Precision you can trust a million times over.

The Distal Radius Story.

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The voice of the customer.

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The science

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The Distal Radius Story.

Trusted Solution for Distal Radius Fixation

Precision you can trust a million times over: The Medartis Distal Radius System 2.5 has proven to be a highly valued solution for distal radius osteosynthesis. Developed in close collaboration with renowned surgeons, the products are well-established in the markets since the system's launch in 2005. With a Medartis Distal Radius plate sold every 4.6 minutes*, it’s easy to see why we are the first choice for surgeons and patients worldwide.

*Based on 2022 global sales volume

A Truly Global Solution With Distribution In Over 40 Countries and 94 Plate Solutions

Our product is successfully distributed in over 40 countries, making it a truly global solution for distal radius osteosynthesis. With a portfolio of 94 different radius plates, Medartis offers solutions for almost every clinical problem.

100% Swiss Made Quality 

Precision in Fixation is our claim. Medartis’ DNA is Swiss and the company stands for competitive Swiss quality. Its headquarters, research and development, and manufacturing facilities are all located under one roof in Basel, Switzerland. From the production process to the finished product, every step is carefully monitored and tested to ensure the highest quality standards are met. To date, more than 7 million screws have been produced for the treatment of distal radius fractures.

The Distal Radius Story.


TriLock: The first multidirectional and angular stable locking system was invented. The technology is still unique on the market and enables friction locking through radial bracing of the screw head in the plate without additional tensioning components.

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Launch of our first Distal Radius System 2.5. Offering solutions for the volar and dorsal approach with low profile and multidirectional angular stability. 

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Introducing dorsal frame plates for complex fracture fixation. These plates provide exceptional buttressing of the RCJ and DRUJ through converging screw placement. 

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Introducing the next generation of distal radius plates: Evaluated on 250 cadaver bones featuring ADAPTIVE II - one of the most used plate designs - and the innovative FPL plate design offering reduced contact pressure on the flexor pollicis longus tendon.

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Introducing solutions for highly complex distal radius fractures. The two innovative spanning plate options allow different fracture patterns and the varying surgical preferences of surgeons to be easily addressed. The straight plate is designed for placement over the second metacarpal while the anatomically curved plates are optimized for placement over the third metacarpal. 

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Launch of the CMX Wrist and Forearm & 3D Planning Tool. CMX Wrist and Forearm offers custom made devices such as surgical guides and 3D bone models as part of the CMX service.

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Celebrating our milestone with the sale of the one millionth distal radius plate.

The voice of the customer.

Distal Radius System 2.5 - How did it begin?

Check out this exclusive interview with Prof. Hermann Krimmer, hand and microsurgery specialist and design surgeon working with the Medartis team on developing the Distal Radius System 2.5. Along with Matthias Walter, from the R&D team, they reflect on the collaboration, ideas behind the polyaxial osteosynthesis system and the development of the project.

Simple and comprehensive! 

Nicolina Mangano works as Head of the hospital reprocessing unit for medical devices, has over 30 years professional experience and holds the responsibility for ensuring the sterile supply of medical devices within the facility. When multiple surgeries are scheduled on the same day, efficient reprocessing of instrument sets becomes crucial to ensure smooth operations and enable the surgical team to work effectively. The guiding principle is to have the right implants available in the correct OR room at the designated time. Thanks to a well-coordinated team of surgeons, anesthetists, nurses, and various other specialists, the hospital is well-prepared for unforeseen emergencies. To keep up with the fast-moving environment, simplicity and comprehensiveness are key requirements for orthopaedic sets. "The Medartis APTUS set is kept small, it is very clear and can be reprocessed fairly quickly," explains Nicolina Mangano.

One millionth Distal Radius Plate

Watch our exclusive interview with Dr. Markus Rau, the renowned Head Physician of the Clinic for Surgery and Head of Hand Surgery at Kantonsspital Schaffhausen and join us as we celebrate the Medartis milestone achievement of selling the one millionth distal radius plate. Hear first-hand Dr. Rau’s experiences and learn more about the key factors contributing to his long-term success with Medartis distal radius implants. Don’t miss this unique opportunity to learn from a true expert in the field as he shares his knowledge and expertise on this successful medical technology.

The science behind.

Medartis Distal Radius System 2.5 clinical literature review.

The Medartis APTUS conventional volar plates include the Fracture, Correction, ADAPTIVE, and ADAPTIVE II plates. The outcomes associated with use of these plates in distal radius volar fracture fixation were documented in five studies comprising 1,041 cases. 

Quadlbauer et al. conducted a retrospective follow-up study of 230 distal radius fracture patients fixed with Medartis implants, dominantly correction plates. At a minimum follow-up of one year (mean, 20 months) patients returned for a follow-up investigation visit of functional, clinical and radiological outcomes. The average VAS pain score was 0.41, average range of motion of 150.0° in extension/flexion, 179.9° in pronation/supination and 52.2° in radial/ulnar deviation, grip strength of 91% of the uninjured hand, an average QuickDASH score of 11.2 points and average Patient-Rated Wrist Evaluation (PWRE) score of 9.5 points. The overall complication rate was 13.0% with 6.1% being attributable to the implant: four patients with screws placed into the distal radioulnar joint, three cases of loss of reduction, three cases with dorsally protruding screws, two cases of tendon irritation, and two cases of transient hyposensitivity. The authors conclude that this “is a safe form of treatment and results in a good clinical and radiological outcome with low complication rate.” 

Dardas et al. performed a prospective cohort study of unicortical screw fixation across 75 distal radius fractures treated with volar plate fixation at a single tertiary center. The investigators drilled to but not through the dorsal cortex and placed a screw at least 2 mm short of the dorsal cortex. Seventy-three Medartis volar plates and two DePuy Synthes plates were utilized. Two patients (2.7%) with > 30 pack-year smoking history encountered a loss of reduction, which was comparable to other studies. No extensor tenosynovitis or extensor tendon ruptures were observed. This patient series demonstrated that the Medartis Distal Radius System provides sufficient fixation of distal radius fractures with unicortical distal screw placement “while potentially minimizing the incidence of extensor tendon ruptures.” 

Esenwein et al. conducted a retrospective review of 665 unilateral distal radius fractures treated with Medartis volar plating at their institution from January 2004 to December 2009, finding an overall complication rate of 11.3%. Median nerve compression was most common (n=22, 3.3%) followed by nine cases of complex regional pain syndrome, 1.4%. Implant-related complications were limited to 9 cases of secondary dislocation (1.4%), 8 cases of ulnar impingement (1.3%), 3 cases in intraarticular screw placement (0.5%), 3 cases of hardware failure (0.5%) and three cases each of flexor or extensor tendon ruptures (0.5% each). 

Häberle et al.’s 2015 prospective randomized trial demonstrated that Medartis 2.5 volar plates could be used with or without repair of the pronator quadratus with all 60 patients (57 Medartis, 3 DePuy Synthes) achieving union and a VAS pain score of 0, 1, or 2 by 12 weeks. Repair of the pronator quadratus resulted in a greater proportion of patients with pain scores ≤ 2 at 6 weeks (84% with repair, 62% without repair, p = 0.017). 

Tokunaga and Abe’s 2017 prospective study of FPL tendon damage upon elective implant removal in asymptomatic distal radius fracture patients compared 16 patients with Acumed Acu-Loc plates versus 16 patients with Medartis APTUS Correction plates. Patient characteristics were similar, with the exception of AO classification, where more AO Type C fractures were treated with Medartis plates (A: 1; B: 1; C: 14) versus Acu-Loc plates (A: 6; B: 2; C: 8). No differences in sonographic findings were observed between the two plate groups; however, five cases of tendon erosion were noted in the Acu-Loc group versus none in the Medartis APTUS group (p=0.04). No tendon ruptures were noted at the average follow-up of 239 days. 


Dardas AZ, Goldfarb GC, Boyer MI, Osei DA, Dy CJ, Calfee RP. A prospective observational assessment of unicortical distal screw placement during volar plate fixation of distal radius fractures. J Hand Surg Am. 2018; 43(5)448-454 

Esenwein P, Sonderegger J, Gruenert J, Ellenrieder B, Tawfik J, Jakubietz. Complications following palmer plate fixation of distal radius fractures: a review of 665 cases. Arch Orthop trauma Surg. 2013; 133:1155-1162 

Häberle S, Sandmann GH, Deiler S, Kraus TM, Fensky F, Torsiglieri T, Rondak IC, Biberthaler P, Stöckle U, Siebenlist S. Pronator quadratus repair after volar plating of distal radius fractures or not? Results of a prospective randomized trial. Eur J Med Res. 2015; 20:93 

Tokunaga S, Abe Y. Asymptomatic flexor tendon damages after volar locking plate fixation in distal radius fractures. J Hand Surg Asian-Pacific Vol. 2017; 22(1):75-82 

Quadlbauer S, Pezzei C, Jurkowitsch J, Rosenauer R, Pichler A, Schättin S, Hausner T, Leixnering M. Functional and radiological outcome of distal radius fractures stabilized by volar-locking plate with a minimum follow-up of 1 year. Arch Orthop Rauma Surg. 2020; 140:843-852 

The Medartis APTUS Distal Radius System includes specific plate designs intended to enable distal plate placement and capture of rim fragments. These include the FPL plate with central channel to accommodate passage of the FPL tendon, the 0.6 mm thick hook plates that can be used independently or in combination with a volar or dorsal plate, the volar rim plate with integrated 0.6 mm distal flaps that accept 1.5 mm screws or sutures, the lunate facet plate that specifically buttresses the volar lunate facet and captures distal fragments with hooks, and small fragment plates that can be used in combination with the previous options for fragment-specific fixation. These specialized plates were evaluated in 142 patients across five peer-reviewed publications. 

Biondi et al. retrospectively reviewed their first 23 cases of articular fracture with use of the hook plates in 2019. According to Medoff’s classification of articular involvement, nine patients involved all five fragments, one patient presented with four fragments, six patients with three fragments each, five patients with two fragments, and two patients with a single fragment. The plates were used in combination with either independent screws or with a volar plate, dorsal plate, or both a volar and dorsal plate. At a mean follow-up of 21 months, patients achieved a VAS pain score of 1.1, DASH of 13.5, and PRWE of 9.3. No complications related to the hook plates were observed, and all patients achieved union. No hardware failures were noted. 

Biondi et al.’s 2021 retrospective study described their fragment-specific fixation approach to volar rim fractures with the APTUS wrist system. In 68 patients with at least 12 months of follow-up (mean: 34 months), they utilized hook plates in 20 patients, double hook plates in 19 patients, the lunate facet plate in 18 patients and the volar rim plate in 11 patients. Intraoperative photos instructive for placement of each of these rim plates were presented. Despite the distal placement of hardware, no patients required hardware removal and no tendon ruptures were encountered. Patients achieved a grip strength of 86% contralateral, DASH score of 6.6, PRWE score of 3, and VAS pain score of 1.8. No loss of reduction or hardware failures were observed. The authors conclude “APTUS wrist presents a versatile set of fragment specific fixation plates able to easily and securely fix all types of volar rim fracture. The system can be used with other devices without any kind of interference between them.” 

The interaction of the FPL tendon and the Medartis FPL Volar plate have been documented by three independent research groups. Each group used ultrasound to demonstrate that the notch reduced plate-tendon contact. Kaiser et al. and Schlickum et al. each provided guidance on preferred radial-ulna positioning of the plate based upon their findings. Stepan et al. conducted a matched-cohort follow-up study of 20 patients each that were treated with either the Medartis ADAPTIVE II volar watershed plate or the Medartis FPL volar plate. Sonographic parameters were evaluated with the wrist in neutral position and 45° wrist extension. The FPL plate demonstrated a significant reduction in the percentage of tendon-plate contact with the wrist in either neutral (13% vs. 33%, p<0.001) or 45° extension (15% vs. 36.5%, p<0.001); however, the absolute measures of tendon-plate contact were not statistically different, nor was the rate of sonographic changes in the FPL tendon. No FPL tendon ruptures were detected within the study, nor were any fracture plates removed. Stepan et al. conclude “We found that the FPL volar locking plate and decreased volar tilt significantly reduced the plate-tendon contact area compared with the standard volar locking plate. In our asymptomatic cohort, we were unable to find a difference in sonographic changes in the FPL tendon.” 



Biondi M, Keller M, Merenghi L, Gabl M, Lauri G. Hook plate for volar rim fractures of the distal radius: review of the first 23 cases and focus on dorsal radiocarpal dislocation. J Wrist Surg. 2019; 8:93-99 

Biondi M, Poggetti A, Fagetti A, Di Maro A, Bigazzi P, Pfanner S, Lauri G. Fragment specific fixation with APTUS wrist system for volar rim fractures of the distal radius: a multicentric study. Eur J Trauma and Em Surg. 2021 doi: 10.1007/s00068-021-01710-3 

Kaiser P, Gruber H, Loth F, Schmidle G, Arora R, Gabl M. Positioning of a volar locking plate with a central flexor pollicis longus tendon notch in distal radius fractures. J Wrist Surg. 2019; 8:482-488 

Schlickum L, Quadlbauer S, Pezzei C, Stöphasius E, Hausner T, Leixnering M. Three-dimensional kinematics of the flexor pollicis longus tendon in relation to the position of the FPL plate and distal radius width. Arch Orthop Trauma Surg. 2019; 139(2):269-279 

Stepan JG, Marshall DC, Wessel LE, Endo, Y, Miller TT, Sacks HA, Weiland AJ, Fufa DT. The effect of plate design on the flexor pollicis longus tendon after volar locked plating of distal radial fractures. J Bone Joint Surg Am. 2019; 101:1586-1592 

The Medartis APTUS Distal Radius System includes dorsal plating options for those fractures that are best treated from a dorsal approach. Outcomes for 240 patients were documented across two studies.

Sagerfors et al. evaluated functional outcomes in combined dorsal and volar plating with Medartis Frame Plates in their 2020 publication of 74 cases of complex intra-articular distal radius fractures. The authors found one-year functional outcomes of pronation and supination at 94% the contralateral limb, flexion at 74%, extension at 76%, grip strength at 82%, median VAS pain of 0 at rest and 2 during activity and a PRWE score of 18 and a QuickDASH score of 14.8. Hardware was removed in 21 (28%) of patients for wrist pain or extensor tenosynovitis and two patients with infection resolved with antibiotic treatment alone. No cases of tendon rupture or complex regional pain syndrome were encountered by 1 year. The authors conclude that combined volar and dorsal plating “can yield a good functional and radiographic short-term outcome in patients with AO type C intra-articular distal radial fractures.” 

Ghafoor et al. demonstrated detailed radiographic outcomes in a single-center retrospective series of 166 patients with both simple and complex fractures (AO type: A, 79; B, 9; C, 78) treated with the Medartis Dorsal Plates. Two tendon ruptures were noted (1.2%), one of which was iatrogenic during the initial surgery, and the second was observed during a planned plate removal. One loss of reduction in the intermediate column was observed in an AO type C2 fracture. The authors noted a total of 15 minor clinical complications (9.0%). The authors conclude “Dorsal plating of distal radius fractures is safe and remains an important approach in the treatment of complex distal radius fractures. Complications in our study were even less compared to those reported in the literature.” 


Ghafoor H, Haefeli M, Steiger R, Honigmann P. Dorsal plate osteosynthesis in simple and complex fractures of the distal radius: a radiological analysis of 166 cases. J Wrist Surg. 2022; 11:134-144 

Sagerfors M, Lundqvist E, Bjorling P. Combined plating of intra-articular distal radius fractures, a consecutive series of 74 cases. J Wrist Surg. 2020; 9(5):388-395 

Medartis provides implant plus instrument solutions for malunited distal radius fractures via corrective osteotomies of both the radius and the ulna. Correction of volar tilt of the radius can be restored using a dedicated instrument with either the Correction Plate and ADAPTIVE II plates. Krimmer et al. describe the technique with intra-operative images and fluoroscopy in his 2020 technique paper. Terzis et al. described symptomatic ulnar impaction syndrome, its relevant classifications, treatment algorithm, and techniques for ulna shortening osteotomy along with outcomes of a retrospective series of 32 ulna shortening osteotomy patients. In this series, 100% of patients achieved bony union with six hardware removals (18.7%). Statistically-significant improvements in flexion/extension ROM, ulnar/radial deviation, grip strength, VAS pain score (average 7.7 reduced to 1.7) and DASH score (50.2 to 27.8) were observed. Pronation/supination was reduced to an average of 129.3° versus a preoperative 145.0° arc. Terzis et al. conclude “A modern, low profile, locking plate showed in our short-term study very good functional results and no implant-associated complications, in particular no non-union.” 


Terzis A, Koehler S, Sebald J, Sauerbier M. Ulnar shortening osteotomy as a treatment of symptomatic ulnar impaction syndrome after malunited distal radius fractures. Arch Orthop Trauma Surg. 2020; 140(5):681-695 

Krimmer H, Schandl R, Wolters R. Corrective osteotomy after malunited distal radius fractures. Arch Orthop Trauma Surg. 2020; 140:675-680 


The Medartis Distal Radius System’s arthrodesis options include total wrist fusion, carpometacarpal-sparing wrist fusion, and radioscapholunate dorsal and volar plating solutions. 

Hernekamp et al. conducted a retrospective comparison of wrist arthrodesis using either a DePuy Synthes LCP plate that bridges to the 3rd metacarpal or the carpometacarpal-sparing APTUS Wrist Fusion plate. Ten patients were included in each group. Similar functional outcomes and patient-related outcomes were observed. One plate removal was performed in each group. The APTUS plate was removed for radial nerve irritation, and a second patient had a nonunion, which was revised with the conventional AO technique of spanning to the 3rd metacarpal. The third carpometacarpal joint preservation resulted in an increase in CMCJ-3 mobility versus the non-operative side, and continuous preservation of the CMCJ-3 joint obviates removal and prevents pain upon removal, which was encountered upon removal of the DePuy Synthes plate. The authors conclude “The new implant shows similar functional results compared to the standard procedure. The main advantage of the new implant is the fact that no implant removal is necessary due to the unaffected CMCJ-3. Furthermore the mobility of the CMCJ slightly increased and showed positive impact on hand kinematics.” 

Quadlbauer et al. described functional- and patient-related outcomes after radioscapholunate (RSL) arthrodesis with a volar plate with distal scaphoidectomy. Eleven patients were included, and all achieved bony union. Final VAS pain was 2.2, 80% grip strength vs. healthy side, DASH of 27 points, and PRWE of 31 points. Range of motion increased in extension, extension/flexion, and supination after the arthrodesis procedure. Degeneration of the midcarpal joint was not observed at a mean follow-up of 63 months (minimum of 30 months). Asymptomatic radiological degeneration was observed at the radioulnar joint; however, pain was not encountered and secondary procedures were not necessary. Radioscapholunate arthrodesis can be performed through a volar approach to revise malunited distal radius fractures, utilizing the same incision as required for plate removal. The authors conclude “Volar angular stable plate RSL arthrodesis with resection of the distal scaphoid pole is a safe and effective method for treating malunited DRF. This leads to an improved ROM and low pain level” 


Hernekamp JF, Schonle P, Kremer T, Kneser U, Bickert B. Low-profile locking-plate vs. the conventional AO system: early comparative results in wrist arthrodesis. Arch Orthop Truama Surg. 2020 140:433-439 

Quadlbauer S, Leixnering M, Jurkowitsch J, Hausner T, Pezzei C. Volar radioscapholunate arthrodesis and distal scaphoidectomy after malunited distal radius fractures. J Hand Surg Am. 2017; 42(9):754 

Media Highlights

Animated Surgical Procedure - 2.5 Adaptive II TriLock Distal Radius Plate and 1.5 Hook Plate

APTUS Wrist Spanning Plates 2.5 by Medartis

Treatment of a distal radius fracture with a volar rim fragment

APTUS Wrist FPL Plate Surgical Technique

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