The Hip - book

Compartment Syndrome Pressure Monitoring

– Discussion:     – many surgeon use 30 mm Hg as the cut off for performing fasciotomy;     – diastolic pressure: (Whiteside’ Theory):             – development of a compartment syndrome depends not only on intra-compartment pressure but also depends on systemic blood pressure;             – DBP – CP should be greater than 30                    – references:                            – Diastolic … Read more

Compartment Syndrome

 – Discussion:     – pathophysiology:      – compartment syndrome is elevation of interstitial pressure in closed fascial compartment that results in microvascular compromise;     – as duration & magnitude of interstitial pressure increase, myoneural function is impaired & necrosis of soft tissues eventually develops;     – intracompartmental pressure:         … Read more

Collar: in THR

(See also: Total Hip Replacement Menu) Discussion stress transfer to femur is desirable because it provides physiologic stimulus for maintaining bone mass & preventing disuse osteoporosis; if prosthesis has a collar that is seated on the cut surface of the neck or if there is a layer of cement in contact with the bone and undersurface of the … Read more

Colles’ Fracture

– See:  Distal Radius Frx Menu / Intra-Articular Fractures of the Distal Radius – General Discussion:     – frx was described by Abraham Colles in 1814, originally described as low energy extra articular frx of distal radius occuring in elderly individuals; – frx is typically dorsally displaced and angulated; – mechanism: – fracture is also caused by … Read more

Collagen

– See:       – Disorders       – Ligament Healing Characteristics: – Discussion:     – collagen is the primary structural protein of the body & occurs in bone, tendon, and scar tissue as well as in cartilage;     – at least nineteen distinct gene products have been identified in humans, … Read more

Clubfoot: Posteromedial Release – Greenville Method

                                                           assistance provided by:  B.L. Allen M.D.                                                                          R. Feurgeson M.D.                                                                           J.R. Davids M.D.            – See:         – Medial Release       – Posterior Release – Discussion:     – one-stage soft-tissue posteromedial release;     – as a prerequisite, the forefoot adductus deformity should be passively correctable to neutral, in order to avoid wound healing problems  … Read more

Clunk Test

– See:       – Pivot shift       – Anterior Cruciate Ligament       – Anterolateral Rotatory Instability       – Clunk Test       – Diagram       – Lachman       – Losee Test       – reverse pivot shift Test – Discussion:   … Read more