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About this product

Division: International
Category: Nailing Systems

With the MULTILOC™ Humeral Nailing System, DePuy Synthes opens up new opportunities for the treatment of humeral fractures. The modular implant system, consisting of a short and long nail with multiple locking options, covers a wide application range to address simple and complex fractures. The straight nail design and innovative screw concept enable customizable solutions for the individual patient.

System overview

  • Straight nail design for central insertion point:
    • Improved anchorage in strong subchondral bone 1
    • Potentially avoiding insertion through fracture site in typical 3-part fractures 1,2
    • Preservation of hypovascular supraspinatus footprint
  • Innovative screw design
    • Blunt screw tip to reduce the risk of secondary perforation
    • Suture holes to enable reliable attachment of the rotator cuff
    • Countersunk screw heads to reduce the risk of impingement
    • Optional secondary 3.5 mm locking screw (screw-in-screw)
  • Proximal locking holes with polyethylene inlay for angular stability and to reduce instances of screw back-out

 

References

1Stedtfeld HW, Mittlmeier T. "Fixation of Proximal Humeral Fractures with an Intramedullary Nail: Tips and Tricks." Eur J Trauma Emerg Surg 33(2007): 367– 374.
2 Rueger JM, Rücker A, Briem D, Grossterlinden L, Linhart W. "Proximal Humeral Fractures: Nailing." Eur J Trauma Emerg Surg 33(2007): 357– 366.

 

Intended Use

For full information on indications, contraindications, warnings and precautions please see the product specific IFU and surgical technique 036.001.247.

 


 

Features & Benefits

Category

  Features Benefits

Screw-in-screw for improved fixation in osteoporotic bone

Unique and innovative screw-in-screw technology permits a more specific treatment of proximal humeral fractures. 3.5 mm locking screws inserted through the heads of MultiLoc screws target the posteromedial region with strong bone mineral density (BMD) 4,3, reducing instances of varus collapse and providing improved fixation in osteoporotic bone 5,4.

Ascending screw provides medial support

Medial support enhances the stability of the osteosynthesis and allows for a more secure fixation of proximal humeral fractures 5, especially medially comminuted (varus-type) fractures.

Bicortical compression increases fracture stability

Bicortical compression is an innovative and easy-to-handle feature of the MultiLoc Humeral Nail (long), improving rotational stability in transverse and short oblique fractures to support bone union. A locking screw is inserted bicortically and safely below the axillary nerve. The simple and reliable mechanism holds compression intraoperatively, prior to insertion of additional screws in the proximal fragment.

Multiplanar distal locking in safe zone

Multiplanar distal locking reduces implant toggling in proximal humeral nailing. The MULTILOC Humeral Nail (long) includes safe and easily identifable distal locking planes respecting neurovascular structures.

Smart instrumentation enables a straight-forward procedure

Intelligently designed instrumentation simplifes procedures and saves valuable OR time: color coding leads the way for less searching and easy assembly; self-holding mechanisms facilitate handling of sleeves and screwdrivers; while innovative flippable aiming arms reduce inventory and costs.

References

3Lill H, Hepp P, Gowin W, Oestmann JW, Korner J, Haas NP, Josten C, Duda GN. "Age- and gender-related distribution of bone mineral density and mechanical properties of the proximal humerus." [Article in German] Rofo 174(12)(2002): 1544 –1550.
4 Schiuma D, Plecko M, Kloub M, Rothstock S, Windolf M, Gueorguiev B. "Infl uence of peri-implant bone quality on implant stability." Med Eng Phys.2012.
5 Rothstock S, Plecko M, Kloub M, Schiuma D, Windolf M, Gueorguiev B. "Biomechanical evaluation of two intramedullary nailing techniques with different locking options in a three-part fracture proximal humerus model." Clin Biomech (Bristol, Avon) (3)(2012). [Epub ahead of print] doi:10.1016/ j.clinbiomech.2012.03.003.

Videos & Animations

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Please refer to the surgical technique guide or package inserts if included for a complete list of indications, contraindications, precautions and warnings. For further information on DePuy Synthes Products, please contact your local DePuy Synthes Representative .
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