Minimally Invasive Chevron Akin Osteotomy: Preoperative Planning Using the Radiographic First-Ray Squeeze Test.

Background: Recognizing preoperative first-ray hypermobility is important to planning hallux valgus (HV) surgery. A recent study showed the minimally invasive chevron Akin (MICA) osteotomy increased varus displacement of the proximal fragment of the first metatarsal osteotomy. The present study aims to evaluate the ability of the radiographic first-ray squeeze test to predict the varus displacement of the proximal fragment of the first metatarsal osteotomy when performing the MICA procedure. Methods: A prospective case series of patients with moderate to severe HV who underwent MICA was performed. The HV deformity correction was analyzed by comparing the preoperative and 12-week postoperative hallux valgus angle (HVA) and the intermetatarsal angle between the first and second rays (1-2 IMA). The ability of the radiographic first-ray squeeze test to predict the varus displacement of the first metatarsal was done by comparing the preoperative 1-2 IMA measured in the AP radiographic first-ray squeeze test (IMA-ST) with the intermetatarsal angle between the second metatarsal and the axis of the first metatarsal osteotomy proximal fragment (IAPF) taken 12 weeks postoperatively. Results: Between July 2022 and May 2023, a total of 39 feet in 28 patients underwent MICA. The mean IMA improved from 13.8 (SD = 2.2) to 3.8 degrees (SD = 1.5) (P < .001), and the mean HVA improved from 27.8 (SD = 6.1) to 4.9 degrees (SD = 2.5) (P < .001). A linear regression analysis revealed that IMA-ST is highly associated with the 12 week assessed IAPF (P < .001). Conclusion: The preoperative radiographic first-ray squeeze test appears to predict with high fidelity the varus displacement of the proximal fragment of the first metatarsal that can occur after the MICA procedure.Level of Evidence: Level III, prospective cohort study.

Fourth-Generation Minimally Invasive Hallux Valgus Surgery With Metaphyseal Extra-Articular Transverse and Akin Osteotomy (META): 12 Month Clinical and Radiologic Results.

BACKGROUND: Fourth-generation minimally invasive surgery (MIS) includes the multiplanar rotational deformity correction achieved through manipulation of an extra-articular distal first metatarsal osteotomy that is held with rigid fixation using 2 fully threaded screws, of which one must be bicortical to provide rotational and biomechanical stability. The aim of this study is to report the clinical and radiologic outcomes of an evolved fourth-generation MIS hallux valgus technique. METHODS: A prospective single-surgeon series of consecutive patients undergoing fourth-generation MIS was performed using a distal transverse osteotomy with a minimum 12-month follow-up. The primary outcome was the Manchester-Oxford Foot Questionnaire (MOXFQ), a validated clinical patient-reported outcome measure (PROM). Secondary outcomes included radiographic deformity correction, clinical assessment, and EuroQol-5D-5L PROMs. RESULTS: Between September 2019 and June 2021, 50 feet underwent fourth-generation MIS. The mean age was 55.8±15.3 years with a mean follow-up of 1.4 years. Preoperative and minimum 12-month primary outcome data were available for 100% of feet. There was a significant improvement in all MOXFQ domain scores, with the index domain improving from 53.4 to 13.1 (P < .001). There was a significant improvement (P < .001) in hallux valgus angle (32.7 to 7.9 degrees), intermetatarsal angle (14.0 to 4.2 degrees) and distal metatarsal articular angle (18.5 to 5.6 degrees). There was a significant improvement in general health-related quality of life EQ-5D-5L index and EQ-VAS scores (P < .05). CONCLUSION: The fourth-generation MIS technique is a safe and effective approach to hallux valgus deformity correction with significant improvement in clinical and radiographic outcomes. LEVEL OF EVIDENCE: Level IV, prospective case series.

Percutaneous basal closing wedge osteotomy for hallux valgus deformity.

OBJECTIVE: This article describes the percutaneous technique of a minimally invasive basal closing wedge osteotomy for correction of hallux valgus. INDICATIONS: This procedure allows correction of severe deformity with a minimally invasive approach. CONTRAINDICATIONS: No specific contraindication; a fusion would be preferred for an arthritic tarsometatarsal or metatarsophalangeal joint. SURGICAL TECHNIQUE: The surgical technique is based on the use of burrs specifically adapted for foot surgery. A basal closing wedge osteotomy is performed and fixed percutaneously. Each step is controlled under fluoroscopy. POSTOPERATIVE MANAGEMENT: A postoperative heel shoe is prescribed for 6 weeks with crutches. The foot is elevated during the first 2 weeks. Impact is forbidden for 3 months. RESULTS: The authors report good and excellent results with an average correction of the hallux valgus angle of 26° and an intermetatarsal angle of 8.2°.

Lapidus, a Percutaneous Approach.

Described in the early 1900s by Albrecht and Lapidus, the Lapidus procedure became an important tool in the armamentarium. With the increase of percutaneous techniques, the development of a percutaneous Lapidus seemed obvious.

Development and validation of the unifying elective orthopaedic score (UnEOS). A pilot study.

BACKGROUND: Patient reported outcome measures (PROMs) are increasingly valued in orthopaedics. There are already many site specific or pathology specific scores. These scores are usually validated for specific pathologies and can be complicated and time consuming to use. The aim of the present pilot study is to develop a new orthopaedic score for elective operations, which measures patient satisfaction simply and quickly, and is not limited to a single site or pathology. MATERIALS & METHODS: The UnEOS questionnaire has 16 questions. Eleven questions relate to the three main dimensions (Symptoms, Function, Mental Status) and can be used both preoperatively and postoperatively. Five questions are added to the questionnaire at the postoperative mode, which form the satisfaction dimension. For this pilot study we enrolled all patients listed for surgery from our foot and ankle clinics. Each patient was asked to complete the UnEOS and FADI questionnaires. RESULTS: A total of 181 questionnaires were collected from patients (aged 56.4 ±â€¯14.8, range 20-85) with a variety of foot and ankle pathologies. Scores were obtained both pre- and post-operatively. The scale reliability was checked with the Cronbach's Alpha score, which was 0.87 for the UnEOS scale. Each subscale had good reliability with 0.73, 0.77 and 0.76 respectively (Symptoms, Function, Mental Status). The validity of the scale was checked using the Spearman's Rho correlation, which was strong between the UnEOS and the FADI score (0.79) and each subscale (0.7, 0.75 and 0.69 respectively). CONCLUSION: The UnEOS score is a valid and easy to use PROM which is not limited by site or pathology. Further validation with other orthopaedic pathologies will lead to a Unified Elective Orthopaedic score.

Isolated Acute Traumatic Subtalar Dislocations: Review of 13 Cases at a Mean Follow-Up of 6 Years and Literature Review.

Isolated acute traumatic subtalar dislocations are quite rare. They correspond to talotarsal dislocation, including the talonavicular and talocalcaneal joints. The purpose of the present study was to evaluate the functional and radiologic outcomes of the treatment of acute traumatic isolated subtalar dislocations. The present retrospective study included 13 patients who had sustained isolated subtalar dislocations during a 10-year period. Of the 13 cases, 10 (76.9%) were medial dislocations and 3 (23.1%) were lateral dislocations. All the patients underwent immediate closed reduction under anesthesia followed by immobilization. No open reduction was required. The mean follow-up period was 72.6 (range 24.4 to 124.8) months. The mean American Orthopaedic Foot and Ankle Society ankle-hindfoot score was 80.1 of 100 (range 66 to 90). The score result was good in 69% of cases and poor in 31% of cases. The subtalar mobility was reduced for 8 (61.5%) patients and significantly affected the American Orthopaedic Foot and Ankle Society score (p = .002). Subtalar osteoarthritis was present in 6 (46.1%) cases with talonavicular osteoarthritis in 3 (23.1%) cases. No cases of avascular necrosis of the talus were noted. In accordance with the published data, the prognosis of isolated acute traumatic subtalar dislocations is favorable. Medial dislocations are more frequent than lateral dislocations. Emergent closed reduction makes it possible to remove soft tissue injuries. The risk of post-traumatic subtalar osteoarthritis is significant, even without an initial subtalar lesion. A postreduction computed tomography scan will enable the diagnosis of osteochondral lesions.

Percutaneous Surgery for Severe Hallux Valgus.

Severe hallux valgus is a challenge to treat. If the basal osteotomy is a well known surgery for severe deformity, the chevron osteotomy is usually used in mild to moderate deformity. With a accurent fixation the chevron can also be used in severe deformity. Both techniques can be performed percutaneously and offer reliable techniques.

Percutaneous Surgery for Metatarsalgia and the Lesser Toes.

The traditional open surgical options for the treatment of metatarsalgia and lesser toe deformities are limited and often result in unintentional stiffness. The use of percutaneous techniques for the treatment of metatarsalgia and lesser toe deformities allows a more versatile and tailor-made approach to the individual deformities. As with all percutaneous techniques, it is vital the surgeon engage in cadaveric training from surgeons experienced in these techniques before introducing them into his/her clinical practice.

Arthroscopic tibiotalocalcaneal arthrodesis in neurological pathologies: outcomes after at least one year of follow up.

The main complications of open tibiotalocalcaneal arthrodesis are wound healing disorders and nonunion. Our hypothesis was that arthroscopy and interlocking intramedullary nailing decrease these complications. We retrospectively reviewed six patients (mean age: 58 years; mean preoperative Kitaoka score: 51/100) having undergone arthroscopic tibiotalocalcaneal arthrodesis with retrograde intramedullary nailing between January and November 2011 for equinus deformity of the hindfoot and subtalar instability of neurological origin. Postoperative pain disappeared completely in four cases, one patient presented some pain associated with projection of the proximal locking screw head under the skin and the remaining patient presented fibular tendinitis that resolved after infiltration of anti-inflammatory drugs. The mean postoperative Kitaoka score was 64/100. None of the patients presented any wound healing complications or nonunion. The observed incidence of wound complications and bone consolidation disorders after tibiotalocalcaneal arthrodesis was lower than the ones reported for open tibiotalocalcaneal arthrodesis. Level of clinical evidence IV: retrospective case series.

Percutaneous Surgery of the Forefoot.

This article describes some of the common techniques used in percutaneous surgery of the forefoot. Techniques such as minimally invasive chevron Akin osteotomy for correction of hallux valgus, first metatarsophalangeal joint cheilectomy, distal minimally invasive metatarsal osteotomies, bunionette correction, and hammertoe correction are described. This article is an introduction to this rapidly developing area of foot and ankle surgery. Less invasive techniques are continually being developed across the whole spectrum of surgical specialties. The surgical ethos of minimizing soft-tissue disruption in the process of achieving surgical objectives remains at the center of this evolution.

Minimally Invasive Surgery Osteotomy of the Hindfoot.

A minimally invasive surgical approach has been developed for hindfoot as well as forefoot procedures. Percutaneous techniques have been evolving for more than 20 years. Many conventional surgical techniques can be performed percutaneously after training. Percutaneous surgical techniques require knowledge specific to each procedure (eg, percutaneous Zadek osteotomy or percutaneous medial heel shift). In the treatment and correction of the hindfoot pathology the surgeon now has percutaneous options including medial or lateral heel shift, Zadek osteotomy, and exostectomy with/without arthroscopy.

Radiological study of the knee joint line position measured from the fibular head and proximal tibial landmarks.

Restoring the joint line level is one of the surgical challenges during revision of total knee arthroplasty. The position of the tibial surface is commonly estimated by its distance to the apex of fibular head, but no study evaluating this distance accurately has been published yet. The purpose of this work was to study the distance between the knee joint line and the apex of the fibular head and the proximal tibia, particularly the tibial tuberosity. Variability with clinical data and relations with other local measurements have been evaluated on knee radiographs (an antero-posterior view, a medio-lateral view and an anteroposterior full length view) of 100 subjects (125 knees). Results showed no correlation between the joint line-fibular head apex distance and any clinical data of the patients, or any other performed measurements. Relations between tibial measurements and the sexe or the height of the subjects were noted. Besides, the review of the 25 bilateral cases did not show statistically significant side difference but the descriptive analysis showed too large discrepancies for the joint line-fibular head apex distance to be used as a landmark. We conclude that the fibular head apex cannot be used as a morphologic landmark to determine the knee joint line position. Its interest in clinical and surgical practice must be discussed.

Comparative in vitro assessment of the primary stability of cementless press-fit acetabular cups.

Long-term stable osseointegration of porous-coated acetabular cups depends on bony ingrowth within their porous surface. For ingrowth to take place, one must ensure rigid initial fixation of the implant, by means of screws or by impaction or using a threaded ring. Primary stability is a prerequisite for long term stability through bony ingrowth. We tested several cups commonly used in our department to assess their primary stability. The study was done using synthetic EP-Dur polyurethane resin blocks (Bayer, Leverkusen, Germany). The blocks were fixed at a 45 degrees angle to the horizontal. They were subsequently reamed using the appropriate reamers and the cups tested were impacted into the resin blocks. Eleven 52-mm cups were tested. The pull out force necessary to extract each cup was measured. The pull-out strength ranged from 7.63 to 55.46 Nm. We noted that the closer the cup was to a hemisphere, the better was the initial stability. The contact zone was at the periphery, and the greater the contact was with the resin, the better was the stability. Micromovements exceeding 150 microns prevent any bony ingrowth in vivo. Solid osseointegration can thus only be achieved if movements between implant and bone can be prevented. Our study indicated that initial fixation is essentially peripheral and that those cups that demonstrated the highest pull-out values also had the best peripheral contact. Our observations suggest that the geometry of the cup is more important than its surface macrostructure in terms of primary stability. To achieve stable fixation, we recommend using an oversized cup with a flattened dome to allow maximum peripheral contact.

Degenerative lesions of the plantar fascia: surgical treatment by fasciectomy and excision of the heel spur. A report on 38 cases.

The authors studied 38 cases of degenerative lesions of the plantar fascia which were treated surgically between 1989 and 1999. MRI showed chronic fasciitis in eight cases and an old rupture of the plantar fascia in 30 cases. Surgical treatment, which was performed in all cases after failure of conservative treatment of several months duration, combined excision of the fascia with resection of the heel spur. Histological examination found inflammation in all cases (fasciitis or rupture), calcification of the aponeurosis in four cases, cartilaginous metaplasia in four and fibromatosis in four. Patients were assessed a minimum of one year and a maximum of seven years after operation. The postoperative results were assessed using three criteria: resolution of pain, results on the static foot and patients' functional activity. Overall there were 24 very good and good results, nine fair and five poor. MRI performed at the time of follow-up revealed good healing of the plantar fascia in 16 cases, defects in two cases, inflammation in seven cases and defects associated with inflammation in 13 cases. Surgical treatment may be considered in cases where conservative treatment of talalgia has failed. Symptoms originating from degenerative damage to the plantar fascia, such as rupture or fasciitis, may benefit from fasciectomy. Short-term results show resolution of pain in 75% of cases, and a slight sagging of the plantar arch. Pre-operative MRI study is useful to determine the exact location of the lesions.