Little League Shoulder in a 15-Year-Old Male Baseball Pitcher.

A 15-year-old baseball pitcher presented to physical therapy with a 1-week history of acute right shoulder pain experienced during the acceleration phase of throwing. The week after physical therapy evaluation, the patient returned with radiographs and magnetic resonance imaging results that revealed lateral physeal widening with adjacent edema. Additionally, a nondisplaced labral tear was noted. In this case, imaging was necessary for an accurate diagnosis of lateral physeal widening, commonly referred to as "Little League shoulder." J Orthop Sports Phys Ther 2018;48(1):51. doi:10.2519/jospt.2018.7369.

Chronic lateral epiphyseal separation of the proximal tibia causes late-onset tibia vara.

An adolescent obese boy showed late-onset unilateral tibia vara associated with physeal separation (slipped epiphysis) of the lateral proximal tibia and physeal widening of the lateral distal femur. These affected physes showed normal signal intensities by MRI. He was treated with lateral hemiepiphysiodesis of the left proximal tibia and the distal femur using two parallel eight-Plates, and varus deformity rapidly improved postoperatively without recurrence. This is the first case of late-onset tibia vara caused by lateral physeal separation of the proximal tibia. Normal growth of the medial physes around the knee would contribute toward significant correction after surgery.

Epifisiolisis y hormona de crecimiento recombinante / Epiphysiolysis and recombinant growth hormone

No disponible

Traumatic atlantoaxial rotatory dislocation and displaced ossiculum terminale epiphysiolysis treated with a halo device: a case report.

INTRODUCTION: The horizontal synchondroses of the infant axis are biomechanical weak regions in trauma. CASE: We report the case of a 6-year-old girl who presented with delayed atlantoaxial dislocation and displaced ossiculum terminale epiphysiolysis after a fall from a tree. TREATMENT: The patient was treated with halo traction for 3 days after which a CT scan showed normal position of the C1/C2 joint, and an acceptable position of the ossiculum terminale whereafter a halo brace was applied. Because of delayed union on CT scans, the treatment was prolonged to a total of 21 weeks. RESULT: At final follow-up 26 months after halo brace removal, the patient demonstrated normal range of movement of the neck on clinical examination and radiographs of the cervical spine including lateral flexion/extension radiographs showed no sign of instability of the atlantoaxial joint. DISCUSSION: Conservative treatment with a halo device versus surgical treatment is discussed.

Frequency of radiographic signs of slipped capital femoral epiphysiolysis sequelae in hip arthroplasty candidates for coxarthrosis.

INTRODUCTION: The rate of osteoarthritis of the hip secondary to slipped capital femoral epiphysis (SCFE) is a subject of debate, and its frequency is underestimated in particular because of subclinical forms that may not be diagnosed during childhood. HYPOTHESIS: The frequency of radiographic anomalies subsequent to SCFE in adults requiring hip arthroplasty is higher than that reported in recent studies (6% to 15%). MATERIALS AND METHODS: A prospective single-center epidemiological radiography study was performed by one observer. Hip X-rays of patients who were being treated by arthroplasty for advanced hip osteoarthritis between January 2010 and May 2012 were analyzed. The etiology of osteoarthritis was classified in each patient according to the data obtained (primary, SCFE, dysplasia, protrusio acetabuli, other). The lateral view head-neck index (LVHNI) was used to quantify posterior translation of the femoral head, and identify SCFE sequelae. RESULTS: One hundred and eighty-six hips were included. Osteoarthritis was considered primary in 51 patients (27.4%), secondary to dysplasia in 42 (22.5%), protrusio acetabuli in 38 (20.5%) or another disease in nine (4.9%) while 46 hips (24.7%) presented a radiographic image suggesting SCFE past history. SCFE type deformities were the primary etiology of osteoarthritis in patients less than 60years old (30/84 or 35.7%). The mean age of patients in the SCFE group was 56.2years old (26-80) compared to 66 (54-91) for the primary osteoarthritis group (P<0.0001). The mean LVHNI was 13% (9-24%) in the SFCE group, the mean body mass index was 27.1kg/m(2) (±3.5; 18.2-35.4) in the SFCE group and the male to female ratio was 7.3/1. CONCLUSION: Our study identified a population with a morphological SCFE type anomaly of the coxofemoral joint (LVHNI>9%), which results in the development of earlier osteoarthritis than that found in the rest of the population. SCFE is more common than reported in the literature because it is the first etiology of osteoarthritis of the hip in subjects less than 60years old. LEVEL OF EVIDENCE: Level III. Diagnostic prospective study with a control group.

Defecto cortical postraumático. A propósito de un caso / Post-traumatic cortical defect: presentation of a case

El defecto cortical postraumático aparece 3 meses después de una fractura en tallo verde o un rodete en niños. Esta entidad es asintomática y se suele localizar proximal a las fracturas. El hueso más afectado suele ser el radio distal. Su patogénesis es controvertida, aunque parece que se debe a la acumulación de una mezcla de sangre y grasa intramedular debajo del periostio íntegro. Su diagnóstico se basa en estudios de imagen de TC y RM, y no necesitan ningún tratamiento; su resolución espontánea es lo habitual. Hay solamente 25 casos publicados en la literatura inglesa y nosotros en este trabajo presentamos uno más tras una epifisiólisis tipo ii de radio distal (AU)

Post-traumatic cortical defect appears 3 months after greenstick or torus fractures in children. This entity is asymptomatic and usually located just proximal to the fracture site. The most frequently affected bone is the distal radius. The pathogenesis of this lesion remains unclear but it seems to be caused by an intramedullary fat and blood accumulation beneath a intact periostium. Its diagnosis is based on CT and MR images and no treatment is needed, because its resolution is the rule. There are only 25 cases reported in English literature, we present another one after an epiphisiolysis in the distal radius (AU)

Slipped upper tibial epiphysis in infantile tibia vara: three cases.

We describe three cases of infantile tibia vara resulting from an atraumatic slip of the proximal tibial epiphysis upon the metaphysis. There appears to be an association between this condition and severe obesity. Radiologically, the condition is characterised by a dome-shaped metaphysis, an open growth plate and disruption of the continuity between the lateral borders of the epiphysis and metaphysis, with inferomedial translation of the proximal tibial epiphysis. All patients were treated by realignment of the proximal tibia by distraction osteogenesis with an external circulator fixator, and it is suggested that this is the optimal method for correction of this complex deformity. There are differences in the radiological features and management between conventional infantile Blount's disease and this 'slipped upper tibial epiphysis' variant.

Primary hyperparathyroidism presenting with bilateral slipped capital femur epiphysiolysis. A pictorial essay.

It has become rare to find the typical radiological manifestations of primary hyperparathyroidism like generalized osteoporosis, brown tumors and advanced bone resorption because of the generalized usage of biochemical screening techniques. We present a 17-year-old patient with a parathyroid adenoma resulting in these typical skeletal manifestation throughout the skeleton combined with secondary bilateral slipped capital femur epiphysiolysis.

Case report: Bilateral femoral neck fractures in a child and a rare complication of slipped capital epiphysis after internal fixation.

BACKGROUND: Bilateral traumatic femoral neck fractures are uncommon in children. The most commonly reported complications are nonunion, avascular necrosis of the femoral head, and chondrolysis. Slipped capital femoral epiphysis (SCFE) associated with nonunion after percutaneous partially threaded cancellous screw (PTCS) fixation of the fracture is an unreported complication. CASE DESCRIPTION: We describe a 10-year-old boy who had bilateral femoral neck fractures secondary to a fall from a height. The patient was treated with percutaneous PTCS fixation on both sides and achieved union on the right side in 3 months, however, a nonunion and SCFE developed on the left side 5 months after the initial surgery. Management of the nonunion and SCFE with PTCS and nonvascularized fibula graft led to union. Eighteen months after the initial injury, the patient achieved a pain and limp-free gait. LITERATURE REVIEW: A literature review shows avascular necrosis, posttraumatic coxa vara, premature physeal closure, nonunion, chondrolysis, infection, and implant failure as complications of operative management of femoral neck fractures. SCFE has not been previously reported. PURPOSES AND CLINICAL RELEVANCE: This case highlights the need for close followup of adolescent patients with PTCS fixation for femoral neck fractures.

[Total hip replacement after slipped capital femoral epiphysis]. / Totalna endoprotezoplastyka stawu biodrowego po zluszczeniu glowy kosci udowej.

BACKGROUND: Total hip replacement (THR) is at present an accepted treatment in patients with severe osteoarthritis of the hip after slipped capital femoral epiphysis. The aim of this paper is to evaluate the results of THR in patients suffering from secondary osteoarthritis, operated from 1987 to 2004 in the Orthopaedic and Traumatologic Department of Poznan University of Medical Sciences. MATERIAL: Material included 16 patients, 9 females and 7 males, on whom 18 THR were performed, lateral approach was used in all cases. At the time of operation, the age of patients ranged from 32 to 70 years (mean 50). THR was carried out after 33 years afterwards slippage of capital femoral epiphysis. Follow-up ranged from 6 to 23 years (mean 11 years). The operative treatment was a multistage process (during one operation only one joint was replaced). Cemented total hip arthroplasty was used during 5 of the THR, 13 of them were cementless. METHOD: The patients were clinically and radiologically evaluated preoperatively, postoperatively, and at final examination. The clinical state was evaluated with Harris hip score and WOMAC scale. We based our radiological examination on Hip Society system. RESULTS: The average preoperative Harris score for the group of patients was 32, WOMAC score 74. After an average of 11-years follow-up all hips were considered excellent, with average Harris score of 91, WOMAC Score of 6. All patients had increased function and decreased pain. The radiograms of all patients revealed that the acetabular and femoral components were correctly positioned with no radiographic evidence of loosening in the last examination. The inclination angle of the acetabular component was 22-49 degrees (mean: 36 degrees) and the acetabular opening angle was 0-10 degrees (mean: 4 degrees). The stem was valgus-oriented in 1 hip, and neutral-oriented in 17 hips. No ectopic ossification concentrations were found. CONCLUSION: . Clinical and radiological evaluation of our material showed that total hip replacement in the treatment of osteoarthritis secondary to slipped capital femoral epiphysis allows regaining good lower limb function, which helps the patients staying less dependant on the surrounding environment. The results of THR are good regardless of the type of prosthesis and the type of fixation. Importantly, THR was carried out after a quite long time after slippage of capital femoral epiphysis.

Deformidad en varo del tobillo del niño: corrección mediante fijación externa / Varus deformity of the ankle in a child: correction using external fixation

Introducción y objetivo. La deformidad en varo del tobillo durante la infancia es una secuela no infrecuente tras una epifisiolisis de tibia distal o una infección de esta zona durante la infancia. Los autores revisan los casos tratados mediante fijación externa. Material y métodos. Se revisaron de forma retrospectiva 14 casos de tobillo varo estudiados clínica y radiológicamente mediante telerradiografía anteroposterior de EEII en bipedestación y tratados mediante fijación externa monolateral. Se analizó la causa de la deformidad, su magnitud, procedimiento empleado, complicaciones y cierre precoz de fisis tras el tratamiento. Resultados. Se revisaron retrospectivamente todos los casos de tobillo varo, siendo las causas más frecuentes de deformidad en varo del tobillo durante la infancia: las epifisiolisis de la porción medial de la tibia distal (lesiones SH II, III o IV), infección de tibia distal y sepsis. Hubo dos casos de epifisiolisis tipo II, tres de tipo III y tres de tipo IV. Los métodos de corrección empleados fueron en cuatro casos la distracción fisaria cuando había fisis abierta o la osteotomía metafisaria distal y callotasis posterior en ocho casos. En dos se realizó la corrección de forma aguda asociando otro método de tratamiento para corregir una discrepancia concomitante. En todas las callotasis se realizó osteotomía del peroné, fijándolo con aguja de Kirschner excepto en tres casos. Las complicaciones más frecuentes fueron infecciones alrededor de los tornillos y desplazamiento ad-latum. Discusión y conclusiones. En esta serie se han obtenido buenos resultados en el tratamiento de la deformidad en varo del tobillo del niño mediante la condrodiastasis, la osteotomía y la callotasis. La distracción fisaria antes de alcanzar la madurez esquelética puede ser el método de elección. Si se realiza precozmente es presumible el cierre precoz del resto de fisis fértil. Si el tratamiento es hemicallotasis es recomendable además de la osteotomía del peroné su fijación intramedular con aguja de Kirschner (AU)

Introduction and objective. Varus deformity of the ankle during infancy is a not uncommon after effect after epiphysiolysis of the distal tibial or an infection in this area during childhood. The authors review the cases treated using external fixation. Material and methods. A retrospective review was made of 14 cases of varus ankle clinically and radiologically studied using lower limb antero-posterior teleradiography in the standing position and treated using monolateral external fixation. The cause of the deformity, its magnitude, procedure employed, complications, and premature physeal closure after treatment. Results. All cases of varus ankle were retrospectively reviewed, with the most frequent cause of the deformity in ankle varus during infancy being epiphysiolysis of the middle portion of the distal tibia (SH II, III or IV lesions), distal tibia infection or sepsis. There were two cases of epiphysiolysis type II, three of type III, and three of type IV. The methods of correction employed were, physeal distraction when the physis was open in four cases, and distal metaphyseal osteotomy and subsequent callus distraction in eight cases. In two cases correction was performed acutely combining another treatment method to correct a concomitant discrepancy. The callotasis was performed on all of them using fibular osteotomy, fixing it with a Kirschner wire, except in three cases. The most frequent complications were infections around the screws and ad-latum displacement. Discussion and conclusions. Good results have been obtained in this series of varus deformity of the ankle in the child by means of physeal distraction, osteotomy and callotasis. Physeal distraction before reaching skeletal maturity may be the method of choice. If it is performed earlier the premature closure of the rest of the fertile physis is likely. If the treatment is hemicallotasis, besides the fibular osteotomy, intramedullary fixation with a Kirschner wire is also recommended (AU)

Avaliação da apresentação de sinais e sintomas de impacto femoroacetabular após epifisiólise do fêmur proximal / Evaluation of presentation of signs and symptoms of femoroacetabular impingement after epiphysiolysis of the proximal femur

OBJETIVO: Neste trabalho, procuramos avaliar se existe relação entre o grau de deslizamento da epifisiólise femoral proximal (EFP) e a presença de impacto femoroacetabular (IFA). Ainda, analisou-se o arco de movimento do quadril (ADM) em relação ao IFA, além de revisar a literatura sobre o assunto. MÉTODO: Foram analisados 19 casos de EFP em 15 pacientes tratados cirurgicamente com epifisiodese in situ com um parafuso canulado, com seguimento médio de 27 meses. Realizou-se a análise do grau de deslizamento da EFP pelos ângulos epimetafisário (âEM) e coloepifisário (âCE) da radiografia em perfil, dos sinais de impacto radiográficos na incidência anteroposterior, dos sintomas clínicos e do ADM do quadril. RESULTADOS: Evidenciou-se que o grau de deslizamento da EFP (através do âEM) apresenta relação inversa estatisticamente significante com a presença de IFA no período médio de seguimento deste estudo. Ou seja, os pacientes que demonstraram um quadro sintomático de IFA apresentaram graus menores de deslizamento. Isso pode ser explicado pelo fato que o tipo de impacto que ocorre na EFP (came de inclusão ou de impacção) depende do grau de deslizamento, e estes se apresentam de forma e cronologia diferentes. O ADM do quadril não apresentou relação com o IFA. CONCLUSÃO: Há relação entre o grau de deslizamento e a presença de IFA clínicoradiológica após EFP.

OBJECTIVES: In this study, we sought to evaluate whether there is any relationship between the degree of epiphysiolysis of the proximal femur (EPF) and the presence of femoroacetabular impingement (FAI). Hip range of motion (ROM) was also analyzed in relation to FAI, and the literature on this topic was reviewed. METHODS: Nineteen cases of EPF in fifteen patients who had been treated surgically by means of in situ epiphysiodesis with a cannulated screw were evaluated. The mean follow-up was 27 months. The degree of EPF was analyzed using the epimetaphyseal and neck-epiphyseal angles on lateral-view radiographs, the radiographic signs of FAI on anteroposterior-view radiographs, clinic symptoms and hip ROM. RESULTS: It was found that the degree of EPF (through the epimetaphyseal angle) presented a statistically significant inverse relationship with the presence of FAI over the mean follow-up period of this study. In other words, the patients with symptoms of FAI presented lesser degrees of slippage. This can be explained by the fact that the types of impingement that occurs in cases of EPF (i.e. cam impaction or inclusion) depends on the degree of slippage, and these present different clinical forms and chronology. The ROM did not present any relationship with FAI. CONCLUSION: There is a relationship between the degree of slippage and the presence of clinical-radiological FAI after EPF.

Osteotomía cervical cuneiforme femoral para el tratamiento de la secuela de epifisiolisis / Cuneiform osteotomy of femoral neck as treatment for slipped capital femoral epiphysis sequelae

Introducción. La alteración anatómica de la epifisiolisis no tratada, prototipo de la deformidad del pinzamiento femoro-acetabular tipo cam, causa degeneración articular precoz de la cadera. Objetivo. Describir una técnica original de osteotomía cervical cuneiforme (OCC) para reposicionar anatómicamente la epífisis femoral, en la secuela de epifisiolisis. Material y método. Se operaron 7 caderas en 6 pacientes masculinos, con secuela de epifisiolisis severa; edad promedio de 15 años (13-16), cuyo motivo de consulta fue coxalgia y claudicación severa de 9,2 meses promedio. Todos con cierre del cartílago fisiario femoral al momento de la consulta. Técnica quirúrgica y resultados . En todos los casos se efectuó una OCC y reposición de la epífisis femoral. Se realizó disección y elevación del periostio cervical para proteger los vasos epifisiarios de la cabeza femoral; a continuación se ejecutó la OCC, se reposicionó la epífisis femoral en la ubicación anatómica y se realizó una osteosíntesis. Se logró una corrección del ángulo eje epifisiario desde 66° preoperatorio a 11° postoperatorio. El seguimiento promedio fue 37 meses (4-59). Conclusión. La OCC femoral, propuesta en pacientes con secuela de epifisiólisis, es una alternativa de tratamiento, que logra buenos resultados anatómicos y radiológicos en pacientes jóvenes (AU)

Introduction: Abnormal hip anatomy of untreated Slipped Capital Femoral Epiphysis (SCFE), a prototype of cam impingement deformity, is a cause of early hip degeneration. Objective: To describe an original technique of cuneiform osteotomy of the femoral neck to relocate femoral epiphysis in patients with sequelae of SCFE. Methods: Seven hips in 6 male patients with sequelae of severe SCFE, with a mean age of 15 years (13-16), and with a mean of 9.2 months of hip pain and severe limp, were treated. All of the cases had closed growth cartilage at the time of consultation. Surgical technique and results: In all cases we performed a cuneiform osteotomy of the femoral neck with relocation of epiphysis. A dissection and elevation of cervical periosteum to protect the epiphyseal vessels of the femoral head was performed. Then, the cuneiform osteotomy of the femoral neck was performed with relocation of the femoral epiphysis to the anatomical position and osteosynthesis. We achieved an epiphyseal-shaft angle correction from 66◦ preoperative to 11◦ postoperative. The mean follow up was 37 months (4-59). Conclusion: Cuneiform osteotomy of the femoral neck proposed in patients with sequelae of SCFE is an alternative treatment that achieves good anatomical and imaging results in young patients (AU)

Slipped capital femoral epiphysis in an adult with panhypopituitarism.

Slipped capital femoral epiphysis usually occurs in children going through a pubertal growth spurt, possibly because the immature proximal femoral physis is unable to bear the shear stress. It commonly occurs in adolescents between 10 and 16 years. Slipped capital femoral epiphysis in adults is uncommon, with only 10 cases reported in the literature. This article presents a case of a 29-year-old man with craniopharyngioma diagnosed when he was 19. He underwent surgery with subtotal tumor excision and postoperative radiotherapy, but received no further treatment for the panhypopituitarism concomitant with the tumor. He reported sudden onset of left hip pain after riding a bicycle and underwent surgical fixation 5 days later. He also underwent hormone replacement therapy, including prednisolone, thyroxin, desmopressin, and testosterone, and regular clinical follow-up. His hip function recovered with a painless gait. At 18-month follow-up, neither osteonecrosis nor contralateral slipped capital femoral epiphysis was noted. Furthermore, bilateral proximal femoral physes were also closed. For stable slippage as in this case, in situ pinning fixation is a commendable method. A high index of suspicion of endocrinal disorder and proper management are essential for successful treatment of adult slipped capital femoral epiphysis.

Assessment of early cartilage degeneration after slipped capital femoral epiphysis using T2 and T2* mapping.

BACKGROUND: T2 and T2* mapping are novel tools to assess cartilage quality. PURPOSE: To evaluate hip cartilage quality in the long-term follow-up of patients with slipped capital femoral epiphysis (SCFE) with T2 and T2* mapping. MATERIAL AND METHODS: Thirty-three patients (19 men, 14 women, mean age 24 ± 6.0 years, range 18-51 years) with a history of SCFE in 41 hips and 10 healthy controls (seven men, mean age 22 ± 4 years) were included. Follow-up period was 12 ± 6 (range 4-39 years) years. Coronal T2 and T2* mapping were performed on a 1.5 T scanner. T2 and T2* values of the hip articular cartilage were determined in the medial, central, and lateral portion of the hip within the weight bearing zone. Clinical symptoms including pain were assessed with the Harris hip score. Statistical analysis was performed using Mann-Whitney U test and Spearman rank sum test. RESULTS: In hips after SCFE T2 (central portion: 25.71 ms ± 4.84 ms vs. 29.71 ms ± 7.04 ms, p<0.05) and T2* (central portion: 20.76 ms ± 3.17 ms vs. 23.06 ms ± 2.68 ms, P<0.01) of cartilage were significantly lower, compared to controls. The differences were most apparent in the lateral portion of the hip articular cartilage. Abnormal cartilage T2 and T2* were not associated with hip pain or impaired hip function. SCFE was unilateral in 23 cases (70%). In the patients' unaffected hips without SCFE, areas of significantly reduced T2 (central portion: 26.07 ms ± 4.27 ms, P<0.05) and T2* (lateral portion: 23.23 ms ± 2.45 vs. 25.11 ms ± 3.01 ms, P<0.05) were noted. CONCLUSION: T2 and T2* mapping of the hip in patients after SCFE are significantly different from healthy controls and may offer additional information about cartilage quality.

Operative treatment of avascular necrosis of the femoral head after slipped capital femoral epiphysis.

PURPOSE: The aim of the study was assessment of the medium-term outcome of operative treatment of avascular necrosis of the femoral head (ANFH) after slipped capital femoral epiphysis (SCFE). MATERIALS AND METHODS: Five patients were treated with valgus-flexion intertrochanteric osteotomy (VFITO) for partial ANFH that developed after operative treatment. Their average age at the time of slip was 12.5 years (range, 10-14); at the time of the reconstructive operation 14 years (range, 12-16), the average interval between slip and the reconstructive operation was 14 months (range, 9-18). Partial ANFH was diagnosed between 6 and 8 months after the slip on the basis of radiographic examination. In all the patients, the anterolateral third up to half of the femoral head was always affected. The average follow-up period was 73 months (range, 60-84). RESULTS: Comparison of MRI scans before and after VFITO proved resorption of the necrotic segment of the femoral head and its remodeling in all the five patients. The average preoperative Harris hip score (HHS) was 86 points, the average postoperative HHS was 94 points. CONCLUSION: VFITO provides a good outcome at medium-term follow-up in adolescent patients with partial ANFH after SCFE.

Avascular necrosis most common indication for hip arthroplasty in patients with slipped capital femoral epiphysis.

BACKGROUND: Recently, much attention has been focused on the prevention of arthritis after slipped capital femoral epiphysis (SCFE). Little, however, is published on which subset of SCFE patients eventually require hip replacement, how soon arthroplasty is required, and the long-term outcomes after arthroplasty. METHODS: A hip registry database at a tertiary referral center was searched for all primary hip arthroplasties in patients with a confirmed childhood diagnosis of SCFE. RESULTS: From 1954-2007, 38 hips in 33 patients underwent arthroplasty, including total hip arthroplasty (28), hip resurfacing (8), and hemiarthroplasty (2) for the diagnosis of SCFE. During this time period, over 33,000 primary total hip arthroplasties were carried out at our center. Underlying diagnoses included avascular necrosis or chondrolysis in 25 hips and degenerative changes and/or impingement in 13 hips. The slip severity in 20 cases was severe, 4 moderate, 7 mild, and 7 hips had unknown slip severity. Half of the slips (7/14) in the degenerative group were mild or moderate. Fourteen (70%) of the 20 severe slips and 10 (71%) of the 14 acute or acute-on-chronic slips presented for arthroplasty with the diagnosis of avascular necrosis. Avascular necrosis was associated with a severe slip (P=0.03) and an acute or acute-on-chronic presentation (P=0.008). With the exception of 2 mild slips treated nonoperatively, all slips underwent either pin fixation (27) or primary osteotomy (9). Mean time from slip to arthroplasty was 7.4 years in patients with AVN or chondrolysis, compared with 23.6 years in patients with degenerative change (P<0.0002). Mean age at arthroplasty was 20 years in the AVN or chondrolysis group compared with 38 years in the degenerative group (P<0.0001). Sixteen hips required revision arthroplasty at a mean of 11.6 years postoperatively, most commonly for component loosening and/or polyethylene wear. Kaplan Meier 5-year survival free from revision for all causes was 87% overall and 95% in the total hip arthroplasty subset. CONCLUSIONS: The majority of hip arthroplasties in patients with slipped capital femoral epiphysis were carried out for the indication of avascular necrosis rather than degenerative changes related to femoroacetabular impingement. We found a moderately high revision rate in SCFE patients undergoing total hip arthroplasty or other joint replacement. LEVEL OF EVIDENCE: IV, case series.