Medartis | Proximal Humerus System 3.5

Designed to perform.

Proximal humerus fractures require fixation strategies tailored to fracture pattern, bone quality, and the need for medial calcar support. The APTUS Proximal Humerus System provides reliable fixation and strength across a broad range of fracture patterns. An optional spiral blade provides additional calcar support when clinically required, offering reinforcement where it matters most. The plate is designed for distal placement on the greater tuberosity, to help reduce the risk of subacromial impingement.

Anatomical Design

Reduced impingement risk while preserving deltoid integrity through distal plate positioning and anatomical design.

Blades for Calcar Support

Spiral blade to enhance medial support in calcar region.

Drill Guide Blocks

Drill guide block for easy screw insertion of diverging screws.

One System Size 3.5

One screw diameter allows for reduced instrumentation.

PentaLock

PentaLock is a locking solution featuring a multidirectional, angular stable locking technology (thread-in-thread design).

Suture holes

Specially rounded edges of suture holes to facilitate easy suturing.

Construct stability

Load test results showed construct stability above (with blade) or comparable (without blade) to other established fixation systems. 

Surgical Options

When addressing a fracture pattern that requires additional medial support of the proximal humerus, the plate can be combined with the spiral blade 40° or the spiral blade 50°. These spiral blades provide additional calcar support to the plate-screw-construct in the medial bone tissue. In addition, the long plate (XL) types of the system enable the management of fracture patterns that extend to the humeral shaft.

3.5 PentaLock Proximal Humeral Plates

Highlights

The optional spiral blade enhances construct stability and provides targeted calcar support, helping to reduce the risk of screw cut-out.
Reduced risk of subacromial impingement through more distally plate positioning.
Reliable fixation supported by multidirectional screw placement and secured through the PentaLock thread-in-thread locking mechanism.
Due to its flat form, the spiral blade has a larger contact surface within the bone than a conventional screw.

Features

Pentalock

Rounded edges

Rounded edges for soft tissue protection

Drill guide block

Prevents screw collision and offers fast and precise screw placement

Preangled

Preangled screw holes facilitate less invasive plate placement and fixation

Screws

Locking
3.5 PentaLock Screws,
HexaDrive 15

Non-locking
3.5 Cortical Screws,
HexaDrive 15

The science behind.

Additional calcar support using a blade device reduces secondary varus displacement following reconstruction of the proximal humerus: a prospective study.
Beirer M, Crönlein M, Venjakob AJ, Saier T, Schmitt-Sody M, Huber-Wagner S, Biberthaler P, Kirchhoff C.

2015

Eur J Med Res.

This prospective study reports on 17 patients with a displaced fracture of the proximal humerus, treated with a APTUS Proximal Humeral Plate 3.5, either with the helical blade to support the calcar, or without it. Patients in this cohort achieved good functional results. The authors found that insertion of the blade significantly reduced the occurrence of seconday varus displacement compared to fixation with the polyaxial plate fixations alone.
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