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Osteoarthritis Case Summary

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Patient history
Summary
Patient is a 65-year-old, housewife, presented to Prince of Wales Hospital (POWH) for an elective right total knee replacement (TKR) on the background of osteoarthritis in the right knee, exertive right knee pain of 3 years associated with knee stiffness. Notable patient’s medical history are Type II Diabetes Mellitus (insulin treated), proliferative diabetic retinopathy with macular oedema, microalbuminuria, hypertension and hyperlipidaemia. Patient’s parents both had diabetes. Initial examination presented with reduced range of motion and a fixed flexion deformity.

Presenting Complaint

Patient has come into POWH for an elective TKR of the right knee after an initial diagnosis of osteoarthritis of the right knee …show more content…
She also has microalbuminuria associated with her hypertension and diabetes is indicative of kidney disease and is to be monitored, also hyperlipidaemia. Hypertension is currently treated with Atacand and amlodipine, while her hyperlipidaemia is being treated with atorvastatin. No history of trauma or surgery.

Medications: Insulin Aspart (Novorapid) 4 units with breakfast, 5 units with lunch, 5 units with dinner; Insulin glargine (Lantus) 10 units at night; Atacand 32 mg daily; Diabex XR 2g daily; amlodipine 5mg daily; atorvastatin 20mg daily. Patient reported no side-effects from …show more content…
Biochemistry: Upon admission FBC, EUC, LFTs and platelet studies were within normal levels. Post-op day 1 and 2, patient developed mild normocytic anemia (Hb 80, HCT 0.245, MCV 89.4), neutrophilia (WCC 13.64, neutrophils 11), low EUC (Sodium 131, Chloride 93) and low magnesium levels (0.64). These levels improved steadily over her stay. However, patient’s HBA1C was 8.3% indicative of poor diabetic control.

Imaging
Patient was admitted from a previously diagnosed osteoarthritis in 2013, diagnosed from an x-ray showing joint space narrowing, osteophytes and increased density of subchondral bone of the right knee. These findings are consistent with developing osteoarthritis.

Surgery Summary
Operation Performed: Right Total Knee Replacement.

Patient was anesthetized (spinal and general) and standard prophylactic measures were made (IVABx, SCDS, TXA). The right knee is clearly labelled and patient is prepped in the supine position with her right leg hyper flexed to a fixed position with tape, no tourniquet was used. 20 degree FFD (fixed flexion deformity) was corrected. Surgeons took the midline approach on the right knee (incision); cuts, verification and trialing performed with computer navigation. After the insertion of prosthetics, the definitive components are cemented with Palacos and the wound is closed. Patient’s foot perfused with

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