Operative Orthopadie Und Traumatologie最新文献

Objective: Establishment of a physiological profile of the spine via reduction of the kyphotic slipped vertebra in the transverse and sagittal planes. Achieving solid fusion. Improvement of preoperative pain symptoms and prevention or elimination of neurological deficits.

Indications: High-grade spondylolisthesis (Meyerding grade 3 and 4) as well as spondyloptosis after conservative treatment and corresponding symptoms. Serious neurological deficits, hip-lumbar extensor stiffness, are emergency indications.

Contraindications (ci): Individual risk assessment must be made. Absolute CI are infections with the exception of serious neurological deficits. Multiple abdominal operations or interventions on the large vessels can be a relative contraindication for ventral intervention.

Surgical technique: For spondylolistheses of grade 3 according to Meyerding, we recommend a one-stage dorso-ventro-dorsal procedure with radicular decompression, correction and fusion in the index segment. From grade 4 according to Meyerding, reduction of the fifth lumbar vertebral body in the index segment L5/S1 is preceded by resection of the sacral dome. In cases of spondyloptosis, a two-stage procedure is often indicated. In this case, a screw-rod system spanning the index segment is implanted in the first step, which is used to distract the index segment for several days. Ventrodorsal reduction is performed in the second step.

Postoperative management: Axis-appropriate full mobilization from postoperative day 1. We recommend a light diet until the first defecation. Dorsal suture removal after 12 days if the wound is dry and free of irritation. Lifting and carrying heavy loads and also competitive or contact sports should be avoided for 12 weeks.

Results: From January 2000 to December 2020, a total of 43 patients with high-grade spondylolisthesis were treated in our clinic in the manner described. The Numeric Rating Scale (NRS) and the Oswestry Disability Index (ODI) improved significantly during the observation period of 3 months and 1 year. The 1‑year radiological data in 28 of the 36 patients showed complete reduction of the slipped vertebra, in 6 grade 1, and in 2 patients grade 2 according to Meyerding. Also, the kyphosis of the index vertebra was significantly corrected from a mean of 15° (0-52°) preoperatively to a lordotic profile of a mean of 4° (0-11°). No complications requiring revision were observed. One patient with preoperative cauda equina syndrome was left with right radicular sensorimotor S1 syndrome.

Conventional or digital radiography is still the basis of imaging diagnostics of the skeletal system in pediatric patients. It is considered the gold standard for diagnosis, treatment selection, and follow-up. In addition, procedures such as ultrasound, computed tomography (CT), magnetic resonance imaging (MRI), and also nuclear medicine techniques can and should be used. It is advantageous to use trained radiology technicians who are familiar with the handling of children in X‑ray diagnostics. If there is no dedicated pediatric radiology department, it is recommended to follow the guidelines from radiology societies (as low as reasonably achievable [ALARA]) and radiation protection commissions. The present article describes how state-of-the-art tools such as dose monitoring systems and software-controlled image processing and also postprocessing can be used. The article provides information on how the various modalities can be optimally used in order to achieve the best result, i.e., diagnosis, with the least possible effort and burden for the child.

Objective: Early onset scoliosis is defined as a spinal deformity originating in the first 10 years of life. Growth-preserving spinal instrumentation has therefore been designed to preserve growth of spine and chest wall and lungs to avoid serious pulmonary complications after early spine fusion. Indications, surgical technique and results of the vertical expandable prosthetic titanium rib (VEPTR) technique, traditional growing rods (TGR), and magnetically controlled growing rods (MCGR) will be described.

Indications: Indications for VEPTR are so-called mixed congenital deformities (type 3) associated with vertebral malformations in association with chest wall deformities, especially fused ribs. There are also indications for neuromuscular or syndromic early onset scoliosis with bilateral rib-to-ilium constructs. However, most of those deformities are currently treated with either GR or MCGR in most centers. GR and MCGR are currently the treatment of choice for the majority of early onset scoliosis.

Contraindications: There is no indication for growth-preserving strategies if the patients are mature or there is only little growth remaining. In these cases, final fusion should be performed.

Surgical technique: While the VEPTR technique involves an extensive approach with muscular dissections to the thoracic cage including rib osteotomies and thoracotomies, treatment with TGR or MCGR is minimally invasive, only exposing proximal and distal anchor points, leaving most of the spine including the apex undisturbed.

Postoperative management: Early mobilization is usually possible after 24-48 h. Braces may have to be prescribed for patients with osteopenia, noncompliance, or a risk to fall.

Results: Since 2005, more than 200 patients were treated with the VEPTR technique, more than 200 patients with the MCGR technique, and about 30 patients with the TGR technique in our department. Complication rates are high with all techniques including the law of diminishing returns, autofusion, bone anchor-related complications like loosening or migration of implants, failure to distract and proximal junctional kyphosis. In our own series of 13 patients below age 3 years, VEPTR proved to be effective for mixed deformities. In other studies, we were able to show that physiological growth with MCGR can be maintained for 2-3 years but spinal growth declines after that period with acceptable complications. Complication rates in most studies are lower with MCGR compared to TGR and VEPTR. Therefore, it is currently the treatment of choice for most early onset scoliosis patients.

The problem: Cementless medial unicondylar knee prostheses with mobile inlays have proved to be successful and are increasingly being used worldwide; however, there is a risk of fracture of the medial tibial plateau in the postoperative healing phase.

The solution: In most cases we observed split fractures starting from the keel of the implant. These can be treated with a small posteromedial locking plate, whereby the upper screws are inserted through the keel slot and then interlocked. This achieves an optimally strong bond between the implant and the screws and a stable construct.

Surgical technique: A longitudinal skin incision is made at the level of the keel slot. A radial T‑plate is placed subcutaneously. The plate is fixed with a lag screw in the middle section. The compression usually closes the fracture gap. Then three locking cortical bone screws are inserted through the keel slot in the transverse section of the plate. Distal fixation by locking or standard screws.

Postoperative management: Immediate pain-adapted partial weight bearing, unrestricted mobility. Healing of the fracture and full weight bearing mostly achieved after 4 weeks.

Objective: The aim of surgical treatment is fracture healing with restored alignment, rotation, and joint surface. Stable fixation allows for functional postoperative aftercare.

Indications: Displaced intra- and extra-articular fractures which either could not be adequately reduced or in which a secondary displacement is to expected due to instability criteria. The following factors are considered instability criteria: age > 60 years, female, initial dorsal displacement > 20°, dorsal comminution, radial shortening > 5 mm, palmar displacement.

Contraindications: The only absolute contraindication is if the patient is deemed unfit for surgery due to concerns regarding anesthesia. Old age is a relative contraindication, as it is currently debated whether older patients benefit from the operation.

Surgical technique: The surgical technique is guided by the fracture pattern. Palmar plating is most commonly performed. If the joint surface needs to be visualized, a dorsal approach (in combination with another approach or alone) or arthroscopically assisted fixation should be chosen.

Postoperative management: In general, a functional postoperative regime can be carried out after plate fixation with mobilization without weightbearing. Short-term splinting can provide pain relief. Concomitant ligamentous injuries and fixations, which are not stable enough for functional aftercare (such as k‑wires) require a longer period of immobilization.

Results: Provided the fracture is reduced correctly, osteosynthesis improves functional outcome. The complication rate ranges between 9 and 15% with the most common complication being tendon irritation/rupture and plate removal. Whether surgical treatment holds the same benefits for patients > 65 years as for younger patients is currently under debate.

Objectives: Distal ulna plate fixation for ulnar neck and head fractures (excluding ulnar styloid fractures) aims to anatomically reduce the distal ulna fracture (DUF) by open reduction and internal fixation, while obtaining a stable construct allowing functional rehabilitation without need for cast immobilization.

Indications: Severe displacement, angulation or translation, as well as unstable or intra-articular fractures. Furthermore, multiple trauma or young patients in need of quick functional rehabilitation.

Contraindications: Inability to surgically address concomitant ipsilateral extremity fractures, thus, limiting early active rehabilitation. Stable, nondisplaced fractures. Need for bridging plate or external fixator of distal radiocarpal joint.

Surgical technique: An ulnar approach, with a straight incision between the extensor and flexor carpi ulnaris. Preservation of the dorsal branch of the ulnar nerve. Reduction and plate fixation with avoidance of plate impingement in the articular zone.

Postoperative management: Postoperatively, an elastic bandage is applied for the first 24-48 h. In isolated DUF with stable fixation, a postoperative splint is often unnecessary and should be avoided. For the first four weeks, only light weightbearing of everyday activities is allowed to protect the osteosynthesis. Thereafter, heavier weightbearing and activities are allowed and can be increased as tolerated.

Results: The best available evidence likely shows that for younger patients with a DUF, with or without concomitant distal radius fractures, open reduction and internal fixation can be safely achieved with good functional outcome and acceptable union and complication rates as long as proper technique is ensured.

Objective: Presentation of a minimally invasive surgical approach for the treatment of scapular fractures and the clinical outcome using this technique.

Indications: Displaced extra-articular fractures of the scapula body and glenoid neck (AO 14B and 14F) and simple intra-articular fractures of the glenoid.

Contraindications: Complex intra-articular fractures and isolated fractures of the coracoid base.

Surgical technique: Make a straight or slightly curved incision along the lateral margin of the scapula leaving the deltoid fascia intact. Identify the interval between the teres minor muscle and infraspinatus to visualize the lateral column, whilst retracting the deltoid to visualize the glenoid neck. Reduce and align the fracture using direct and indirect reduction tools. A second window on the medial border of the scapula can be made to aid reduction and/or to augment stability. Small (2.0-2.7 mm) plates in a 90° configuration on the lateral border and, if required, on the medial border are used. Intra-operative imaging confirms adequate reduction and extra-articular screw placement.

Postoperative management: Direct postoperative free functional nonweight-bearing rehabilitation limited to 90° abduction for the first 6 weeks. Sling for comfort. Free range of motion and permissive weight-bearing after 6 weeks.

Results: We collected data from 35 patients treated with minimally invasive plate osteosynthesis (MIPO) between 2011 and 2021. Average age was 53 ± 15.1 years (range 21-71 years); 17 had a type B and 18 a type F fracture according the AO classification. All patients suffered concomitant injuries of which thoracic (n = 33) and upper extremity (n = 25) injuries were most common. Double plating of the lateral border (n = 30) was most commonly performed as described in the surgical technique section. One patient underwent an additional osteosynthesis 3 months after initial surgery due to pain and lack of radiological signs of healing of a fracture extension into the spine of the scapula. In the same patient, the plate on the spine of scapula was later removed due to plate irritation. In 2 patients postoperative images showed a screw protruding into the glenohumeral joint requiring revision surgery. After standardisation of intra-operative imaging following these two cases, intra-articular screw placement did not occur anymore. No patient suffered from iatrogenic nerve injury and none developed a wound infection.

Objective: Surgical treatment of intra-articular calcaneus fractures via a minimally invasive approach.

Indications: Intra-articular dislocated calcaneus fractures.

Contraindications: Fracture older than 14 days; poor soft tissue quality in the surgical area.

Surgical technique: Patient in lateral position. Identifying the anatomic landmarks. Incision (3-5 cm) from the tip of the fibula to metatarsal IV. Preparation through the subcutis. Retraction of the peroneal tendons. Preparation of the lateral calcaneal wall and later plate position via raspatory. Placement of a Schanz screw in the calcaneal tuberosity from lateral or posterior as a reduction aid for restoring of the calcaneal length and reduction of the hindfoot varus. Reduction of the sustentaculum fragment with the help of fluoroscopy from lateral. Elevation of the subtalar articular surface. Positioning of the calcaneal plate and fixation of the sustentaculum fragment by placing a cannulated screw through the long hole. Afterwards, definite internal fixation of the reduction with locking screws. Completion of the operation with final X‑rays and, if available, an intraoperative computed tomography. Wound closure with closing of the peroneal sheath.

Postoperative management: Lower leg-foot orthoses. Mobilization with partial weight-bearing of the injured foot with 15 kg for 6-8 weeks; subsequently increased load bearing.

Results: Due to the smaller incision and the associated lower soft tissue trauma, the risk of wound healing complications can be reduced. Radiographic and functional outcomes are comparable to the outcomes of calcaneal fractures treated via the extended lateral approach.