[Arthrodesis for the treatment of rigid flatfoot]. / Arthrodesen zur Behandlung des rigiden Plattfußes.

In the case of a rigid flatfoot deformity, joint-preserving techniques like soft-tissue balancing and osteotomies do not achieve acceptable results. This is the indication for arthrodesis. The selection of the arthrodesis depends on the amount of deformity, localisation of the rigidity and the general health status of the patient. Isolated arthrodesis can be combined with soft-tissue reconstructions. It is functionally advantageous to preserve as many joints as possible.

Peroneal Tendons Rupture in a Closed Talar Body Fracture: A Rare Injury.

The combination of tendon and ligament ruptures with fracture of the talus is very rare. We demonstrate our experience in the acceptable management of a 34-year-old male referred with a closed comminuted fracture of the talar body after falling 7 meters. During the surgery, complete rupture of the peroneus brevis tendon, partial rupture of the peroneus longus tendon, and an avulsed superficial deltoid ligament from medial malleolus were found. Twelve months after open reduction and internal fixation of the talar body fracture and repair of the peroneal tendons and superficial deltoid ligament, the patient was satisfied, without any talar dome collapse, sclerosis, or arthritic changes. It is recommended to take care of possible tendon or ligament ruptures during fixation of talar fractures in cases of high-energy trauma.

Long-term outcome of first metatarsophalangeal joint fusion in the treatment of severe hallux rigidus.

AIMS: This study was aimed to study the arthrodesis of the first metatarsophalangeal joint using an oblique interfragmentary lag screw and dorsal plate as an effective option for the treatment of hallux rigidus. Few researchers have studied the outcome of this surgical method over a long follow-up period. PATIENTS AND METHODS: We performed a retrospective review of 60 patients status post arthrodesis of the first metatarsophalangeal joint. The mean age was 68.5 years and average follow-up lasted for 47.3 months. Patients' satisfaction and functional outcomes were evaluated with the American Orthopaedic Foot and Ankle Society Hallux Metatarsophalangeal-Interphalangeal Scale, the foot and ankle questionnaire, the Functional Foot Index, and dynamic pedobarography. RESULTS: Fusion rate of 93.3 % was recorded; 6.7 % of the cases ended up with a painless pseudarthrosis and required no additional surgery. Pedobarographic measurements demonstrated first ray weight bearing function restoration. More physiological foot plantar pressure patterns were observed. Concerning the postoperative outcomes, 71.7 % of the patients were very satisfied and 18.3 % were satisfied. The American Orthopaedic Foot and Ankle Society Hallux Metatarsophalangeal-Interphalangeal Scale increased post-operatively from 40.9 to 79.3. CONCLUSION: The arthrodesis of the metatarsophalangeal joint using transarticular screw and dorsal nonlocked plate is an effective method for the treatment of severe hallux rigidus with fair patient satisfaction rate and functional outcome.

Managing Complications of Foot and Ankle Surgery: Hallux Valgus.

Hallux valgus deformity is nowadays one of the most common and symptomatic disorders affecting the foot. Surgical corrections of hallux valgus deformity are among the most common orthopedic procedures. Despite the general high success rate complications can occur. The treatment of complications start before the first incision has been performed by thorough preoperative planning and choice of the right procedure. Once the complication is evident, thorough planning is necessary to address the patient's individual needs. In this paper the treatment of recurrent hallux valgus, hallux varus, malunion, and avascular necrosis are discussed.

Interdigital vs Transarticular Lateral Release With Scarf Osteotomy.

BACKGROUND: We compare the clinical and radiographic outcomes of the interdigital approach vs the medial transarticular approach for lateral release combined with scarf osteotomy. METHODS: Seventy-seven feet with moderate to severe hallux valgus underwent scarf osteotomy and lateral soft tissue release, using an interdigital approach (n = 36) vs medial transarticular approach (n = 41). The clinical measurements (range of motion, American Orthopaedic Foot & Ankle Society [AOFAS] score) and radiographic data were evaluated preoperatively and at final follow-up (93-124 months postoperatively). Additionally, the numeric pain rating scale and Foot and Ankle Outcome score [FAOS] were assessed postoperatively. RESULTS: The AOFAS score improved from 60 (q1 = 54, q3 = 70) to 93 (q1 = 85, q3 = 98) in the transarticular group, and from 59 (q1 = 50, q3 = 64) to 95 (q1 = 85, q3 = 100) in the interdigital group. The hallux valgus angle improved from 35.7±6.5 degrees to 15.5±7.6 degrees in the transarticular group, and from 36.0±6.8 degrees to 12.9±13.0 degrees in the interdigital group. The intermetatarsal angle improved from 16.5±2.5 degrees to 6.5±2.7 degrees within the transarticular group and from 17.2±2.5 degrees to 7.3±4.3 degrees in the interdigital group. None of the clinical or radiographic parameters showed any significant differences between the treatment groups. CONCLUSION: Comparison of outcomes between the interdigital approach and the transarticular approach for lateral soft-tissue release with scarf osteotomy are equally successful. The transarticular approach can thus be considered safe and effective, with the additional benefits of just one scar as opposed to 2. LEVEL OF EVIDENCE: Level III, therapeutic.

Percutaneous, MIS and open hallux valgus surgery.

There is some confusion in the terminology used when referring to MIS (Minimal invasive surgery) or percutaneous surgery. The correct term to describe these procedures should be percutaneous (made through the skin) and MIS should be reserved for procedures whose extent is between percutaneous and open surgery (e.g. osteosynthesis). Minimal incision surgery may be distinguished in first, second and third generation minimal incision surgery techniques.First generation MIS hallux valgus surgery is mainly connected with the Isham procedure; an intraarticular oblique and incomplete osteotomy of the head of the first metatarsal without fixation.The Bösch osteotomy and the SERI are classified as second generation MIS hallux surgery. They are both transverse subcapital osteotomies fixed with a percutaneous medial K-wire inserted into the medullary canal. For all these procedures, intraoperative fluoroscopic control is necessary.Open hallux valgus surgery can be divided into proximal, diaphyseal and distal osteotomies of the first metatarsal. Reviewing the available literature suggests minimally invasive and percutaneous hallux valgus correction leads to similar clinical and radiological results to those for open chevron or SCARF osteotomies. First generation minimally invasive techniques are primarily recommended for minor deformities. In second generation minimally invasive hallux valgus surgery, up to 61% malunion of the metatarsal head is reported. Once surgeons are past the learning curve, third generation minimally invasive chevron osteotomies can present similar clinical and radiological outcomes to open surgeries. Specific cadaveric training is mandatory for any surgeon considering performing minimally invasive surgical techniques. Cite this article: EFORT Open Rev 2021;6:432-438. DOI: 10.1302/2058-5241.6.210029.

Clinical and Radiological Outcomes of Operative Therapy in Insertional Achilles Tendinopathy With Debridement and Double-Row Refixation.

BACKGROUND: Insertional Achilles tendinopathy (IAT) is a painful pathology in which the strongest and thickest tendon of the human body is affected. Different conservative and operative treatments have been described to address this pathology. This study aimed to evaluate the medium-term clinical and radiological outcomes of patients who underwent a surgical therapy via a longitudinal tendon-splitting approach with debridement and double-row refixation. METHODS: All patients were assessed pre- and postoperatively using a visual analog scale (VAS), the American Orthopaedic Foot & Ankle Society (AOFAS) Hindfoot Score, the Foot and Ankle Outcome Score (FAOS), and the Foot Function Index (FFI). Additionally, a lateral radiograph of the foot was performed to assess the postoperative result. Forty-two patients with confirmed IAT who underwent surgery between 2013 and 2017 with a longitudinal tendon-splitting approach and tendon refixation using a double-row refixation system were evaluated. The average follow-up was 32.8 (range, 18-52) months. We included 26 female and 16 male patients with an average age of 56.8 (range, 27-73) years. RESULTS: The mean VAS improved from 8.91 ± 1.0 preoperatively to 1.47 ± 2.5 postoperatively (P< .01). AOFAS scores improved significantly from 51.0 ± 12.5 preoperatively to 91.3 ± 14.3 postoperatively (P< .01). All total and subscores of the FFI and FAOS saw a significant improvement at follow-up (P< .01). Lateral radiographs showed recurrent calcification in 30 patients (71.4%). CONCLUSION: We found that, at an average of 33 months posttreatment, insertional Achilles tendinopathy via a longitudinal tendon-splitting approach resulted in good outcomes for patients after failure of initial conservative therapy. Recurrent calcification seems to be very common but shows no association with inferior outcomes or the return of symptoms. LEVEL OF EVIDENCE: Level IV, retrospective case series.

Midterm Outcome of Subtalar Joint Revision Arthrodesis.

BACKGROUND: The outcomes of revision subtalar arthrodesis have received relatively little focus in research compared with primary subtalar arthrodesis outcomes. This study aimed to assess the midterm clinical and radiologic results of subtalar joint revision arthrodesis and to analyze the risk factors that might influence the outcome of this procedure. METHODS: We performed a retrospective review of 20 patients after subtalar joint revision arthrodesis for malunion, using interposition of iliac crest bone graft. The mean age was 55.75 years and the average follow-up lasted for 48.93 months. Eighty-five percent of the patients had at least 1 risk factor identified prior to revision. Patients' satisfaction and functional outcomes were evaluated with the American Orthopaedic Foot & Ankle Society Scale (AOFAS), the Foot and Ankle Outcome Score (FAOS), the Foot Function Index (FFI), and dynamic pedobarography. RESULTS: A fusion rate of 80% was recorded whereas 20% of the cases ended with a painful pseudarthrosis requiring additional surgery. Pedobarographic measurements demonstrated that loading has a propensity toward the lateral column, but no substantial effect on the gait of patients. In this group, the following patient-reported outcomes were observed: 70% of the patients were satisfied, 20% of the patients found the result fair, and 10% were not satisfied with the results. Compared with the preoperative evaluation, postoperative functional scores showed significant improvement on the FOAS, AOFAS, and FFI outcome scales. CONCLUSION: Revision arthrodesis of the subtalar joint remains a challenging issue with a relatively high rate of nonunion, especially in a population of patients with multiple risk factors. LEVEL OF EVIDENCE: Level IV, retrospective case series.

[Tumors and tumor-like lesions of the foot and ankle - a retrospective analysis of 22 years]. / Tumore und tumorsimulierende Läsionen am Fuss und Sprunggelenk - eine retrospektive Analyse aus 22 Jahren.

Musculoskeletal tumors are rare, with approximately 1% of all malignancies. Only 4% are localized at the foot and ankle. Because of this fact, tumors are often overlooked or even misdiagnosed. During a period of 22 years, 75 tumors (from a total of 1452) were localized at the foot and ankle. Retrospectively, we analyzed the anatomic location of the tumors, the patient's age at the date of diagnosis, and the therapy. Eighteen of 75 tumor cases were malignant, seven cases were with a malignant bone tumor, and 11 cases were with a malignant soft tissue tumor. The most important precondition is a faithful implementation of diagnostic and therapeutic guidelines when treating musculoskeletal tumors. Primary malignant tumors require a wide or radical surgical resection. Whether limb-keeping or ablative procedures should be used also depends on the anatomic location of the tumor, the expectations of the patient, and the functional demands of patients.

Freiberg's Infraction: Surgical Options.

Freiberg's infraction is an uncommon condition of the lesser metatarsophalangeal joints. Onset is usually between the 11th and 17th year of age. It is the only osteochondrosis that dominantly affects females with a reported female-to-male ratio of 5.1. The second metatarsal is most frequently involved (68%) followed by the third metatarsal (27%), and the fourth (3%). Surgical treatment options can be categorized in joint destructive and joint preserving procedures. Studies reveal complete resolution of pain and full return to activities in 70% after joint destructive procedure and more than 90% after joint preserving procedures.

Short-Term Results of Endoscopic Percutaneous Longitudinal Tenotomy for Noninsertional Achilles Tendinopathy and the Presentation of a Simplified Operative Method.

PURPOSE: This study was aimed to review the short-term results of endoscopic percutaneous longitudinal tenotomy for noninsertional Achilles tendinopathy using the Centerline Endoscopic Carpal Tunnel Release instrument (Arthrex). This method simplifies the operation technique, allows a good endoscopic visualisation of the Achilles tendon with very promising results. METHODS: We performed multiple percutaneous longitudinal tenotomies under local anesthesia in 24 patients (25 tendons) with Achilles tendinopathy or peritendinitis that had failed conservative treatment between January 2013 and September 2016. All ambulatory procedures consisted of paratenon release and longitudinal tenotomies. The results were reviewed in 22 patients (23 tendons) at an average follow-up period of 22.5 months (range 10-36 months). Patients' satisfaction and functional outcomes were evaluated using the Victorian Institute of Sports Assessment-Achilles (VISA-A) questionnaire, the pain visual analog scale (VAS), and the functional foot index. RESULTS: Initial results are very promising with excellent results in 12 patients, good results in 9 patients, and fair result in 1 patient. One patient developed a postoperative thrombosis of the operated limb. Another patient developed a hypertrophic painful scar of the incision wound. The VAS for pain decreased drastically after the index procedure and averaged to 0.2 (SD 0.447). The VISA-A questionnaire score had improved from 42 ± 7.2 points preoperatively to 96.8 ± 14.3 points postoperatively (P = .004). The functional foot index decreased from 84 (SD 30.517) to 33.4 (SD 6.452) on the follow-up examination. CONCLUSIONS: The endoscopic-assisted longitudinal tenotomies procedure of the Achilles tendon is easily feasible and can be performed on an outpatient basis, produces minimal complications and shows excellent results. The described technique is recommended for all surgeons especially for those familiar with endoscopy of the Achilles tendon. LEVELS OF EVIDENCE: Therapeutic, Level IV: Case Series.

Comparison of Plantar Pressure Distribution and Functional Outcome after Scarf and Austin Osteotomy.

OBJECTIVE: To investigate the changes of plantar pressure distribution in patients who underwent either Austin or Scarf osteotomy and underwent a postoperative rehabilitation program. METHODS: Between September 2006 and December 2007, 50 participants who suffered from mild to moderate hallux valgus deformity were prospectively included in this study. An Austin osteotomy (Austin group) was performed in 25 patients and a Scarf osteotomy (Scarf group) in 25 patients. Indication for the Scarf or Austin technique was made according to the consensus of the Austrian society of foot and ankle surgery. Plantar pressure analysis was performed at 4 weeks, 8 weeks, and 6 months postoperatively. Furthermore, range of motion and the American Orthopaedic Foot and Ankle Society (AOFAS) questionnaire were evaluated. RESULTS: In the big toe and first metatarsal head region in groups, maximum force, peak pressure, and force-time integral increased significantly from 4 weeks to 6 months postoperatively (P ≤ 0.001). The mean AOFAS score increased from 60.7 preoperatively to 93.1 6 months after Austin surgery and from 56.7 preoperatively to 94.4 6 months after Scarf surgery. The Austin group had a mean range of motion (ROM) of 68.5° that increased to a mean ROM of 75.5° 6 months postoperatively, while the Scarf group had a mean ROM of 67.8° that increased to a mean ROM of 68.2° 6 months postoperatively. CONCLUSION: Despite different surgical techniques and the degree of deformity, there were no differences in plantar pressure parameters and functional outcomes between both groups.

Bioabsorbable Fixation Screw for Proximal Interphalangeal Arthrodesis of Lesser Toe Deformities.

BACKGROUND: Although standard fixation of proximal interphalangeal (PIP) arthrodesis by K-wire is relatively inexpensive and well established, it does have some drawbacks, making newer fixation devices interesting. The aim of this study was to clinically and radiologically assess the operative correction of the lesser toe deformation in the form of a PIP arthrodesis using a bioabsorbable 2.7-mm fixation screw. METHODS: From January 2011 until October 2013, 34 patients underwent a PIP arthrodesis using the TRIM-IT (Arthrex) 2.7-mm fixation screw and were contacted for this retrospective cohort study. At an average of 3.3 years after the operation, 24 patients and 26 toes were evaluated clinically, radiologically, through pedobarography, and a patient-satisfaction survey. RESULTS: Using the PLLA screw for fixation, 84.6% showed bony union of the arthrodesis, and 84.6% were satisfied. Mean AOFAS score was 82.7 points and thus regarded as good. The mean VAS score was 1.3/10. Overall, 73.1% of the toes showed good alignment, and 7.7% had a painless recurrence of deformity and were still satisfied with the intervention. In addition, 34.6% had floating toes, but only 4.2% without Weil osteotomy or encroachment. Further, 3.8% were advised to undergo a revision because of severe misalignment. CONCLUSION: The 2.7-mm bioabsorbable fixation screw yielded results that were comparable to other fixation devices for PIP fusion fixation regarding success rate, revisions, and patient acceptance. LEVEL OF EVIDENCE: Level IV, retrospective case series.

Salvage of the failed Keller resection arthroplasty. Surgical technique.

BACKGROUND: A number of typical complications have been associated with Keller resection arthroplasty. Recurrent valgus deformity, cock-up deformity, and a flail toe may be difficult problems for the treating surgeon because options for salvage are limited. In this study, we evaluated arthrodesis of the first metatarsophalangeal joint as a salvage technique following a failed Keller procedure. In addition, the outcomes of motion-preserving procedures were reviewed in a separate series. METHODS: Arthrodesis of the first metatarsophalangeal joint was performed in twenty-eight patients (twenty-nine feet, group A), and either a repeat Keller procedure or an isolated soft-tissue release was performed in eighteen patients (twenty-one feet, group B). The patients were evaluated at least twenty-four months postoperatively, with a personal interview and a clinical examination with use of a modification of the hallux metatarsal-interphalangeal scale. Radiographs were also made for the group treated with the arthrodesis. RESULTS: In group A, the average duration of follow-up was thirty-six months and fusion was achieved in twenty-six of the twenty-nine feet. Satisfaction was excellent or good in twenty-three cases, and the postoperative score according to the modified hallux metatarsal-interphalangeal scale averaged 76 points (maximum, 90 points). A repeat arthrodesis was necessary in five feet because of malposition or pseudarthrosis. In group B, the average duration of follow-up was seventy-four months. Satisfaction was excellent or good in only six cases, and the patient was dissatisfied in eleven cases. The score according to the modified hallux metatarsal-interphalangeal scale averaged 48 points. Valgus deviation and cock-up deformity had recurred in the majority of the feet at the time of follow-up. CONCLUSIONS: Although it is more technically demanding, we recommend arthrodesis for salvage following a failed Keller procedure since it may be associated with a higher rate of patient satisfaction and better clinical results.

Osteotomies for hallux valgus correction.

A variety of metatarsal osteotomies has been described since the first report by Gernet in 1836. Many of these osteotomies were abandoned throughout the years. Because one procedure is not capable of correcting all types of hallux valgus deformities, an algorithm, as a guideline, is preferable. This article presents a choice of metatarsal osteotomies for correction of hallux deformities based on clinical and biomechanical research.

The Ludloff osteotomy for correction of hallux valgus.

OBJECTIVE: Correction of a symptomatic hallux valgus deformity. INDICATIONS: A hallux valgus deformity in which the intermetatarsal angle I-II exceeds 15 degrees and the shaft of the first metatarsal is broad enough to allow a rotational osteotomy. CONTRAINDICATIONS: Hypermobility of the first ray. Severe osteoporosis. Degenerative arthritis of the first metatarsophalangeal joint. SURGICAL TECHNIQUE: Longitudinal incision over the first intermetatarsal space. Division of the metatarsosesamoid ligament together with the tendon of the adductor hallucis muscle. Opening of the lateral articular capsule of the first metatarsophalangeal joint allowing a tension-free realignment of the head of the first metatarsal with the sesamoids. Medial longitudinal incision along the first metatarsal starting over the medial cuneiform bone and ending at the proximal phalanx of the great toe. Oblique osteotomy of the proximal two thirds of the first metatarsal in a proximal dorsal to distal plantar direction and lateral rotation of the distal fragment around a proximally placed 3-mm AO screw. Additional fixation with one BOLD screw. Trimming of the protruding bone and of bunion. Medial metatarsophalangeal capsulorraphy. RESULTS: Between September 1998 and October 1999, 76 feet underwent a Ludloff osteotomy. Patients were followed up clinically and radiographically for 36 months (24-56 months). The mean hallux valgus angle was reduced from 37 degrees to 14 degrees and the mean intermetatarsal angle I-II from 18 degrees to 9 degrees. Using a four-point scale 81% of the patients were satisfied or very satisfied with the result of the operation. 95% of them felt no or very mild pain.

Imaging of posterior tibial tendon dysfunction--Comparison of high-resolution ultrasound and 3T MRI.

PURPOSE: Posterior tibial tendon dysfunction is the most common cause of acquired asymmetric flatfoot deformity. The purpose of this study was to determine and compare the diagnostic value of MRI and high-resolution ultrasound (HR-US) in posterior tibial tendon dysfunction (PTTD), and assess their correlation with intraoperative findings. MATERIALS AND METHODS: We reviewed 23 posterior tibial tendons in 23 patients with clinical findings of PTTD (13 females, 10 males; mean age, 50 years) with 18MHz HR-US and 3T MRI. Surgical intervention was performed in nine patients. RESULTS: HR-US findings included 2 complete tears, 6 partial tears, 10 tendons with tendinosis, and 5 unremarkable tendons. MRI demonstrated 2 complete tears, 7 partial tears, 10 tendons with tendinosis, and 4 unremarkable tendons. HR-US and MRI were concordant in 20/23 cases (87%). Image findings for HR-US were confirmed in six of nine patients (66.7%) by intraoperative inspection, whereas imaging findings for MRI were concordant with five of nine cases (55.6%). CONCLUSION: Our results indicate that HR-US can be considered slightly more accurate than MRI in the detection of PTTD.

Salvage of a failed Keller resection arthroplasty.

BACKGROUND: A number of typical complications have been associated with Keller resection arthroplasty. Recurrent valgus deformity, cock-up deformity, and a flail toe may be difficult problems for the treating surgeon because options for salvage are limited. In this study, we evaluated arthrodesis of the first metatarsophalangeal joint as a salvage technique following a failed Keller procedure. In addition, the outcomes of motion-preserving procedures were reviewed in a separate series. METHODS: Arthrodesis of the first metatarsophalangeal joint was performed in twenty-eight patients (twenty-nine feet, group A), and either a repeat Keller procedure or an isolated soft-tissue release was performed in eighteen patients (twenty-one feet, group B). The patients were evaluated at least twenty-four months postoperatively, with a personal interview and a clinical examination with use of a modification of the hallux metatarsal-interphalangeal scale. Radiographs were also made for the group treated with the arthrodesis. RESULTS: In group A, the average duration of follow-up was thirty-six months and fusion was achieved in twenty-six of the twenty-nine feet. Satisfaction was excellent or good in twenty-three cases, and the postoperative score according to the modified hallux metatarsal-interphalangeal scale averaged 76 points (maximum, 90 points). A repeat arthrodesis was necessary in five feet because of malposition or pseudarthrosis. In group B, the average duration of follow-up was seventy-four months. Satisfaction was excellent or good in only six cases, and the patient was dissatisfied in eleven cases. The score according to the modified hallux metatarsal-interphalangeal scale averaged 48 points. Valgus deviation and cock-up deformity had recurred in the majority of the feet at the time of follow-up. CONCLUSIONS: Although it is more technically demanding, we recommend arthrodesis for salvage following a failed Keller procedure since it may be associated with a higher rate of patient satisfaction and better clinical results.

Proximal metatarsal osteotomies: a comparative geometric analysis conducted on sawbone models.

We evaluated the change in position of the first metatarsal head using a three-dimensional digitizer on sawbone models. Crescentic, closing wedge, oblique shaft (Ludloff 8 degrees and 16 degrees), reverse oblique shaft (Mau 8 degrees and 16 degrees), rotational "Z" (Scarf), and proximal chevron osteotomies were performed and secured using 3-mm screws. The 16 degrees Ludloff provided the most lateral shift (9.5 mm) and angular correction (14.5 degrees) but also produced the most elevation (1.4 mm) and shortening (2.9 mm). The 8 degrees Ludloff provided lateral and angular corrections similar to those of the crescentic and closing wedge osteotomies with less elevation and shortening. Because the displacement osteotomies (Scarf, proximal chevron) provided less angular correction, the same lateral displacement, and less shortening than the basilar angular osteotomies, based upon this model they can be more reliably used for a patient with a mild to moderate deformity, a short first metatarsal, or an intermediate deformity with a large distal metatarsal articular angle. These results can serve as recommendations for selecting the optimal osteotomy with which to correct a deformation.

The Ludloff metatarsal osteotomy: guidelines for optimal correction based on a geometric analysis conducted on a sawbone model.

Ideally, osteotomy for hallux valgus deformities corrects varus angle and pronation, while minimizing elevation, depression, and shortening. We used a serial linkage tracking device to evaluate five variations of the Ludloff osteotomy, a stable proximal metatarsal osteotomy that incorporates an oblique dorsal to plantar cut and a lateral swing or pivoting correction of the dorsal fragment. A neutral osteotomy (perpendicular to the sagittal plane) yielded the greatest correction (14 degrees) but with shortening (average, 2.85 mm), elevation (average, 1.36 mm), and additional pronation (average, 1.88 degrees). The same osteotomy angled 10 degrees plantarly with 8 degrees of correction produced an average of 1.57 degrees of supination, 1.22 mm of depression and, 0.54 mm of shortening. Additional plantar inclination (20 degrees) and angular correction (16 degrees) yielded increased depression, supination, and shortening. The current findings provide guidelines to achieve the desired correction and rotation and suggest that optimal results can be obtained by performing this osteotomy angled 10 degrees plantarly with a correction of 8 degrees to 16 degrees.