Introduction: Temporary hemiepiphyseodesis allows correction of angular deformities of the lower extremities in children before the end of growth. The eight plate is an alternative to Blount staples with the theoretical advantage of a more minimal approach, less risk of loosening with subsequent need for a re-operation and less compression of the growth plate due to the tension band mechanism. We report our results and experiences with this new implant.

Methods: Between August 2005 and May 2007 we implanted 74 eight plates (Orthofix International NV, Netherlands Antilles) in 32 patients. An idiopathic valgus deformity was the indication in 20 patients, an idiopathic varus in 4 patients, and a malalignment due to other reasons like infection, syndrome-association or trauma was seen in 8 patients. For the first part of this study we evaluated intra–and postoperative complications in patients with a minimum follow-up after the operation of 3 months. For the second part of the study we evaluated the results of correction after removal of the plate and analyzed long-standing radiographs using the malalignment test.

Results: Twenty-three patients treated with a total of 52 eight plates were included into the first part of this study. The mean follow-up after implantation was 9,5 months (range:3,4–22 months). One patient suffered from a significant postoperative haematoma which resolved spontaneously after 2 weeks and two patients showed a limited range of motion of the knee joint postoperatively. In both patients the range of motion was completely restored after 10 sessions of physical therapy. No other complication was seen during follow-up. Up to now 25 eight plates in 12 patients with 18 lower limb segments were removed. The mean age of the patients at the time of surgery was 12,2 years(rang: 6 – 13). The x-rays of these 18 lower extremities were reviewed and the alignment was analyzed. The mean preoperative mechanical axis deviation was 30,6mm (range: 8-50 mm). After hardware removal the mechanical axis showed a mean deviation from the center of the knee joint of 0,2 mm medial (range: 6mm lateral to 5 mm medial). The mean duration of implantation was 8,3 months (range: 4 to 16 months). Overcorrection was found in 2 patients, while a lack of correction at the end of growth was seen in one patient.

Conclusion: The eight plate is a safe and effective implant for temporary hemiepiphyseodesis. Especially loosening or implant failure, both commonly reported with the use of Blount staples, was not seen in our case series. Due to the minimal invasive approach with the need to implant only one eight-plate vs. two to four Blount staples and the sizes of the plates available the indications may be spread to a wider spectrum of deformities and ages.

Introduction: Congenital tarsal coalition is one of the most prevalent (1–6%) anomalies of the hindfoot and midfoot. Its etiology is unknown. By definition there are boney, cartilaginous or fibrous brigdes between 2 bones of the hindfoot and midfoot, which are classified by their localization; the most common coalitions are calcaneonavicular (53%) and talocalcaneal (37%).

Patients and Methods: From 2001 to 2007 28 patients with 37 coalitions had surgery at the Orthopedic Hospital Vienna-Speising.

32 calcaneonavicular coalitions were surgically excised and an autogenous free fat graft was interponed to prevent a relapse. 1 calcaneonavicluar coalition also had an interposition of the extensor digitorum brevis after resection, while 1 calcaneonavicular coalition had lengthening of the short peroneal tendon in addition to excision and autogenous free fat graft. 1 calcaneonavicular coalition had to have an arthrodesis of the talocalcaneal joint.

From 2 talocalcaneal coalitions 1 had excision the other 1 talocalcaneal arthrodesis.

Both of the coalitions that had arthrodesis had short-leg plastercasts for 12 to 13 weeks.

For patients with bilateral coalition pedobarography was performed and the foot that had been treated compared to the untreated contralateral side. For these patients the AOFAS ankle and hind foot score and pain according to the VAS were evaluated.

Results: 22 coalitions that had had surgery were uncomplaining after intervention, including 1 patient who had had arthrodesis. 3 calcaneonavicular coalitions that had had excision and autogenous free fat graft had a relapse within 2 to 3 years. 2 of them had a revision and second-look excision of the bridge.

1 patient showed a suspicious relapse in MRI after excision of a calcaneonavicular coalition. 1 talocalcaneal coaltion that had had excision continued to have pain after surgery. Both patients did not want a revision.

1 patient who was treated by an arthrodesis of the subtalar joint had a fracture of the tibial head, where autogenous bone graft had been taken. Osteosynthesis of the tibia was performed.

4 patients had pain after excision of a calcaneonavicular coalition but could be relieved by conservative treatment.

For 5 patients adequate follow up is still pending due to short interval to surgery.

Pedobarography showed tendecies of improved pressure distribution of the treated feet that were not significant.

Conclusion: Excision and autogenous free fat graft should be first approach to surgery of symptomatical congenital tarsal coalitions for whom conservative treatment was not satisfying. When resected sufficiently the rate of relapse of the boney, cartilaginous or fibrous bridge is 7%. Depending on the patients age, the size of the affected area of the joint (50%) and secondary arthrotic changes of the joint an arthrodesis of the talo-calcaneal joint should be performed.

Introduction: The Ponseti method has been adopted by many pediatric orthopaedic centers throughout Europe in the last years. The minimal invasive approach and the short duration of the active treatment phase have been the main reasons to change to the Ponseti method at our institution. We report the short term results of patients treated with the Ponseti method for idiopathic clubfeet and discuss experiences and pitfalls.

Material and Methods: From the end of 2002 on we have applied the treatment regime strictly as described by Ponseti himself. For this study we analyzed a group of patients comprising all patients treated for congenital idiopathic clubfoot according to the Ponseti protocol within the first three weeks after births. The need for open release surgery was the main outcome measurement in this group.

Results: Between December 2002 and July 2004 we treated a total of 59 clubfeet in 37 patients with the Ponseti method. Our patient population consisted of 14 female and 23 male patients. The mean Dimeglio score was 9.2 points (5–15 points). Using the Pirani score the mean midfoot score was 1.7 points (1–3 points), the mean hindfoot score was 2 points (0.5–3 points) and the mean total score was 3.8 points (2–6 points). Three feet in two patients were treated with Ponseti casting only (5 %) and did not need a percutaneous achilles tenotomy (pAT) or open release surgery. Fifty-two feet in 33 patients (88 %) were successfully treated with Ponseti casting and pAT. Four cases in two patients had to undergo a McKay Simons procedure (7 %). Thereby 93% of all cases were treated without open release surgery. Mean follow-up after the last cast was 7.4 months (3–16 months). A recurrence was seen in one patient representing two cases after about 8 months after pAT. The parents were non compliant with the abduction bar protocol and could not be convinced of the importance of the orthosis; a McKay Simons procedure was performed. No other cases of recurrence were observed during the follow up period.

Discussion: The Ponseti method should be applied as originally described, and especially, if more people are involved in the treatment, a standard treatment regime is desirable. As the compliance of the parents is a crucial factor, everything should be done to ensure that the treatment is made as easy for them as possible. Only if a full support for questions or problems with the casts and especially with the braces is available, a good compliance can be ensured. The minimal invasive approach utilized by the percutaneous tenotomy is the lead argument in favor of the Ponseti method. In cases of recurrence or residual deformity when open surgery is necessary, this secondary procedure is in fact primary surgery. Thereby the danger of massive scaring associated with limited range of motion, pain and disability after a second procedures is prevented.

Introduction: A growing number of pediatric orthopaedic surgeons have adopted the Ponseti method for the treatment of idiopathic congenital clubfeet. Ponseti himself does not recommend the standard use of radiographs but suggests that palpation alone should be used to assess the correction in infant clubfeet. Although ultrasound diagnostic techniques for evaluating the infant foot are on the rise, most orthpaedic surgeon still rely on native radiographs to objectify the course of treatment. The aim of our study was to elucidate the role of radiographs in Ponseti clubfoot treatment.

Material and Methods: From the end of 2002 on we have used the treatment regime as originally described by Ponseti. Only infants with idiopathic clubfeet treated within the first three weeks of life were included. Radiographs of infant clubfeet are taken in ap.- view and lateral view in maximum dorsiflexion. Radiographs were taken at presentation mostly for legal documentation, before tenotomy at about 6 to 15 weeks of age, and 1 week after the percutaneous Achilles tenotomy (pAT). The tibiocalcaneal angle (Tib.C.-angle), the ap.- talo-calcaneal angle (TC-angle) and the lateral talo-calcaneal angle (lat. TC- angle) were evaluated. The maximum dorsiflexion was evaluated clinically.

Results: Forty-seven feet met the inclusion criteria. The mean gain of the tibiocalcaneal angle after tenotomy was 15,08 degrees. The ap.- talo-calcaneal angle only showed a mean change of 2,57 degrees and the lateral talo-calcaneal angle changed 0,44 degrees. The dorsi-flexion was found to have gained 13,85 degrees after tenotomy. The values of the tibiocalcaneal angle (Tib. C.-angle) and the values for dorsiflexion (DF) before and after pAT showed a significant difference (p< 0.05). No significant difference was found for the ap.- talo-calcaneal angle (TC-angle) and the lateral talo-calcaneal angle (lat. TC- angle) before and after tenotomy.

Discussion: The results of our series indicate that the tib-iocalcaneal angle changes about the same amount as the clinical dorsiflexion does. The ap.- talo-calcaneal angle (TC-angle) and the lateral talo-calcaneal angle (lat. TC- angle) were not influenced much by the Achilles tenotomy in our series. This seems reasonable as cutting of the Achilles tendon mostly influences the calcaneous which is the endpoint of the tendon. The dorsal opening of the talocalcaneal joint is coupled with derotation of the talus and calcaneous in the ap.-view and is hardly influenced by pAT. Although the position of the calcaneous in the heel can be palpated and even quantified by the empty heel sign according to Pirani, radiographs are the only way to objectify the true anatomy.

Background: The aim of this study was to evaluate Ponseti’s method of clubfoot management objectively and quantitatively by using ultrasound.

Methods: 22 newborns with 39 club feet were studied sonographically. Ultrasound examinations of all club feet were performed three times during the treatment according to Ponseti: at birth (1st measurement), one day before performing the percutaneous tenotomy of the Achilles tendon (2nd measurement) and 3 weeks after the operation (3rd measurement). In order to prove sonographic changes during the treatment precisely and quantitatively four angles (TnCe, TnMT1e, CaCue, TTd) were measured.

Results: Statistical analyses by using student’s t-test were conducted. The results are expressed as the means SD. At the first measurement means for TnCe were 19,41 (SD 11,71), for TnMT1e 15,21 (SD 10,32), for CaCue -6,49 (SD 7,14) and for TTd 33,38 (SD 10,60). At the second measurement means for TnCe were -6,93 (SD 3,96), for TnMT1e -12,24 (SD 4,76), for CaCue -4,00 (SD 5,24) and for TTd 28,66 (SD 6,38). At the third measurement means for TnCe were -7,86 (SD 5,47), for TnMT1e -12,97 (SD 5,69), for CaCue -1,45 (SD 2,05) and for TTd 18,08 (SD 2,75). At the 3rd measurement all angles showed values within the 95% confidence intervals of normal feet. All differences approached high significance (p< 0,0001).

Conclusion: During the treatment of idiopathic club-foot according to Ponseti the sonographically obtained measurements showed a significant improvement of all angles. Therefore this ultrasound technique can be used to evaluate the Ponseti method objectively and to compare one treatment to another.