited time in patients with advanced stage tumors involving the thoracic, lumbar, or sacral spine in whom life expectancy is of insufficient duration to permit achievement of fusion. CD Horizon™ Fenestrated Screws augmented with Medtronic HV-R™ Fenestrated Screw Cement or Kyphon™ Xpede™ Bone Cement are for use at spinal levels where the structural integrity of the spine is not severely compromised. When used as a pedicle screw fixation system of the non-cervical posterior spine in skeletally mature patients, the Colorado 2™ Spinal System is indicated for one or more of the following: (1) degenerative spondylolisthesis with objective evidence of neurologic impairment, (2) fracture, (3) dislocation, (4) scoliosis, (5) kyphosis, (6) spinal tumor, and/or (7) pseudarthrosis. In addition, when used as a pedicle screw fixation system, the Colorado 2™ Spinal System is indicated for skeletally mature patients: (1) having severe spondylolisthesis (Grades 3 and 4) of the fifth lumbar-first sacral (L5 S1) vertebral joint, (2) receiving fusions using autogenous bone graft only, (3) having the device fixed or attached to the lumbar and sacral spine (L3 and below), and (4) having the device removed after the development of a solid fusion mass. When used as a posterior, non-cervical, non-pedicle screw fixation system, the Colorado 2™ Spinal System is intended for the following indications: (1) degenerative disc disease (DDD - as defined by back pain of discogenic origin with degeneration of the disc confirmed by patient history and radiographic studies), (2) spinal stenosis, (3) spondylolisthesis, (4) spinal deformities (i.e. scoliosis, kyphosis, and/or lordosis), (5) fracture, (6) pseudarthrosis, and/or (7) tumor resection. When used as an anterolateral thoracic/lumbar system, the Colorado 2™ Spinal System is intended for the following indications: (1) DDD (as defined by back pain of discogenic origin with degeneration of the disc confirmed b patient history and radiographic studies), (2) spinal stenosis, (3) spondylolisthesis, (4) spinal deformities (i.e. scoliosis, kyphosis, and/or lordosis), (5) fracture, (6) pseudarthrosis, and/or (7) tumor resection. The GDLH™ Posterior Spinal System, when using TSRH™ variable angle screws, is intended only for patients (a) having severe spondylolisthesis (Grades 3 and 4) of the fifth lumbar-first sacral (LL5-S1) vertebral joint; (b) receiving fusions using autogenous bone graft only; (c) having the device fixed or attached to the lumbar and sacral spine: and (d) having the device removed after the development of a solid fusion mass. When properly used, this system is intended to assist stabilization until a solid spinal fusion develops. Except for situations where screws are attached to the pedicles of the lumbar and sacral spine via a posterior surgical approach in a GDLH™ construct for the treatment of severe spondylolisthesis (Grade 3 and Grade 4) at the L5-S1 vertebral joint, the specific indications for the GDLH™ Posterior Spinal System are the following: * Degenerative disc disease (DDD - as defined by instability in the presence of one or more of the following: osteophyte formation, decrease in disc space height, endplate sclerosis, disc herniations, facet joint changes, and scarring and/or thickening of the annulus fibrosis, ligamentum flavum, or facet joint capsule). = Pseudoarthrosis. = Stenosis. = Spondylolisthesis. = Spinal deformities such as scoliosis, kyphosis, and lordosis. = Fracture. = Unsuccessful previous attempts at spinal fusion. = Tumor resection. Nota bene: the GDLH™ Posterior Spinal System is limited to non-cervical use. TSRH™ variable angle when used with the GDLH™ Posterior Spinal System, are intended for sacral/iliac attachment only. GDLH™ hooks and Crosslink™ bars are intended for posterior thoracic and/or lumbar use only. When used as a pedicle screw fixation system of the non-cervical posterior spine in skeletally mature patients, the Colorado 2™ Spinal System is indicated for one or more of the following: (1) degenerative spondylolisthesis with objective evidence of neurologic impairment, (2) fracture, (3) dislocation, (4) scoliosis, (5) kyphosis, (6) spinal tumor, and/or (7) pseudarthrosis. In addition, when used as a pedicle screw fixation system, the Colorado 2™ Spinal System is indicated for skeletally mature patients: (1) having severe spondylolisthesis (Grades 3 and 4) of the fifth lumbar-first sacral (L5 S1) vertebral joint, (2) receiving fusions using autogenous bone graft only, (3) having the device fixed or attached to the lumbar and sacral spine (L3 and below), and (4) having the device removed after the development of a solid fusion mass. When used as a posterior, non-cervical, non-pedicle screw fixation system, the Colorado 2™ Spinal System is intended for the following indications: (1) degenerative disc disease (DDD - as defined by back pain of discogenic origin with degeneration of the disc confirmed by patient history and radiographic studies), (2) spinal stenosis, (3) spondylolisthesis, (4) spinal deformities (i.e. scoliosis, kyphosis, and/or lordosis), (5) fracture, (6) pseudarthrosis, and/or (7) tumor resection. When used as an anterolateral thoracic/lumbar system, the Colorado 2™ Spinal System is intended for the following indications: (1) DDD (as defined by back pain of discogenic origin with degeneration of the disc confirmed b patient history and radiographic studies), (2) spinal stenosis, (3) spondylolisthesis, (4) spinal deformities (i.e. scoliosis, kyphosis, and/or lordosis), (5) fracture, (6) pseudarthrosis, and/or (7) tumor resection. The Shilla™ Growth Guidance System is indicated for skeletally immature patients less than 10 years of age with the potential for additional spinal growth who require surgical treatment for correction and maintenance of the correction of severe, progressive, life-threatening early-onset deformities, including early-onset scoliosis, which are associated with or at risk of thoracic insufficiency syndrome. The Shilla™ Growth Guidance System is intended to be removed after skeletal maturity. The Tenor™ Spinal System, when used for pedicle screw fixation, is intended only for patients: (a) having severe spondylolisthesis (Grades 3 and 4) of the fifth lumbar — first sacral (L5-S1) vertebral joint; (b) receiving fusions using autogenous bone graft only; (c) having the device fixed to the lumbar and sacral spine (levels of pedicle screw fixation may be from L3 to sacrum); and (d) having the device removed after the development of a solid fusion mass. Note: Tenor™ Plates are intended for the L5-S1 pedicle screw indication only. The Tenor™ Spinal System, when used as a posterior, non-pedicle screw fixation system, is intended for the following indications: * Degenerative disc disease (DDD - as defined by back pain of discogenic origin with degeneration of the disc confirmed by patient history and radiographic studies). = Pseudarthrosis. = Stenosis. = Spondylolisthesis. = Spinal deformities such as scoliosis, kyphosis, and/or lordosis. = Fracture. = Tumor resection. When used for posterior non-pedicle screw fixation, the Tenor™ Spinal System is intended for thoracic, lumbar, and sacral (T1— Sacrum) fixation only.

Source page: https://510kreport.com/device/K221646
Methodology: https://510kreport.com/methodology