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IMF-076-03-0001-en	Why does a displaced intracapsular femoral-neck fracture risk avascular necrosis in adults?	The head is supplied mainly by retinacular branches of the medial circumflex femoral artery ascending along the neck, which such fractures injure, while the ligament of the head contributes little in adults.	Integrated Medical Foundations; chapter 76, TTS module 3; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 6df26ee6c1e7f9c70fbe14687c8c79f3d74184ed9bed65b7841aa0aefda24720; editorial review pending	imf lang::en chapter::076 module::076-03 review::pending
IMF-076-03-0002-en	How does the iliofemoral ligament allow upright standing with limited muscle activity?	It strongly resists hyperextension, and capsular fibres tighten in extension, so the upright hip is held largely by passive tension.	Integrated Medical Foundations; chapter 76, TTS module 3; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 6df26ee6c1e7f9c70fbe14687c8c79f3d74184ed9bed65b7841aa0aefda24720; editorial review pending	imf lang::en chapter::076 module::076-03 review::pending
IMF-076-03-0003-en	What mechanism typically causes posterior hip dislocation, and which nerve is at risk?	Force transmitted through a flexed hip drives the head posteriorly, where it can injure the sciatic nerve.	Integrated Medical Foundations; chapter 76, TTS module 3; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 6df26ee6c1e7f9c70fbe14687c8c79f3d74184ed9bed65b7841aa0aefda24720; editorial review pending	imf lang::en chapter::076 module::076-03 review::pending
IMF-076-03-0004-en	Why does superior gluteal nerve injury cause the pelvis to drop on the unsupported side during single-leg stance?	The nerve supplies gluteus medius and minimus, which abduct and stabilise the pelvis during single-leg stance, so without them the unsupported side drops.	Integrated Medical Foundations; chapter 76, TTS module 3; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 6df26ee6c1e7f9c70fbe14687c8c79f3d74184ed9bed65b7841aa0aefda24720; editorial review pending	imf lang::en chapter::076 module::076-03 review::pending
IMF-076-03-0005-en	How does the patella improve quadriceps function?	Enclosed in the quadriceps tendon, it increases the quadriceps moment arm and protects the anterior knee joint.	Integrated Medical Foundations; chapter 76, TTS module 3; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 6df26ee6c1e7f9c70fbe14687c8c79f3d74184ed9bed65b7841aa0aefda24720; editorial review pending	imf lang::en chapter::076 module::076-03 review::pending
IMF-076-03-0006-en	How are structures arranged in the femoral triangle, and why is the femoral canal a hernia site?	Lateral to medial lie femoral nerve, artery, vein and lymphatic space; the sheath excludes the nerve, and the canal medial to the vein permits venous expansion, leaving a space where hernia occurs.	Integrated Medical Foundations; chapter 76, TTS module 3; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 6df26ee6c1e7f9c70fbe14687c8c79f3d74184ed9bed65b7841aa0aefda24720; editorial review pending	imf lang::en chapter::076 module::076-03 review::pending
IMF-076-03-0007-en	How does the course of the saphenous nerve diverge from that of the femoral artery in the adductor canal?	Both run in the canal, but the artery passes through the adductor hiatus to become the popliteal artery while the saphenous nerve does not pass through the hiatus.	Integrated Medical Foundations; chapter 76, TTS module 3; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 6df26ee6c1e7f9c70fbe14687c8c79f3d74184ed9bed65b7841aa0aefda24720; editorial review pending	imf lang::en chapter::076 module::076-03 review::pending
IMF-076-03-0008-en	How is the knee locked in terminal extension and then unlocked?	Relative rotation locks the knee in terminal extension, increasing stability, and popliteus unlocks it at the onset of flexion.	Integrated Medical Foundations; chapter 76, TTS module 3; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 6df26ee6c1e7f9c70fbe14687c8c79f3d74184ed9bed65b7841aa0aefda24720; editorial review pending	imf lang::en chapter::076 module::076-03 review::pending
IMF-076-03-0009-en	Why must vascular injury be considered even when a knee dislocation has reduced spontaneously?	The popliteal artery lies deepest in the popliteal fossa, and dislocation can leave major vascular injury despite spontaneous reduction.	Integrated Medical Foundations; chapter 76, TTS module 3; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 6df26ee6c1e7f9c70fbe14687c8c79f3d74184ed9bed65b7841aa0aefda24720; editorial review pending	imf lang::en chapter::076 module::076-03 review::pending
IMF-076-03-0010-en	Why does compression of the common fibular nerve at the fibular neck cause foot drop?	Winding around the fibular neck, it supplies the anterior dorsiflexors and lateral evertors through its deep and superficial branches, so compression weakens dorsiflexion and eversion.	Integrated Medical Foundations; chapter 76, TTS module 3; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 6df26ee6c1e7f9c70fbe14687c8c79f3d74184ed9bed65b7841aa0aefda24720; editorial review pending	imf lang::en chapter::076 module::076-03 review::pending
IMF-076-03-0011-en	What passes behind the medial malleolus beneath the flexor retinaculum, and what does compression there cause?	In order, tibialis posterior, flexor digitorum longus, posterior tibial vessels, tibial nerve and flexor hallucis longus; tibial-nerve compression there produces tarsal-tunnel symptoms.	Integrated Medical Foundations; chapter 76, TTS module 3; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 6df26ee6c1e7f9c70fbe14687c8c79f3d74184ed9bed65b7841aa0aefda24720; editorial review pending	imf lang::en chapter::076 module::076-03 review::pending
IMF-076-03-0012-en	Why is the ankle mortise most stable in dorsiflexion?	The anterior part of the talar trochlea is wider, and in dorsiflexion it engages the mortise formed by the distal tibia and fibula.	Integrated Medical Foundations; chapter 76, TTS module 3; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 6df26ee6c1e7f9c70fbe14687c8c79f3d74184ed9bed65b7841aa0aefda24720; editorial review pending	imf lang::en chapter::076 module::076-03 review::pending
IMF-076-03-0013-en	Why does compression of the lateral femoral cutaneous nerve cause meralgia paraesthetica without motor weakness?	The nerve is cutaneous, passing from the lumbar plexus across iliacus toward the inguinal ligament, so compression produces sensory symptoms only.	Integrated Medical Foundations; chapter 76, TTS module 3; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 6df26ee6c1e7f9c70fbe14687c8c79f3d74184ed9bed65b7841aa0aefda24720; editorial review pending	imf lang::en chapter::076 module::076-03 review::pending
IMF-076-03-0014-en	How do hip abductors, quadriceps, plantarflexors and dorsiflexors each contribute to the gait cycle?	Abductors stabilise the pelvis in stance, quadriceps control knee flexion after contact, plantarflexors restrain tibial progression and generate push-off, and dorsiflexors control foot lowering and clear the toes.	Integrated Medical Foundations; chapter 76, TTS module 3; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: 6df26ee6c1e7f9c70fbe14687c8c79f3d74184ed9bed65b7841aa0aefda24720; editorial review pending	imf lang::en chapter::076 module::076-03 review::pending