Introduction:

90 cases of reversed prosthesis have been evaluated and the aim of the retrospective multicenter study was to correlate the functional and radiological results depending on the type of implant.

Introduction:

Tuberosity healing is strongly correlated with functional results in all series of three- and four-part fractures of the proximal humerus treated by hemiarthroplasty. We formed a working group to improve position of the implant and fixation of the tuberosities on an implant specifically intended for traumatology.

Purpose of the study: Volar plate fixation is becoming increasingly popular for instable fractures of the distal radius or on porotic bone. We report our experience and unavoidable or predictable complications with this type of fixation.

Material and methods: The 142 patients who underwent surgery from 2006 to 208 were reviewed and followed prospectively. In 2006 and 200, three types of volar plates were implanted: the Ace Depuy (standard), the T or DRP (Synthes), prolock with locking screws, (ITS) with a series of 104 patients. In 2008, two types of new generation plates with a more anatomic design were used: Variax (Stryker) and Newclip with a series of 48 patients. Complications were noted with minimum four months follow-up.

Results: All fractures healed. The Herzberg score reached 81/100 and the DASH 19.4. The complication rate was 19% (n=19) for the older generation plates and 15% (n=7) for the new anatomic plates. The main complications were tears of the long flexor and long extensor pollicis tendons (two before 2008 and four after 2008), reflex dystrophy (five before 2008 and two after), carpal tunnel syndrome (n=4), and material problems (dislodged screw, protruding screw) with no functional consequences (six before 2008 and one after).

Discussion: The increasing popularity of plate fixation for distal radius fractures generates an increase in complications. These are predictable if the material protrudes (tendon tears caused by overly long screws). Three published series on these specific complications (Rozental 2006, Rampoldi and Arora 2007) found that these problems could be avoided, both by implant design and by surgical technique. Locking the epiphyseal screws requires insertion into the subchondral bone and thus distal implantation of the plates, generating an iatrogenic conflict for the flexors. The rediscovery of the anatomy of the distal radius should help avoid styloid problems, and reconsideration of plate design to avoid advancement both on the ulnar side and the radial side. While the extra-articular volar plates fulfil the same function as pinning (Obert 2006), plates have lower indirect costs than pinning + plaster cast (Candelier 2006). Conversely, there is still no proof of the superiority of locked screws over standard screws.

Introduction: Occult fractures of carpal bones are underestimed. To be treated succesfully fractures of the scaphoid must be identified at an early stage. A delay in detection may result in non union. We validated with 3 prospective studies a new tool using scintigraphy : The quantitative Xray bone scan (QRS)

Material and Methods: A previous preliminary prospective study with 60 patients was performed and published to valid the QRS as a step in diagnosis of wrist occult bones fractures equal to RMI. This exam is a bone scan with 2 improvments.

1) A quantification of the fixation spot : If the spot is two times more important on the injuried wrist (than controlateral side) the fracture is sure.

Result: Between november 97 and march 04, 667 patients were enrolled in a prospective continue study. 40% (260/667) of patients with an injury of the wrist with normal X ray sustained an occult fracture. QRS was performed at an average of 17,7 days after the injury and after clinical exam and repeat set of scaphoid view. Scaphoid fractures were most frequent. Fixation was most important if scintigraphy was performed between 11 and 20 days after the injury. Fixation did not depend on age, sex, volume of the bone, and delay (after 15 days).

Discussion: As Dikson, Dias, Thompson, and Kuckla, repeat set of scaphoid view are unable to improve significativally the number of occult fractures of the wrist. RMI as reported by Kuckla can reduce the need for further imaging procedure. RMI and scintigraphy are both the best exam to diagnose surely an occult fracture of the wrist. But QRS does not over diagnose, as RMI, bones fracture’s.

Conclusion: “Plaster cast and wait” is not the treatment for occult carpal bones fracture’s. The quantitative Xray bone scan is able to diagnose such fractures with short delay.

Objective: 6 cases of postraumatic arthritis of the distal radius treated by chondro costal graft are reported with a minimum follow up of 2 years

Material and methods: 6 patients (One 22 years old patient with a dislocated radiocarpal joint 6 months after an injury, 3 patients (48, 52 and 53 years old) respectively 1, 1,5 and 2 years after a intraarticular fracture of distal radius and a patient (74 years old) with radio lunate arthritis reported two mains complaints : pain and stiffness. The last patient was a female with a destruction of radio scaphoid joint after septic complication of scaphoid surgery. Location of the cartilage defect was central in two cases and palmar in the others. A dorsal approach in one case, a palmar approach in the five others allowed reduction and reconstruction of the destroyed radial part of joint. An osteochondro costal graft harvested on the eight’s rib was inserted and fixed by plate in place of the articular impaction. Plaster cast of 3 months in the first case and 1 month in the others cases followed the articular reconstruction

Results : No complication have been pointed. Union was achieved in all 6 cases. Integration and viability of the graft were evaluated with RMI. At the highest follow up functionnal result are excellent in the youngest first case (male, 22 years old) where motion and grasp are similar than the controlateral side. In the 4 others cases of mal union patients were pain free in daily activity with a functionnal wrist score of 72/100 (54–82) and a DASH of 38,3 (22,5–51,7). Only the case with the septic problem failed with pain at follow up.

Conclusion: Reconstruction of a partially destroyed articular surface by a costal graft is reliable and allows filling and resurfacing an articular cartilage void. If chondro costal graft is currently used in maxillo facial surgery it is the first report in post traumatic arthritis secondary to intra articular mal union.

Objective: The purpose of the present study was to report on the author’s experience using injectable cement as a bony substitute in distal radius corrective osteotomies. The interest of such a bone substitute is the real capacity to adapt itself to the bone defect. Harvesting a trapezoidal cortico spongious graft which can fill very precisely the void and not more remains a challenging objective in treating extra articular mal union.

Material and Methods: 5 patients with an average age of 57 yo (42–74) had a corrective osteotomy for a malunited distal radius fracture using Injectable bone substitute (Eurobone, Jectos, Kasios Inc) as an alternative to an autogenous bone graft. Internal fixation of the osteotomy was achieved by using one plate without post operative immobilisation. Two patients were stiff at preoperative time.

Results: At an average follow-up evaluation of 26 months (14–37 mo) all the osteotomies united. Wrist flexion-extension motion improved from 56° to 110°, forearm rotation increased from 112° to 142°, and grip strength had an average increase of 120% at the time of the final follow-up evaluation. All patients were satisfied but there one report of persistent pain. Radiographic evaluation showed an average volar tilt improvement from a preoperative dorsal angulation shifting into a neutral position in the sagittal plane; Radiographically the injectable cement showed evidence of progressive re-absorption over time but with no complete disappearance.

Conclusions: On the basis of this preliminary experience it is reasonable to consider injectable cement as a viable alternative to bone grafting in conjunction with surgical correction and internal fixation of extra articular distal radius malunion.

Purpose of the study: Functional recovery afte displaced cephalotuberosity fracture of the proximal humerus in pateints aged over 70 years is a major surgical challenge. Reconstuction with an inversed prosthesis avoids the problems of tuberosity fixation. We report a prospective consecutive series of reversed prostheses used of 3 and 4 fragment displaced and non-displace fractures in patients aged over 70 years.

Material and methods: Between January 2001 and June 2004, 19 patients aged over 70 years were included in this study, 16 women and 3 men, mean age 74.9 years (range 58–94 years, median 76 years). All presented 3- or 4-fragment fractures. An independent operator established the Constant and Dash scores. The position of the implants, loosening, presence of a glenoid notch (Nerot) were noted on plain x-rays.

Results: Sixteen of the 19 patients (13 women, 3 men), mean age 73.9 years (range 58–94 years) were reviewed at mean 12.6 months follow-up (range 6–18 months). There were no cases of dislocation. Hematogenous sepsis occurred at 16 months in one patient and led to implant removal. The raw Constant score was 53 (34–76) and the weighted Constant score 76.1 (41–110.1). The Dash score was 37.4 (34–76). Active abduction reached 91.2° (10–150°), active elevation 97.5° (20–150°), active RE1 6.6° (0–50°), active RE2 9.4° (0–90°) and active internal rotation 31.2° (0–60°). There was a humeral lucent line in five cases and a grade 0 glenoid line in one, grade 1 and 2 in six, and grade 3 in three.

Discussion: The only series of fracture of the proximal humerus in patients aged over 70 years was a retrospective study of prosthesis patients reported by Wretenberg in 1997. To date, there has not been a published series on use of the reversed prosthesis for fracture. For the short term in a population with frail bone and minimal functional requirements, reversed implants provide the best subjective and objective functional results. The absence of postoperative immobilization and independence from the rotator cuff enables rapid recovery of useful motion. Range of motion is reduced only to a small extent for rotation. Thus when possible, we reinsert the tuberosities with the reversed implant. Even if the tuberosity assembly dismounts (agitation in a context of temporospatail disorientation), there is no consequence on the reversed prosthesis. The large number of lucent lines with no clinical impact is a point to be examined carefully, showing that further improvement can be achieved with the existing implants.

Purpose of the study: Occult fractures of the carpal bone are underestimated. An undetected fracture of the scaphoid will not be immobilized and will lead to nonunion and osteoarthritic degradation. In order to avoid late diagnosis and functional loss, in addition to lost chances and legal suites, we validated a quantitative radioscin-tigraphic (QRS) tool in a randomized prospective trial conducted from 1997 to 2003 in a routine practice setting. The series included 667 patients with wrist trauma presenting a normal plain x-ray one day 0. After day 8 these patients underwent QRS.

Material and methods: The principle of the technique consists in a classical technetium scintigraphy with two technical improvements:

quantification of uptake: uptake two-fold greater on the injured side is a sign of «certain» fracture;

Results: Forty percent of the wrist trauma patients (260/667) with a normal plain x-ray presented an occult fracture (uptake > 2 on QRS). QRS was performed on day 17.7 on average. Fractures of the scaphoid were the most frequent (42%). The uptake ratio was higher if the QRS was performed from day 11 to day 20. Statistical analysis showed that uptake ratio > 2 was independent of age, gender, bone volume, and time to QRS.

Discussion: As demonstrated by Dikson, Dias, Thomp-son and Kuckla, repeated x-ray images do not increase the rate of diagnosis of carpal bone fractures. Spitz demonstrated that scintigraphic uptake on the trauma side more than twice that on the healthy side is a sign of fracture. Garbuio, NOvert and Lepage validated QRS as a sensitive and specific diagnostic tool for occult fractures. They demonstrated that QRS is less costly, more reliable than MRI and that there are no false positives.

Conclusion: Exploration of a «bone problem» in a patient with wrist trauma must not ignore sensitive and specific tests. Ultrasonography is operator-dependent and requires validation. We thought that QRS would not resist the development of routine MRI, but observed the contrary. QRS remains the gold standard diagnostic tool for ruling out a fracture of the carpal bones.