Plate fixation after lengthening with an external fixator in patients with achondroplasia : A comparative study between two centers.

BACKGROUND: This study compared internal fixation with a plate after lengthening (PAL) with an external fixator with the conventional method (CM) in terms of radiologic and clinical outcomes in the lower extremities of patients with achondroplasia. METHODS: In this study 20 patients (50 lower extremity long bones) who underwent PAL or CM were divided into 2 cohort groups. The amount of lengthening, percentage lengthening, external fixator index (EFI), external fixator time, Li regeneration index, complication rate, and knee range of motion (ROM) were compared between the groups. RESULTS: The median age was 9.4 years (range 6-16 years) in the PAL group and 12 years (range 9-16 years) in the CM group (p = 0.01). Males comprised 80% of the patients in the PAL group and 47% of the patients in the CM group (p = 0.02). The median amount of lengthening in the PAL and CM groups was 7.5 cm (range 5.5-9.5 cm) and 6.0 cm (range 5.5-9.0 cm), respectively (p < 0.01). The median percentage of lengthening in the PAL and CM groups was 44.6% (range 20.0-70.1%) and 43.0% (range 20.5-57.3%), respectively (p = 0.01). The median external fixator time in the PAL and CM groups was 127 days (range 94-185 days) and 180 days (range 105-355 days), respectively (p < 0.01). The median EFI in the PAL and CM groups was 21 days/cm (range 10-33 days/cm) and 27 days/cm (range 15-59 days/cm), respectively (p < 0.01). The Li regeneration index was 3 (interquartile range, IQR 2-4) in both groups (p = 0.2). The total complication rate was similar between the groups. CONCLUSION: In patients with achondroplasia, after lengthening with an external fixator, internal fixation with a plate can be a reliable alternative to the conventional method. LEVEL OF EVIDENCE: Level III therapeutic.

Lengthening of short bones by distraction osteogenesis--results and complications.

We performed bone lengthening surgery on 12 metacarpals and 14 metatarsals of 15 patients. The mean age for metacarpal and metatarsal lengthening was 14.5 (10-21) and 17.5 (10-25) years, respectively. We used a unilateral or a circular external fixator. The mean healing index of the metacarpals and metatarsals was 1.6 (1.1-2.3) and 1.6 (1.0-2.0) months/cm, respectively. The mean increase in metacarpal and metatarsal length was 17.6 (13-26) and 24.3 (20-30) mm, respectively. The functional scores of the metatarso-phalangial (MTP) joint of lengthened metatarsals for the lesser toe were excellent in 12 and good in two cases based on the American Orthopaedic Foot and Ankle Society (AOFAS) scoring system. Complications were seen in six of the metatarsal lengthening cases including four angulations, one subluxation and one non-union. We conclude that the periosteum must be protected with percutaneous osteotomy and lengthening should be performed at a rate of 0.25 mm twice a day and should not exceed 40% of the original bone length (or >20 mm).

Correction of ankle and hindfoot deformities by supramalleolar osteotomy.

Ankle and hindfoot deformities in 11 patients with a mean age of 15 (range, four to 35) have been gradually corrected by an llizarov external fixator. In all patients, supramalleolar osteotomy was utilized by percutaneous drilling and osteotomy technique. The patients were evaluated clinically by the AOFAS scoring system and radiologically by malorientation and malalignment tests described by Paley. The purpose of the current study is to evaluate the efficacy of supramalleolar osteotomy and correction by an Ilizarov device in treating hindfoot and ankle deformities. The mean external fixation period was five (2.5 to eight) months. The mean interval between the operation and last follow-up examination was 19 (13 to 26) months. The patients improved an average of 30 points after the operation regarding to AOFAS score. A plantigrade foot was achieved in the whole group. Radiologically, no malalignment or malorientation was measured. Equal leg lengths were achieved in all nine patients with one exception. Complications were graded after Paley as minor problems in 11 patients and as obstacles requiring surgical interventions in four patients. Sequelae remained in only one patient. Ankle and hindfoot deformities caused by various etiologies are complicated by poor soft tissue condition and a short foot. A supramalleolar osteotomy and Ilizarov external fixator can safely and effectively correct these deformities.

[Bone lengthening of congenitally short metacarpus and metatarsus by the callus distraction technique]. / Dogustan metakarp ve metatars kisaliklarinin kallus distraksiyonu yöntemi ile uzatilmasi.

OBJECTIVES: We evaluated the results of lengthening of congenitally short metacarpus and metatarsus by the callus distraction technique. METHODS: We treated congenitally short metacarpus (n=7) and metatarsus (n=4) of five patients (4 females, 1 male; mean age 15 years; range 10 to 21 years) by callotasis. Callus distraction was performed with the use of mini-Orthofix or Ilizarov type semicircular external fixators. The distraction rate was 0.25x2 mm/day for both types. The mean follow-up period was 23 months (range 12 to 33 months). RESULTS: The mean metacarpal and metatarsal lengthenings were 20 mm (range 15 to 25 mm) and 25 mm (range 20 to 30 mm), respectively. The mean healing index was 1.4 months/cm for metacarpal lengthening, and 1.8 months/cm for metatarsal lengthening. No neurovascular complications were encountered. One patient required autogenous fibular grafting for union. Pin tract infections were found in three patients. The overall complication rate was 36%. CONCLUSION: Callotasis is an effective and reliable method for lengthening of short metacarpal and metatarsal bones. In addition, it preserves the periosteal bone tissues, which has a favorable effect on the duration of treatment.

[Opening focal dome osteotomy in the treatment of varus gonarthrosis associated with medial laxity]. / Medial gevsekligin eslik ettigi varus gonartroz tedavisinde açici fokal-kubbe osteotomisi.

OBJECTIVES: We evaluated the short-term results of opening focal dome osteotomy in the treatment of varus gonarthrosis associated with medial laxity. PATIENTS AND METHODS: Seventeen knees of 16 patients with varus gonarthrosis associated with medial laxity (15 females, 1 male; mean age 51.6 years; range 45 to 58 years) were managed with opening focal dome osteotomy in our clinic between September 2003 and July 2006. The patients were evaluated for alignment of the lower extremities and medial laxity before and after the operation and were also evaluated clinically by Knee Society (KS) knee scores and Hospital for Special Surgery (HSS) knee scores. RESULTS: Mean follow-up was 27 months (range 12 to 44 months). Postoperatively, an average 13.8+/-3.3 degrees mechanical femuro-tibial angle (mFTA) correction was achieved (p=0.001). Average preoperative mechanical varus was 9.9+/-3.1 degrees whereas the mean postoperative mechanical valgus was 3.9+/-0.8 degrees (p=0.001). An average 2.6+/-1.2 mm reduction in medial laxity was ensured. Preoperative joint line convergence angle with a mean of 6.2+/-1.7 degrees was reduced to 3.2+/-1.1 degrees postoperatively which was statistically significant (p=0.002). Preoperative KS knee scores and function scores were 49+/-9 and 44+/-11 respectively whereas postoperative these values were 89+/-6 and 84+/-8 respectively. These values represent an average of 40+/-12 improvement (p=0.001). Pre- and postoperative HSS scores were 61+/-8 and 88+/-7 respectively representing an average of 27+/-11 improvement (p=0.001). CONCLUSION: Medial laxity is observed in a majority of patients with varus gonarthrosis. Opening focal high tibia dome osteotomy can achieve a correction in the mechanical alignment and also decreases medial laxity effectively in knees with varus gonarthrosis.

Comparison of intra-articular hyaluronic acid injections and mud-pack therapy in the treatment of knee osteoarthritis.

OBJECTIVES: Conservative treatment should be tried prior to surgical treatment in knee osteoarthritis. This study was designed to evaluate the short-term effects of mud-pack therapy on pain relief and functional improvement in knee osteoarthritis in comparison with intra-articular hyaluronic acid injections. METHODS: The study included 23 patients who were diagnosed as having knee osteoarthritis according to the ACR (American College of Rheumatology) criteria, and had complaints lasting for more than three months. All the patients had stage 2 or 3 osteoarthritis radiographically according to the Kellgren-Lawrence criteria. Twelve patients (3 males, 9 females; mean age 54+/-6 years; range 46 to 67 years) received mud therapy bilaterally. Mud packs were heated to 45 degrees C and applied on both knees for 30 minutes daily for a total of 12 weekdays. Eleven patients (2 males, 9 females; mean age 53+/-9 years; range 40 to 66 years) received a total of three bilateral intra-articular hyaluronic acid injections, each interspersed by weekly intervals. The patients were evaluated before and after treatment in terms of pain and functionality using the pain subscale of the WOMAC (Western Ontario and McMaster Universities) osteoarthritis index, Hospital for Special Surgery (HSS) score, and Knee Society clinical rating system (knee and function scores). The patients were followed-up for a mean of 5.9+/-6.3 months (range 4 to 8 months) after mud-pack therapy, and 5.8+/-0.8 months (range 5 to 7 months) after intra-articular hyaluronic acid injections. RESULTS: No significant differences were found between the two groups with respect to pre-and posttreatment WOMAC, HSS, and knee and function scores (p>0.05). The scores of all instruments showed significant improvements following treatment in both groups (p<0.001). Posttreatment changes in relation to baseline scores did not differ significantly between the two groups (p>0.05). CONCLUSION: Treatment of knee osteoarthritis with intra-articular hyaluronic acid injections or mud-pack therapy yielded similar results in the short-term in terms of functional improvement and pain relief. Mud-pack therapy is a noninvasive, complication-free, and cost-effective alternative modality for the conservative treatment of knee osteoarthritis.

[Total hip arthroplasty using the anterolateral minimally invasive approach]. / Minimal invaziv anterolateral teknikle total kalça protezi.

OBJECTIVES: We evaluated the clinical and radiographic results of total hip arthroplasties (THA) performed with the minimally invasive anterolateral (MIA) and standard anterolateral (SA) approaches. METHODS: We retrospectively reviewed 25 patients (17 women, 8 men; mean age 57.7+/-12.5 years) and 15 patients (11 women, 4 men; mean age 68.9+/-5.5 years) who underwent THA with the SA and MIA approaches, respectively. The mean body mass index was 32.5+/-5.8 kg/m2 in the SA group and 28.7+/-2.7 kg/m2 in the MIA group. The two groups were compared with respect to blood loss, operation time, blood transfusions, and length of hospital stay. Pain was assessed with a visual analog scale (VAS), and functional results were assessed with the Harris hip score (HHS). The SF-36 questionnaire was administered pre- and postoperatively. Radiographic evaluations included femoral and acetabular components and signs of loosening. The mean follow-up was 25.2+/-8.7 months in the SA group and 26.1+/-7.2 months in the MIA group. RESULTS: The amount of blood loss and blood transfusions were significantly reduced and length of hospital stay was significantly shorter in the MIA group (p<0.001). The mean operation time did not differ between the two groups (p>0.05). Improvements in the VAS and HHS scores were significantly better in the MIA group (p<0.001). Similarly, improvements in all the SF-36 subscales other than general health, mental health, and role-physical subscales were significantly greater in the MIA group. Radiographically, no signs of loosening and osteolysis were seen. Superficial or deep wound infections did not occur. CONCLUSION: Compared to the SA approach, the MIA approach in THA operations is associated with shorter hospital stay, reduced blood loss and blood transfusions, better postoperative pain control, and higher levels of improvements in HHS and SF-36 scores.

Arthroscopic excision of the osteoid osteoma at the distal femur.

Osteoid osteoma is a benign, osteoblastic and painful tumoral lesion. Apart from en-bloc resection, intralesional resection and percutaneous excision or destruction of the nidus, arthroscopic removal of the lesion in intraarticular locations have been reported. We present a patient with osteoid osteoma at distal femur which is accessible through knee joint, treated by arthroscopic complete excision.

The advantages of circular external fixation used in high tibial osteotomy (average 6 years follow-up).

We evaluated the midterm results of high tibial osteotomy in patients with medial compartment arthritis. This study included 53 patients treated with high tibial osteotomy accompanied by either internal fixation (group A, n=26) or Ilizarov-type external fixator (group B, n=27). Clinical assessment of patients was performed using Hospital of Special Surgery scoring. Radiography was based on orientation angles of the knee (medial proximal tibial angle, lateral distal femoral angle, posterior proximal tibial angle) and mechanic axis alignment test. We used the Insall-Salvati index to determine patellar height. The mean follow-up in group A was 77 months (range 63-118) and that in group B 72 months (range 61-113). The patients of group B demonstrated better results in terms of Hospital of Special Surgery score, alignment of lower extremity, and preventing of progression of arthritis. We believe that normal alignment and orientation of the knee could be precisely established with a circular external fixator, and that some disadvantages such as patella infera, failed correction, and loss of bone in proximal tibia as observed after classic high tibial osteotomy can be avoided. Furthermore, progression of arthritis can be prevented if the mechanical axis passes through the lateral compartment of the knee.