# K161616: DePuy Synthes 4.0 mm and 4.5 mm Cortex Screws, DePuy Synthes 2.4 mm Cannulated Screws, DePuy Synthes 3.5 mm and 4.0 mm Cannulated Screws, DePuy Synthes 4.5 mm Cannulated Screws, DePuy Synthes 6.5 mm Cannulated Screws, DePuy Synthes 7.0 mm and 7.3 mm Cannulated Screws, DePuy Synthes 1.5 mm Headless Compression Screws, DePuy Synthes 2.4 mm Headless Compression Screws, DePuy Synthes 3.0 mm Headless Compression Screws, DePuy Synthes 4.5 mm and 6.5 mm Headless Compression Screw

- Pathway: 510(k) (Traditional)
- Applicant: Synthes USA Products, LLC
- Decided: Feb 16, 2017 after 248 days
- Product code: HWC (Screw, Fixation, Bone)
- Device class: 2
- Regulation: 21 CFR 888.3040
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 11 generations back to K962616 (1996). 93 ancestors in all.
33 later devices descend from it; 18 cite it directly.
0 of 127 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K112583: Synthes Cortical Screws, Synthes (USA) Products, LLC (2011) Summary page 14.
- K012945: Synthes 2.4 MM Cannulated Screw, Synthes (Usa) (2001) Summary page 14.
- K963192: Synthes Sterile 3.5 MM and 4.0 MM Cannulated Screws, Synthes (Usa) (1996) Summary page 14.
- K963172: Synthes Sterile 4.5 MM Cannulated Screws, Synthes (Usa) (1996) Summary page 14.
- K021932: Synthes 6.5 MM Cannulated Screw, Synthes (Usa) (2002) Summary page 14.
- K962011: Synthes 7.0/7.3 MM Cannulated Screws, Synthes (Usa) (1996) Summary page 14.
- K090949: Synthes (Usa) 1.5MM Headless Compression Screws, Synthes (Usa) (2009) Summary page 14.
- K050636: Synthes 3.0MM Headless Compression Screws, Synthes (Usa) (2005) Summary page 14.
- K080943: Synthes 4.5 MM and 6.5 MM Headless Compression Screws, Synthes (Usa) (2008) Summary page 14.
- K021556: Synthes 2.4 MM Cannulated Compression Screw, Synthes (Usa) (2002) Summary page 15.

## Most influential descendants
- K193660: OSSIOfiber™ Compression Screws (2020), 6 descendants of its own
- K192745: DePuy Synthes Trauma Screws (2019), 5 descendants of its own
- K221193: OSSIOfiber Compression Screw, OSSIOfiber Compression Screw, 6.5mm (2022), 4 descendants of its own
- K213596: OSSIOfiber Compression Screw, 3.5mm (2021), 4 descendants of its own
- K231272: OSSIOfiber® Pin Product Family, OSSIOfiber® Compression Screw, OSSIOfiber® Trimmable Fixation Nail (2023), 3 descendants of its own

## Indications for use
The DePuy Synthes 2.4 mm Cannulated Screws are intended for fixation of fractures, fusions, osteotomies, non-unions, and malunions of small bones in adults and in both children (2-12 years) and adolescents (12-21 years) in which growth plates have fused or in which growth plates will not be crossed by screw fixation. The DePuy Synthes 4.0 mm Cortex Screws are intended for fixation of fractures, fusions, osteotomies, non-unions, and malunions of the clavicle, scapula, olecranon, humerus, radius, ulna, pelvis, tibia, calcaneus, femur, fibula, and the bones of the foot and hand in adults and in both children (2-12 years) and adolescents (12-21 years) in which growth plates have fused or in which growth plates will not be crossed by screw fixation. The DePuy Synthes 4.5 mm Cortex Screws are intended for fixation of fractures, fusion, osteotomies, non-unions, and malunions of various long bones, such as the humerus, femur and tibia; the pelvis, and the bones of the foot and hand in adults and in both children (2-12 years) and adolescents (12-21 years) in which growth plates have fused or in which growth plates will not be crossed by screw fixation. The DePuy Synthes 3.5 mm and 4.0 mm Cannulated Screws are intended for fixation of fractures, fusions, osteotomies, non-unions, and malunions of small bones and small bone fragments in adults and in both children (2-12 years) and adolescents (12-21 years) in which growth plates have fused or in which growth plates will not be crossed by screw fixation. The DePuy Synthes 4.5 mm Cannulated Screws are intended for fixation of fractures, fusions, osteotomies, non-unions, and malunions of long bones and long bone fragments; and the bones of the hand and foot, in adults and in both children (2-12 years) and adolescents (12-21 years) in which growth plates have fused or in which growth plates will not be crossed by screw fixation. The DePuy Synthes 6.5 mm Cannulated Screws are intended for fixation of fractures, fusions, osteotomies, non-unions, and malunions of long bones and long bone fragments, pelvis, sacrum, and the bones of the foot in adults and in both children (2-12 years) and adolescents (12-21 years) in which growth plates have fused or in which growth plates will not be crossed by screw fixation. These screws are also indicated for femoral neck fractures; slipped capital femoral epiphysis; an adjunct to DHS in basilar neck fractures; tibial plateau fractures; ankle arthrodesis; pediatric femoral neck fractures; intercondylar femur fractures; SI joint disruptions; and subtalar arthrodesis. The DePuy Synthes 7.0 mm and 7.3 mm Cannulated Screws are intended for fixation of fractures, fusions, osteotomies, non-unions, and malunions of long bones and long bone fragments, pelvis, sacrum, and the bones of the foot in adults and in both children (2-12 years) and adolescents (12-21 years) in which growth plates have fused or in which growth plates will not be crossed by screw fixation. These screws are also indicated for slipped capital femoral epiphysis; ankle arthrodesis; and subtalar arthrodesis. The DePuy Synthes 1.5 mm Headless Compression Screws are intended for fixation of intra-articular and extra-articular fractures, avulsions, non-unions, malunions, and osteotomies of small bones and small bone fragments, as well as arthrodesis of small joints in adults and in both children (2-12 years) and adolescents (12-21 years) in which growth plates have fused or in which growth plates will not be crossed by screw fixation. The DePuy Synthes 2.4 mm Headless Compression Screws are intended for fixation of fractures, osteotomies, non-unions, and malunions of small bones and small bone arthrodesis in adults and in both children (2-12 years) and adolescents (12-21 years) in which growth plates have fused or in which growth plates will not be crossed by screw fixation. The DePuy Synthes 3.0 mm Headless Compression Screws are intended for fixation of intra-articular and extra-articular fractures, non-unions, malunions, and osteotomies of small bones and small bone fragments, as well as arthrodesis of small joints in adults and in both children (2-12 years) and adolescents (12-21 years) in which growth plates have fused or in which growth plates will not be crossed by screw fixation. The DePuy Synthes 4.5 mm and 6.5 mm Headless Compression Screws are indicated for fixation of fractures, fusions, osteotomies, non-unions, and malunions of various bones and bone fragments including bones of the foot, humerus, femur and tibia in adults and in both children (2-12 years) and adolescents (12-21 years) in which growth plates have fused or in which growth plates will not be crossed by screw fixation.

Source page: https://510kreport.com/device/K161616
Methodology: https://510kreport.com/methodology