# K984378: Depuy Acromed Moss Spinal System

- Pathway: 510(k) (Traditional)
- Applicant: Depuy, Inc.
- Decided: Dec 30, 1998 after 23 days
- Product code: MNI (Orthosis, Spinal Pedicle Fixation)
- 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
No predicates in its family tree.
2 later devices descend from it; 2 cite it directly.
0 of 3 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. The FDA summary names its predicate without a number.
- (no number) DePuy Motech MOSS Spinal System - Pedicle Fixation: named in the summary without a submission number
- (no number) DePuy Motech Universal Spinal System and Transverse Rod Stabilizer: named in the summary without a submission number

## Most influential descendants
- K191212: CrossOver Cross Connectors, DePuy PULSE Thoracolumbar Screw System, EXPEDIUM Fenestrated Screw System, EXPEDIUM SFX Cross Connectors, EXPEDIUM Spine System, EXPEDIUM VERSE Spine System, E-Z Link Cross Connectors, ISOLA Spine System, MONARCH Spine System, MOSS MIAMI Spine System, TiMX Low Back System, VIPER Fenestrated Screw System, VIPER PRIME System, VIPER PRIME Fenestrated Screws, VIPER SAI (Sacral-Alar-Iliac), VIPER System, VIPER 2 System, VSP Spine System (2019), 0 descendants of its own
- K021275: Micomed Posterior Doublerod System (2002), 0 descendants of its own

## Indications for use
When used as an anterior, thoracic/lumbar screw fixation system, the MOSS Spinal System is intended to treat scoliosis, kyphosis and lordosis, fracture, loss of stability due to tumor, spinal stenosis, spondylolisthesis, a previously failed fusion surgery or degenerative disc diseass (i.e. discogenic back pain with degeneration of the disc confirmed by patient history and radiographic studies). When used as a pedicle screw fixation system of the noncervical spine in skeletally mature patients, the MOSS Spinal System is indicated for degenerative spondylolisthesis with objective evidence of neurologic impairment, fracture, dislocation, scoliosis, kyphosis, spinal tumor, and failed previous fusion (pseudarthrosis). The MOSS Spinal System is also indicated for pedicle screw fixation in skeletally mature patients with severe spondylolisthesis (Grades 3 and 4) at the L5-S1 vertebral joint, having fusions with autogenous bone graft, with the device fixed or attached to the lumbar and sactal spine (levels of pedicle screw fixation are L3 and below), and for whom the device system is intended to be removed after the development of a solid fusion mass.

Source page: https://510kreport.com/device/K984378
Methodology: https://510kreport.com/methodology