1.Measurement of Clavicle Fracture Shortening Using Computed Tomography and Chest Radiography.
Reza OMID ; Chris KIDD ; Anthony YI ; Diego VILLACIS ; Eric WHITE
Clinics in Orthopedic Surgery 2016;8(4):367-372
BACKGROUND: Nonoperative management of midshaft clavicle fractures has resulted in widely disparate outcomes and there is growing evidence that clavicle shortening poses the risk of unsatisfactory functional outcomes due to shoulder weakness and nonunion. Unfortunately, the literature does not clearly demonstrate the superiority of one particular method for measuring clavicle shortening. The purpose of this study was to compare the accuracy of clavicle shortening measurements based on plain radiographs with those based on computed tomography (CT) reconstructed images of the clavicle. METHODS: A total of 51 patients with midshaft clavicle fractures who underwent both a chest CT scan and standardized anteroposterior chest radiography on the day of admission were included in this study. Both an orthopedic surgeon and a musculoskeletal radiologist measured clavicle shortening for all included patients. We then determined the accuracy and intraclass correlation coefficients for the imaging modalities. Bland-Altman plots were created to analyze agreement between the modalities and a paired t-test was used to determine any significant difference between measurements. RESULTS: For injured clavicles, radiographic measurements significantly overestimated the clavicular length by a mean of 8.2 mm (standard deviation [SD], ± 10.2; confidence interval [CI], 95%) compared to CT-based measurements (p < 0.001). The intraclass correlation was 0.96 for both plain radiograph- and CT-based measurements (p = 0.17). CONCLUSIONS: We found that plain radiograph-based measurements of midshaft clavicle shortening are precise, but inaccurate. When clavicle shortening is considered in the decision to pursue operative management, we do not recommend the use of plain radiograph-based measurements.
Clavicle*
;
Humans
;
Methods
;
Orthopedics
;
Radiography*
;
Shoulder
;
Thorax*
;
Tomography, X-Ray Computed
;
X-Ray Film
2.Neurological Recovery in Two Patients with Cauda Equina Syndrome Secondary to L5 Lumbar Spine Giant Cell Tumour after Treatment with Denosumab without Surgery.
Simret Singh RANDHAWA ; Angel Khor Nee KWAN ; Chee Kidd CHIU ; Chris Yin Wei CHAN ; Mun Keong KWAN
Asian Spine Journal 2016;10(5):945-949
We report two patients with cauda equina syndrome (CES) secondary to L5 giant cell tumour (GCT) who achieved good neurological recovery after treatment with denosumab without surgery. The first patient was a 26-year-old man with L5 GCT causing CES who regained bowel and urinary control, muscle power improvement from grade 2 to grade 4 and Oswestry disability index (ODI) improvement from 48 to 23 after denosumab treatment. The second patient was a 25-year-old woman with L5 GCT causing CES who regained bowel and urinary control, muscle power improvement from grade 0 to grade 4 and ODI improvement from 42 to 20 after denosumab treatment. The usage of denosumab in the treatment of patients with CES due to GCT allows potential neurological recovery without any surgical intervention. If surgery is not contraindicated, more time is obtained to prepare the patient preoperatively to attain safer surgery and to achieve complete tumour clearance.
Adult
;
Cauda Equina*
;
Denosumab*
;
Female
;
Giant Cells*
;
Humans
;
Polyradiculopathy*
;
Spine*
3.APSS-ASJ Best Clinical Research Award: Is There a Difference between Patients' and Parents' Perception of Physical Appearance in Adolescent Idiopathic Scoliosis?
Chris Yin Wei CHAN ; Siti Mariam Abd GANI ; Min Yuen LIM ; Chee Kidd CHIU ; Mun Keong KWAN
Asian Spine Journal 2019;13(2):216-224
STUDY DESIGN: Prospective study. PURPOSE: To compare Patients' and parents’ perceptions of physical attributes (PAs) of adolescent idiopathic scoliosis (AIS) patients and to report any correlations between their perceptions and Scoliosis Research Society-22r (SRS-22r) scores. OVERVIEW OF LITERATURE: Few studies have looked into the differences between Patients' and parents’ perceptions of their appearance. METHODS: AIS patient–parent pairs (n=170) were recruited. The Patients' and parents’ perceptions of six PAs were evaluated: waist asymmetry (WA), rib hump (RH), shoulder asymmetry (SA), neck tilt, breast asymmetry (BrA), and chest prominence. These PAs were ranked, and an aggregate PA (Agg-PA) score was derived from a score assigned to the attribute (6 for the most important PA and 1 for the least important). The patients also completed the SRS-22r questionnaire. RESULTS: Ninety-nine patients (58.2%) and 71 patients (41.8%) had thoracic and lumbar major curves, respectively. WA was ranked first by 54 patients (31.8%) and 50 parents (29.4%), whereas RH was ranked first by 50 patients (29.4%) and 38 parents (22.4%). The overall Agg-PA scores were similar for patients and parents (p>0.05). However, for thoracic major curves (TMCs) >40°, a significant difference was noted between the Agg-PA scores of patients and parents for SA (3.5±1.6 vs. 4.2±1.6, p=0.041) and BrA (3.0±1.6 vs. 2.2±1.3, p=0.006). For TMCs <40°, a significant difference was found between the Agg-PA scores of patients and parents for WA (3.7±1.6 vs. 4.4±1.5, p=0.050). BrA was negatively correlated with total SRS-22r score. CONCLUSIONS: There were no significant differences between patients and parents in their ranking of the most important PAs. For TMCs >40°, there were significant differences in the Agg-PA for SA and BrA. Pa¬tients were more concerned about BrA and parents were more concerned about SA. Patients' perception of the six PAs had weak correlation with SRS-22r scores.
Adolescent
;
Awards and Prizes
;
Body, Physical Appearance
;
Breast
;
Humans
;
Neck
;
Parents
;
Prospective Studies
;
Ribs
;
Scoliosis
;
Shoulder
;
Thorax
4.Feasibility of Single-Stage Posterior Passive Correction and Fusion Surgery for Congenital Scoliosis in Adolescent Patients Who Have Attained Skeletal Maturity
Chee Kidd CHIU ; Rommel Lim TAN ; Siti Mariam Abd GANI ; Jessamine Sze Lynn CHONG ; Weng Hong CHUNG ; Chris Yin Wei CHAN ; Mun Keong KWAN
Asian Spine Journal 2022;16(3):315-325
Methods:
Patients with congenital scoliosis who underwent SSPPCF using a pedicle screw system were reviewed. We identified the following three surgical indications: (1) hemivertebra or wedge vertebra over the thoracic or thoracolumbar region with structural lumbar curves, (2) hemivertebra or wedge vertebra at the lumbar region with significant pelvic obliquity or sacral slanting, and (3) mixed or complex congenital scoliosis. The demographic, perioperative, and radiographic data of these patients were collected.
Results:
Thirty-four patients were reviewed. The mean patient age was 14.6±3.4 years. There were 13 hemivertebrae, three wedged vertebrae, two butterfly vertebrae, three hemivertebrae with butterfly vertebra, eight unsegmented bars, and five multiple complex lesions. The average surgical duration was 219.4±68.8 minutes. The average blood loss was 1,208.4±763.5 mL. Seven patients required allogeneic blood transfusion. The mean hospital stay duration was 6.1±2.5 days. The complication rate was 11.8% (4/34): one patient had severe blood loss, one had rod breakage, and two had distal adding-on. The Cobb angle reduced from 65.9°±17.4° to 36.3°±15.3° (p<0.001) with a correction rate (CR) of 44.8%±17.4%. The regional kyphotic angle decreased from 39.9°±20.5° to 27.5°±13.9° (p=0.001) with a CR of 19.3%±49.6%. Radiographic parameters (radiographic shoulder height, clavicle angle, T1 tilt, cervical axis, pelvic obliquity, coronal balance, and apical vertebral translation) showed significant improvement postoperatively.
Conclusions
SSPPCF was a feasible option for adolescent patients with congenital scoliosis who were skeletally matured.
5.Neuropathic Pain after Adolescent Idiopathic Scoliosis Correction Surgery
Mohd Shahnaz HASAN ; Khean Jin GOH ; Hing Wa YIP ; Siti Mariam MOHAMAD ; Teik Seng CHAN ; Kok Ian CHONG ; Amber HASEEB ; Chee Kidd CHIU ; Chris Chan Yin WEI ; Mun Keong KWAN
Asian Spine Journal 2021;15(5):628-635
Methods:
Forty AIS patients were recruited. Demographic, preoperative, and postoperative data were recorded. The magnitude and characteristics of postoperative pain were assessed using the painDETECT questionnaire through telephone enquiries at intervals of 2, 6, 12, and 24 weeks. Statistical analyses were followed by Pearson correlation test to determine the relationship between pain scores at 6, 12, and 24 weeks with the risk factors.
Results:
Based on the painDETECT questionnaire, 90% of the patients had nociceptive pain, and 10% had a possible neuropathic pain component at 2 weeks postoperatively as per a mean painDETECT score of 7.1±4.5. Assessments at 6, 12, and 24 weeks showed that no patients had neuropathic pain with painDETECT scores of 4.4±3.2, 2.9±2.9, and 1.5±2.0, respectively. There was a significant correlation between total postoperative morphine use during 48 hours after the surgery and a tendency to develop neuropathic pain (p=0.022).
Conclusions
Chronic neuropathic pain was uncommon in AIS patients who had undergone PSF surgery. Higher opioid consumption will increase the possibility of developing chronic neuropathic pain.
7.THE CONFORMITY OF RADIOLOGICAL SHOULDER BALANCE PARAMETERS IN ADOLESCENT IDIOPATHIC SCOLIOSIS (AIS) PATIENTS AFTER CORRECTIVE SURGERY
CHEE KIDD CHIU ; CHRIS YIN WEI CHAN ; SAW HUAN GOH ; SHERWIN JOHAN NG ; PHENG HIAN TAN ; XUE HAN CHIAN ; YUN HUI NG ; XIN YI LER ; MUN KEONG KWAN
Malaysian Orthopaedic Journal 2018;12(Supplement B):5-
9.The anatomical locations of postoperative pain and their recovery trajectories following Posterior Spinal Fusion (PSF) surgery in Adolescent Idiopathic Scoliosis (AIS) patients
Chee Kidd Chiu ; Kok Ian Chong ; Teik Seng Chan ; Siti Mariam Mohamad ; Mohd Shahnaz Hasan ; Chris Yin Wei Chan ; Mun Keong Kwan
The Medical Journal of Malaysia 2020;75(1):12-17
Introduction: This study looked into the different anatomical
locations of pain and their trajectories within the first two
weeks after Posterior Spinal Fusion (PSF) surgery for
Adolescent Idiopathic Scoliosis (AIS).
Methods: We prospectively recruited patients with
Adolescent Idiopathic Scoliosis (AIS) scheduled for PSF
surgery. The anatomical locations of pain were divided into
four: (1) surgical wound pain; (2) shoulder pain; (3) neck
pain; and (4) low back pain. The anatomical locations of pain
were charted using the visual analogue pain score at
intervals of 12, 24, 36, 48 hours; and from day-3 to -14.
Patient-controlled analgesia (morphine), use of celecoxib
capsules, acetaminophen tablets and oxycodone
hydrochloride capsule consumption were recorded.
Results: A total of 40 patients were recruited. Patients
complained of surgical wound pain score of 6.2±2.1 after
surgery. This subsequently reduced to 4.2±2.0 by day-4, and
to 2.4±1.3 by day-7. Shoulder pain scores of symptomatic
patients peaked to 4.2±2.7 at 24 hours and 36 hours which
then reduced to 1.8±1.1 by day-8. Neck pain scores of
symptomatic patients reduced from 4.2±1.9 at 12 hours to
1.8±1.1 by day-4. Low back pain scores of symptomatic
patients reduced from 5.3±2.3 at 12 hours to 1.8±1.1 by day12.
Conclusions: Despite the presence of different anatomical
locations of pain after surgery, surgical wound was the most
significant pain and other anatomical locations of pain were
generally mild. Surgical wound pain reduced to a tolerable
level by day-4 when patients can then be comfortably
discharged. This finding provides useful information for
clinicians, patients and their caregivers.
10.FACTORS AFFECTING POSTOPERATIVE SHOULDER BALANCE IN LENKE 1 & 2 ADOLESCENT IDIOPATHIC SCOLIOSIS PATIENTS: A COLLABORATIVE STUDY BETWEEN TWO CENTERS IN MALAYSIA AND JAPAN
MUN KEONG KWAN ; CHEE KIDD CHIU ; PHENG HIAN TAN ; XUE HAN CHIAN ; XIN YI LER ; YUN HUI NG ; SHERWIN JOHAN NG ; SAW HUAN GOH ; YU YAMATO ; TOMOHIRO BANNO ; SHIN OE ; YUKIHIRO MATSUYAMA ; CHRIS YIN WEI CHAN
Malaysian Orthopaedic Journal 2018;12(Supplement B):4-